Scippy

SCIP

Solving Constraint Integer Programs

reader_gms.c
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1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2 /* */
3 /* This file is part of the program and library */
4 /* SCIP --- Solving Constraint Integer Programs */
5 /* */
6 /* Copyright (C) 2002-2020 Konrad-Zuse-Zentrum */
7 /* fuer Informationstechnik Berlin */
8 /* */
9 /* SCIP is distributed under the terms of the ZIB Academic License. */
10 /* */
11 /* You should have received a copy of the ZIB Academic License */
12 /* along with SCIP; see the file COPYING. If not visit scipopt.org. */
13 /* */
14 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
15 
16 /**@file reader_gms.c
17  * @ingroup DEFPLUGINS_READER
18  * @brief GAMS file writer
19  * @author Ambros Gleixner
20  * @author Stefan Vigerske
21  *
22  * @todo Check for words reserved for GAMS.
23  */
24 
25 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
26 
27 #include "blockmemshell/memory.h"
28 #include "nlpi/pub_expr.h"
29 #include "scip/cons_abspower.h"
30 #include "scip/cons_bivariate.h"
31 #include "scip/cons_indicator.h"
32 #include "scip/cons_knapsack.h"
33 #include "scip/cons_linear.h"
34 #include "scip/cons_logicor.h"
35 #include "scip/cons_nonlinear.h"
36 #include "scip/cons_quadratic.h"
37 #include "scip/cons_setppc.h"
38 #include "scip/cons_soc.h"
39 #include "scip/cons_sos1.h"
40 #include "scip/cons_sos2.h"
41 #include "scip/cons_varbound.h"
42 #include "scip/pub_cons.h"
43 #include "scip/pub_message.h"
44 #include "scip/pub_misc.h"
45 #include "scip/pub_nlp.h"
46 #include "scip/pub_reader.h"
47 #include "scip/pub_var.h"
48 #include "scip/reader_gms.h"
49 #include "scip/scip_cons.h"
50 #include "scip/scip_general.h"
51 #include "scip/scip_mem.h"
52 #include "scip/scip_message.h"
53 #include "scip/scip_numerics.h"
54 #include "scip/scip_param.h"
55 #include "scip/scip_reader.h"
56 #include "scip/scip_var.h"
57 #include <string.h>
58 
59 #ifdef WITH_GAMS
60 #include <sys/stat.h>
61 
62 #include "gmomcc.h"
63 #include "gevmcc.h"
64 
65 #include "reader_gmo.h"
66 #endif
67 
68 
69 #define READER_NAME "gmsreader"
70 #ifdef WITH_GAMS
71 #define READER_DESC "file writer for MI(NL)(SOC)Ps in GAMS file format"
72 #else
73 #define READER_DESC "file reader and writer for MI(NL)(SOC)Ps in GAMS file format"
74 #endif
75 #define READER_EXTENSION "gms"
76 
77 
78 #define GMS_MAX_LINELEN 256
79 #define GMS_MAX_PRINTLEN 256 /**< the maximum length of any line is 255 + '\\0' = 256*/
80 #define GMS_MAX_NAMELEN 64 /**< the maximum length for any name is 63 + '\\0' = 64 */
81 #define GMS_PRINTLEN 100
82 #define GMS_DEFAULT_BIGM 1e+6
83 #define GMS_DEFAULT_INDICATORREFORM 's'
84 #define GMS_DEFAULT_SIGNPOWER FALSE
85 
86 /*
87  * Local methods (for writing)
88  */
89 
90 static const char badchars[] = "#*+/-@$[](){}";
91 
92 /** transforms given variables, scalars, and constant to the corresponding active variables, scalars, and constant */
93 static
94 SCIP_RETCODE getActiveVariables(
95  SCIP* scip, /**< SCIP data structure */
96  SCIP_VAR** vars, /**< vars array to get active variables for */
97  SCIP_Real* scalars, /**< scalars a_1, ..., a_n in linear sum a_1*x_1 + ... + a_n*x_n + c */
98  int* nvars, /**< pointer to number of variables and values in vars and vals array */
99  SCIP_Real* constant, /**< pointer to constant c in linear sum a_1*x_1 + ... + a_n*x_n + c */
100  SCIP_Bool transformed /**< transformed constraint? */
101  )
102 {
103  int requiredsize;
104  int v;
105 
106  assert( scip != NULL );
107  assert( vars != NULL );
108  assert( scalars != NULL );
109  assert( nvars != NULL );
110  assert( constant != NULL );
111 
112  if( transformed )
113  {
114  SCIP_CALL( SCIPgetProbvarLinearSum(scip, vars, scalars, nvars, *nvars, constant, &requiredsize, TRUE) );
115 
116  if( requiredsize > *nvars )
117  {
118  SCIP_CALL( SCIPreallocBufferArray(scip, &vars, requiredsize) );
119  SCIP_CALL( SCIPreallocBufferArray(scip, &scalars, requiredsize) );
120 
121  SCIP_CALL( SCIPgetProbvarLinearSum(scip, vars, scalars, nvars, requiredsize, constant, &requiredsize, TRUE) );
122  assert( requiredsize <= *nvars );
123  }
124  }
125  else
126  {
127  for( v = 0; v < *nvars; ++v )
128  {
129  SCIP_CALL( SCIPvarGetOrigvarSum(&vars[v], &scalars[v], constant) );
130  }
131  }
132  return SCIP_OKAY;
133 }
134 
135 /** clears the given line buffer */
136 static
137 void clearLine(
138  char* linebuffer, /**< line */
139  int* linecnt /**< number of characters in line */
140  )
141 {
142  assert( linebuffer != NULL );
143  assert( linecnt != NULL );
144 
145  (*linecnt) = 0;
146  linebuffer[0] = '\0';
147 }
148 
149 /** ends the given line with '\\0' and prints it to the given file stream */
150 static
151 void endLine(
152  SCIP* scip, /**< SCIP data structure */
153  FILE* file, /**< output file (or NULL for standard output) */
154  char* linebuffer, /**< line */
155  int* linecnt /**< number of characters in line */
156  )
157 {
158  assert( scip != NULL );
159  assert( linebuffer != NULL );
160  assert( linecnt != NULL );
161  assert( 0 <= *linecnt && *linecnt < GMS_MAX_LINELEN );
162 
163  if( (*linecnt) > 0 )
164  {
165  linebuffer[(*linecnt)] = '\0';
166  SCIPinfoMessage(scip, file, "%s\n", linebuffer);
167  clearLine(linebuffer, linecnt);
168  }
169 }
170 
171 /** appends extension to line and prints it to the give file stream if the
172  * line exceeded the length given in the define GMS_PRINTLEN */
173 static
174 void appendLine(
175  SCIP* scip, /**< SCIP data structure */
176  FILE* file, /**< output file (or NULL for standard output) */
177  char* linebuffer, /**< line */
178  int* linecnt, /**< number of characters in line */
179  const char* extension /**< string to extend the line */
180  )
181 {
182  size_t len;
183  assert( scip != NULL );
184  assert( linebuffer != NULL );
185  assert( linecnt != NULL );
186  assert( extension != NULL );
187  assert( strlen(linebuffer) + strlen(extension) < GMS_MAX_PRINTLEN );
188 
189  /* NOTE: avoid
190  * sprintf(linebuffer, "%s%s", linebuffer, extension);
191  * because of overlapping memory areas in memcpy used in sprintf.
192  */
193  len = strlen(linebuffer);
194  (void) strncat(linebuffer, extension, GMS_MAX_PRINTLEN - len);
195 
196  (*linecnt) += (int) strlen(extension);
197 
198  SCIPdebugMsg(scip, "linebuffer <%s>, length = %lu\n", linebuffer, (unsigned long)len);
199 
200  if( (*linecnt) > GMS_PRINTLEN )
201  endLine(scip, file, linebuffer, linecnt);
202 }
203 
204 /** appends extension to line and prints it to the give file stream if the
205  * line exceeded the length given in the define GMS_PRINTLEN
206  * indents the line by some spaces if it is a new line */
207 static
208 void appendLineWithIndent(
209  SCIP* scip, /**< SCIP data structure */
210  FILE* file, /**< output file (or NULL for standard output) */
211  char* linebuffer, /**< line */
212  int* linecnt, /**< number of characters in line */
213  const char* extension /**< string to extend the line */
214  )
215 {
216  if( *linecnt == 0 )
217  /* we start a new line; therefore we indent line */
218  appendLine(scip, file, linebuffer, linecnt, " ");
219 
220  appendLine(scip, file, linebuffer, linecnt, extension);
221 }
222 
223 /** checks string for occurences of bad symbols and replace those by '_' */
224 static
225 void conformName(
226  char* name /**< string to adjust */
227  )
228 {
229  const char* badchar;
230 
231  assert( name != NULL );
232 
233  for( badchar = badchars; *badchar; ++badchar )
234  {
235  char* c = strchr(name, *badchar);
236 
237  while( c != NULL )
238  {
239  assert( *c == *badchar );
240 
241  *c = '_';
242  c = strchr(c, *badchar);
243  }
244  }
245 }
246 
247 /* print first len-1 characters of name to string s and replace '#', '*', '+', '/', and '-' by '_' if necessary */
248 static
249 SCIP_RETCODE printConformName(
250  SCIP* scip, /**< SCIP data structure */
251  char* t, /**< target string */
252  int len, /**< length of t */
253  const char* name /**< source string or format string */
254  )
255 {
256  SCIP_Bool replaceforbiddenchars;
257 
258  assert( t != NULL );
259  assert( len > 0 );
260 
261  SCIP_CALL( SCIPgetBoolParam(scip, "reading/gmsreader/replaceforbiddenchars", &replaceforbiddenchars) );
262 
263  (void) SCIPsnprintf(t, len, "%s", name);
264 
265  if( replaceforbiddenchars )
266  conformName(t);
267 
268  return SCIP_OKAY;
269 }
270 
271 
272 /* retransform to active variables and print in GAMS format to file stream with surrounding bracket, pre- and suffix */
273 static
274 SCIP_RETCODE printActiveVariables(
275  SCIP* scip, /**< SCIP data structure */
276  FILE* file, /**< output file (or NULL for standard output) */
277  char* linebuffer, /**< line */
278  int* linecnt, /**< number of characters in line */
279  const char* prefix, /**< prefix (maybe NULL) */
280  const char* suffix, /**< suffix (maybe NULL) */
281  int nvars, /**< number of variables */
282  SCIP_VAR** vars, /**< array of variables */
283  SCIP_Real* vals, /**< array of values (or NULL if all ones) */
284  SCIP_Bool transformed /**< transformed constraint? */
285  )
286 {
287  int v;
288  int closingbracket;
289 
290  SCIP_VAR* var;
291  char varname[GMS_MAX_NAMELEN];
292  char buffer[GMS_MAX_PRINTLEN];
293  char ext[GMS_MAX_PRINTLEN];
294 
295  SCIP_VAR** activevars = NULL;
296  SCIP_Real* activevals = NULL;
297  int nactivevars;
298  SCIP_Real activeconstant = 0.0;
299 
300  assert( scip != NULL );
301  assert( vars != NULL || nvars == 0 );
302 
303  if( *linecnt == 0 )
304  /* we start a new line; therefore we tab this line */
305  appendLine(scip, file, linebuffer, linecnt, " ");
306 
307  if( nvars == 0 )
308  {
309  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s(0)%s", prefix != NULL ? prefix : "", suffix != NULL ? suffix : "");
310 
311  appendLine(scip, file, linebuffer, linecnt, buffer);
312  }
313  else
314  {
315  nactivevars = nvars;
316 
317  /* duplicate variable and value array */
318  SCIP_CALL( SCIPduplicateBufferArray(scip, &activevars, vars, nactivevars) );
319  if( vals != NULL )
320  {
321  SCIP_CALL( SCIPduplicateBufferArray(scip, &activevals, vals, nactivevars) );
322  }
323  else
324  {
325  SCIP_CALL( SCIPallocBufferArray(scip, &activevals, nactivevars) );
326 
327  for( v = 0; v < nactivevars; ++v )
328  activevals[v] = 1.0;
329  }
330 
331  /* retransform given variables to active variables */
332  SCIP_CALL( getActiveVariables(scip, activevars, activevals, &nactivevars, &activeconstant, transformed) );
333 
334  assert( nactivevars == 0 || activevals != NULL );
335 
336  if( nactivevars == 0 && SCIPisZero(scip, activeconstant) )
337  {
338  if( *linecnt == 0 )
339  /* we start a new line; therefore we tab this line */
340  appendLine(scip, file, linebuffer, linecnt, " ");
341 
342  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s(0)%s", prefix != NULL ? prefix : "", suffix != NULL ? suffix : "");
343 
344  appendLine(scip, file, linebuffer, linecnt, buffer);
345  }
346  else
347  {
348  /* buffer prefix */
349  (void) SCIPsnprintf(ext, GMS_MAX_PRINTLEN, "%s(", prefix != NULL ? prefix : "");
350 
351  /* find position of closing bracket */
352  closingbracket = nactivevars;
353  if( SCIPisZero(scip, activeconstant) )
354  {
355  do
356  --closingbracket;
357  while( SCIPisZero(scip, activevals[closingbracket]) && closingbracket > 0 );
358  }
359 
360  /* print active variables */
361  for( v = 0; v < nactivevars; ++v )
362  {
363  var = activevars[v];
364  assert( var != NULL );
365 
366  if( !SCIPisZero(scip, activevals[v]) )
367  {
368  if( *linecnt == 0 )
369  /* we start a new line; therefore we tab this line */
370  appendLine(scip, file, linebuffer, linecnt, " ");
371 
372  SCIP_CALL( printConformName(scip, varname, GMS_MAX_NAMELEN, SCIPvarGetName(var)) );
373 
374  if( SCIPisEQ(scip, activevals[v], 1.0) )
375  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s%s%s%s%s", ext, strchr(ext, '(') == NULL ? "+" : "",
376  varname, (v == closingbracket) ? ")" : "", (v == closingbracket && suffix) ? suffix : "");
377  else if( SCIPisEQ(scip, activevals[v], -1.0) )
378  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s-%s%s%s", ext,
379  varname, (v == closingbracket) ? ")" : "", (v == closingbracket && suffix) ? suffix : "");
380  else if( strchr(ext, '(') != NULL )
381  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s%.15g*%s%s%s", ext,
382  activevals[v], varname, (v == closingbracket) ? ")" : "", (v == closingbracket && suffix) ? suffix : "");
383  else
384  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s%+.15g*%s%s%s", ext,
385  activevals[v], varname, (v == closingbracket) ? ")" : "", (v == closingbracket && suffix) ? suffix : "");
386 
387  appendLine(scip, file, linebuffer, linecnt, buffer);
388 
389  (void) SCIPsnprintf(ext, GMS_MAX_PRINTLEN, (*linecnt == 0) ? "" : " ");
390  }
391  }
392 
393  /* print active constant */
394  if( !SCIPisZero(scip, activeconstant) )
395  {
396  if( *linecnt == 0 )
397  /* we start a new line; therefore we tab this line */
398  appendLine(scip, file, linebuffer, linecnt, " ");
399 
400  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s%+.15g)%s", ext, activeconstant, suffix ? suffix : "");
401 
402  appendLine(scip, file, linebuffer, linecnt, buffer);
403  }
404  /* nothing has been printed, yet */
405  else if( strchr(ext, '(') != NULL )
406  {
407  if( *linecnt == 0 )
408  /* we start a new line; therefore we tab this line */
409  appendLine(scip, file, linebuffer, linecnt, " ");
410 
411  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s(0)%s", prefix ? prefix : "", suffix ? suffix : "");
412 
413  appendLine(scip, file, linebuffer, linecnt, buffer);
414  }
415  }
416 
417  /* free buffer arrays */
418  SCIPfreeBufferArray(scip, &activevars);
419  SCIPfreeBufferArray(scip, &activevals);
420  }
421 
422  return SCIP_OKAY;
423 }
424 
425 
426 /* print linear row in GAMS format to file stream (without retransformation to active variables) */
427 static
428 SCIP_RETCODE printLinearRow(
429  SCIP* scip, /**< SCIP data structure */
430  FILE* file, /**< output file (or NULL for standard output) */
431  const char* rowname, /**< row name */
432  const char* rownameextension, /**< row name extension */
433  const char* type, /**< row type ("=e=", "=l=", or "=g=") */
434  int nvars, /**< number of variables */
435  SCIP_VAR** vars, /**< array of variables */
436  SCIP_Real* vals, /**< array of values */
437  SCIP_Real rhs /**< right hand side */
438  )
439 {
440  int v;
441  char linebuffer[GMS_MAX_PRINTLEN+1] = { '\0' };
442  int linecnt;
443 
444  SCIP_VAR* var;
445  char varname[GMS_MAX_NAMELEN];
446  char consname[GMS_MAX_NAMELEN + 3]; /* four extra characters for ' ..' */
447  char buffer[GMS_MAX_PRINTLEN];
448 
449  assert( scip != NULL );
450  assert( strcmp(type, "=e=") == 0 || strcmp(type, "=l=") == 0 || strcmp(type, "=g=") == 0);
451  assert( nvars == 0 || (vars != NULL && vals != NULL) );
452 
453  clearLine(linebuffer, &linecnt);
454 
455  /* start each line with a space */
456  appendLine(scip, file, linebuffer, &linecnt, " ");
457 
458  /* print row name */
459  if( strlen(rowname) > 0 || strlen(rownameextension) > 0 )
460  {
461  (void) SCIPsnprintf(buffer, GMS_MAX_NAMELEN + 3, "%s%s ..", rowname, rownameextension);
462  SCIP_CALL( printConformName(scip, consname, GMS_MAX_NAMELEN + 3, buffer) );
463  appendLine(scip, file, linebuffer, &linecnt, consname);
464  }
465 
466  /* print coefficients */
467  if( nvars == 0 )
468  {
469  /* we start a new line; therefore we tab this line */
470  if( linecnt == 0 )
471  appendLine(scip, file, linebuffer, &linecnt, " ");
472 
473  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " 0");
474 
475  appendLine(scip, file, linebuffer, &linecnt, buffer);
476  }
477 
478  for( v = 0; v < nvars; ++v )
479  {
480  assert(vars != NULL); /* for lint */
481  assert(vals != NULL);
482 
483  var = vars[v];
484  assert( var != NULL );
485 
486  /* we start a new line; therefore we tab this line */
487  if( linecnt == 0 )
488  appendLine(scip, file, linebuffer, &linecnt, " ");
489 
490  SCIP_CALL( printConformName(scip, varname, GMS_MAX_NAMELEN, SCIPvarGetName(var)) );
491  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %+.15g*%s", vals[v], varname);
492 
493  appendLine(scip, file, linebuffer, &linecnt, buffer);
494  }
495 
496  /* print right hand side */
497  if( SCIPisZero(scip, rhs) )
498  rhs = 0.0;
499 
500  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %s %.15g;", type, rhs);
501 
502  /* we start a new line; therefore we tab this line */
503  if( linecnt == 0 )
504  appendLine(scip, file, linebuffer, &linecnt, " ");
505  appendLine(scip, file, linebuffer, &linecnt, buffer);
506 
507  endLine(scip, file, linebuffer, &linecnt);
508 
509  return SCIP_OKAY;
510 }
511 
512 
513 /** prints given linear constraint information in GAMS format to file stream */
514 static
515 SCIP_RETCODE printLinearCons(
516  SCIP* scip, /**< SCIP data structure */
517  FILE* file, /**< output file (or NULL for standard output) */
518  const char* rowname, /**< name of the row */
519  int nvars, /**< number of variables */
520  SCIP_VAR** vars, /**< array of variables */
521  SCIP_Real* vals, /**< array of coefficients values (or NULL if all coefficient values are 1) */
522  SCIP_Real lhs, /**< left hand side */
523  SCIP_Real rhs, /**< right hand side */
524  SCIP_Bool transformed /**< transformed constraint? */
525  )
526 {
527  int v;
528  SCIP_VAR** activevars = NULL;
529  SCIP_Real* activevals = NULL;
530  int nactivevars;
531  SCIP_Real activeconstant = 0.0;
532 
533  assert( scip != NULL );
534  assert( rowname != NULL );
535 
536  /* The GAMS format does not forbid that the variable array is empty */
537  assert( nvars == 0 || vars != NULL );
538 
539  assert( lhs <= rhs );
540 
541  if( SCIPisInfinity(scip, -lhs) && SCIPisInfinity(scip, rhs) )
542  return SCIP_OKAY;
543 
544  nactivevars = nvars;
545  if( nvars > 0 )
546  {
547  /* duplicate variable and value array */
548  SCIP_CALL( SCIPduplicateBufferArray(scip, &activevars, vars, nactivevars) );
549  if( vals != NULL )
550  {
551  SCIP_CALL( SCIPduplicateBufferArray(scip, &activevals, vals, nactivevars) );
552  }
553  else
554  {
555  SCIP_CALL( SCIPallocBufferArray(scip, &activevals, nactivevars) );
556 
557  for( v = 0; v < nactivevars; ++v )
558  activevals[v] = 1.0;
559  }
560 
561  /* retransform given variables to active variables */
562  SCIP_CALL( getActiveVariables(scip, activevars, activevals, &nactivevars, &activeconstant, transformed) );
563  }
564 
565  /* print row(s) in GAMS format */
566  if( SCIPisEQ(scip, lhs, rhs) )
567  {
568  assert( !SCIPisInfinity(scip, rhs) );
569 
570  /* print equality constraint */
571  SCIP_CALL( printLinearRow(scip, file, rowname, "", "=e=",
572  nactivevars, activevars, activevals, rhs - activeconstant) );
573  }
574  else
575  {
576  if( !SCIPisInfinity(scip, -lhs) )
577  {
578  /* print inequality ">=" */
579  SCIP_CALL( printLinearRow(scip, file, rowname, SCIPisInfinity(scip, rhs) ? "" : "_lhs", "=g=",
580  nactivevars, activevars, activevals, lhs - activeconstant) );
581  }
582  if( !SCIPisInfinity(scip, rhs) )
583  {
584  /* print inequality "<=" */
585  SCIP_CALL( printLinearRow(scip, file, rowname, SCIPisInfinity(scip, -lhs) ? "" : "_rhs", "=l=",
586  nactivevars, activevars, activevals, rhs - activeconstant) );
587  }
588  }
589 
590  if( nvars > 0 )
591  {
592  /* free buffer arrays */
593  SCIPfreeBufferArray(scip, &activevars);
594  SCIPfreeBufferArray(scip, &activevals);
595  }
596 
597  return SCIP_OKAY;
598 }
599 
600 
601 /* print quadratic row in GAMS format to file stream (performing retransformation to active variables) */
602 static
603 SCIP_RETCODE printQuadraticRow(
604  SCIP* scip, /**< SCIP data structure */
605  FILE* file, /**< output file (or NULL for standard output) */
606  const char* rowname, /**< row name */
607  const char* rownameextension, /**< row name extension */
608  const char* type, /**< row type ("=e=", "=l=", or "=g=") */
609  int nlinvars, /**< number of linear terms */
610  SCIP_VAR** linvars, /**< variables in linear part */
611  SCIP_Real* lincoeffs, /**< coefficients of variables in linear part */
612  int nquadvarterms, /**< number of quadratic variable terms */
613  SCIP_QUADVARTERM* quadvarterms, /**< quadratic variable terms */
614  int nbilinterms, /**< number of bilinear terms */
615  SCIP_BILINTERM* bilinterms, /**< bilinear terms */
616  SCIP_Real rhs, /**< right hand side */
617  SCIP_Bool transformed /**< transformed constraint? */
618  )
619 {
620  int t;
621  char linebuffer[GMS_MAX_PRINTLEN+1] = { '\0' };
622  int linecnt;
623 
624  SCIP_VAR* var;
625  char consname[GMS_MAX_NAMELEN + 3]; /* four extra characters for ' ..' */
626  char buffer[GMS_MAX_PRINTLEN];
627 
628  assert( scip != NULL );
629  assert( strlen(rowname) > 0 || strlen(rownameextension) > 0 );
630  assert( strcmp(type, "=e=") == 0 || strcmp(type, "=l=") == 0 || strcmp(type, "=g=") == 0 );
631  assert( nlinvars == 0 || (linvars != NULL && lincoeffs != NULL) );
632  assert( nquadvarterms == 0 || quadvarterms != NULL );
633  assert( nbilinterms == 0 || bilinterms != NULL );
634  assert( nquadvarterms > 0 || nbilinterms == 0 );
635 
636  clearLine(linebuffer, &linecnt);
637 
638  /* start each line with a space */
639  appendLine(scip, file, linebuffer, &linecnt, " ");
640 
641  /* print row name */
642  (void) SCIPsnprintf(buffer, GMS_MAX_NAMELEN + 3, "%s%s ..", rowname, rownameextension);
643  SCIP_CALL( printConformName(scip, consname, GMS_MAX_NAMELEN + 3, buffer) );
644 
645  appendLine(scip, file, linebuffer, &linecnt, consname);
646 
647  /* print linear terms */
648  if( nlinvars > 0 )
649  {
650  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "+", " ", nlinvars, linvars, lincoeffs, transformed) );
651  }
652 
653  /* print linear coefficients of quadratic terms */
654  for( t = 0; t < nquadvarterms; ++t )
655  {
656  var = quadvarterms[t].var;
657  assert( var != NULL );
658 
659  if( !SCIPisZero(scip, quadvarterms[t].lincoef) )
660  {
661  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%+.15g*", quadvarterms[t].lincoef);
662 
663  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, buffer, NULL, 1, &var, NULL, transformed) );
664  }
665  }
666 
667  /* print square coefficients of quadratic terms */
668  for( t = 0; t < nquadvarterms; ++t )
669  {
670  var = quadvarterms[t].var;
671  assert( var != NULL );
672 
673  if( !SCIPisZero(scip, quadvarterms[t].sqrcoef) )
674  {
675  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%+.15g*sqr", quadvarterms[t].sqrcoef);
676 
677  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, buffer, NULL, 1, &var, NULL, transformed) );
678  }
679  }
680 
681  /* print bilinear terms */
682  for( t = 0; t < nbilinterms; ++t )
683  {
684  if( !SCIPisZero(scip, bilinterms[t].coef) )
685  {
686  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%+.15g*", bilinterms[t].coef);
687 
688  /* print first variable (retransformed to active variables) */
689  var = bilinterms[t].var1;
690  assert( var != NULL );
691 
692  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, buffer, "", 1, &var, NULL, transformed) );
693 
694  /* print second variable (retransformed to active variables) */
695  var = bilinterms[t].var2;
696  assert( var != NULL );
697 
698  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "*", " ", 1, &var, NULL, transformed) );
699  }
700  }
701 
702  /* print right hand side */
703  if( linecnt == 0 )
704  /* we start a new line; therefore we tab this line */
705  appendLine(scip, file, linebuffer, &linecnt, " ");
706 
707  if( SCIPisZero(scip, rhs) )
708  rhs = 0.0;
709 
710  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s%s %.15g;", (nlinvars == 0 && nquadvarterms == 0) ? "0 " : "", type, rhs);
711 
712  appendLine(scip, file, linebuffer, &linecnt, buffer);
713 
714  endLine(scip, file, linebuffer, &linecnt);
715 
716  return SCIP_OKAY;
717 }
718 
719 
720 /** prints given quadratic constraint information in GAMS format to file stream */
721 static
722 SCIP_RETCODE printQuadraticCons(
723  SCIP* scip, /**< SCIP data structure */
724  FILE* file, /**< output file (or NULL for standard output) */
725  const char* rowname, /**< name of the row */
726  int nlinvars, /**< number of linear terms */
727  SCIP_VAR** linvars, /**< variables in linear part */
728  SCIP_Real* lincoeffs, /**< coefficients of variables in linear part */
729  int nquadvarterms, /**< number of quadratic variable terms */
730  SCIP_QUADVARTERM* quadvarterms, /**< quadratic variable terms */
731  int nbilinterms, /**< number of bilinear terms */
732  SCIP_BILINTERM* bilinterms, /**< bilinear terms */
733  SCIP_Real lhs, /**< left hand side */
734  SCIP_Real rhs, /**< right hand side */
735  SCIP_Bool transformed /**< transformed constraint? */
736  )
737 {
738  assert( scip != NULL );
739  assert( rowname != NULL );
740  assert( nlinvars == 0 || (linvars != NULL && lincoeffs != NULL) );
741  assert( nquadvarterms == 0 || quadvarterms != NULL );
742  assert( nbilinterms == 0 || bilinterms != NULL );
743  assert( nquadvarterms > 0 || nbilinterms == 0 );
744  assert( lhs <= rhs );
745 
746  if( SCIPisInfinity(scip, -lhs) && SCIPisInfinity(scip, rhs) )
747  return SCIP_OKAY;
748 
749  /* print row(s) in GAMS format */
750  if( SCIPisEQ(scip, lhs, rhs) )
751  {
752  assert( !SCIPisInfinity(scip, rhs) );
753 
754  /* print equality constraint */
755  SCIP_CALL( printQuadraticRow(scip, file, rowname, "", "=e=",
756  nlinvars, linvars, lincoeffs,
757  nquadvarterms, quadvarterms,
758  nbilinterms, bilinterms, rhs, transformed) );
759  }
760  else
761  {
762  if( !SCIPisInfinity(scip, -lhs) )
763  {
764  /* print inequality ">=" */
765  SCIP_CALL( printQuadraticRow(scip, file, rowname, SCIPisInfinity(scip, rhs) ? "" : "_lhs", "=g=",
766  nlinvars, linvars, lincoeffs,
767  nquadvarterms, quadvarterms,
768  nbilinterms, bilinterms, lhs, transformed) );
769  }
770  if( !SCIPisInfinity(scip, rhs) )
771  {
772  /* print inequality "<=" */
773  SCIP_CALL( printQuadraticRow(scip, file, rowname, SCIPisInfinity(scip, -lhs) ? "" : "_rhs", "=l=",
774  nlinvars, linvars, lincoeffs,
775  nquadvarterms, quadvarterms,
776  nbilinterms, bilinterms, rhs, transformed) );
777  }
778  }
779 
780  return SCIP_OKAY;
781 }
782 
783 /** check GAMS limitations on SOC constraints
784  * returns true of constraint can be written as conic equation in GAMS (using equation type =C=)
785  */
786 static
787 SCIP_Bool isGAMSprintableSOC(
788  int nlhsvars, /**< number of variables on left hand side */
789  SCIP_VAR** lhsvars, /**< variables on left hand side */
790  SCIP_Real* lhscoeffs, /**< coefficients of variables on left hand side, or NULL if == 1.0 */
791  SCIP_Real* lhsoffsets, /**< offsets of variables on left hand side, or NULL if == 0.0 */
792  SCIP_Real lhsconstant, /**< constant on left hand side */
793  SCIP_VAR* rhsvar, /**< variable on right hand side */
794  SCIP_Real rhscoef, /**< coefficient of variable on right hand side */
795  SCIP_Real rhsoffset /**< offset of variable on right hand side */
796  )
797 {
798  int i;
799 
800  assert(nlhsvars == 0 || lhsvars != NULL);
801 
802  if( rhscoef != 1.0 )
803  return FALSE;
804 
805  if( rhsoffset != 0.0 )
806  return FALSE;
807 
808  if( rhsvar == NULL )
809  return FALSE;
810 
811  if( !SCIPvarIsActive(rhsvar) )
812  return FALSE;
813 
814  if( lhsconstant != 0.0 )
815  return FALSE;
816 
817  if( nlhsvars < 2 )
818  return FALSE;
819 
820  for( i = 0; i < nlhsvars; ++i )
821  {
822  if( lhscoeffs [i] != 1.0 )
823  return FALSE;
824 
825  if( lhsoffsets[i] != 0.0 )
826  return FALSE;
827 
828  if( !SCIPvarIsActive(lhsvars[i]) )
829  return FALSE;
830  }
831 
832  return TRUE;
833 }
834 
835 /* print second order cone row in GAMS format to file stream (performing retransformation to active variables)
836  * The constraints are of the following form:
837  * \f[
838  * \left\{ x \;:\; \sqrt{\gamma + \sum_{i=1}^{n} (\alpha_i\, (x_i + \beta_i))^2} \leq \alpha_{n+1}\, (x_{n+1}+\beta_{n+1}) \right\}.
839  * \f]
840  * */
841 static
842 SCIP_RETCODE printSOCCons(
843  SCIP* scip, /**< SCIP data structure */
844  FILE* file, /**< output file (or NULL for standard output) */
845  const char* rowname, /**< row name */
846  int nlhsvars, /**< number of variables on left hand side */
847  SCIP_VAR** lhsvars, /**< variables on left hand side */
848  SCIP_Real* lhscoeffs, /**< coefficients of variables on left hand side, or NULL if == 1.0 */
849  SCIP_Real* lhsoffsets, /**< offsets of variables on left hand side, or NULL if == 0.0 */
850  SCIP_Real lhsconstant, /**< constant on left hand side */
851  SCIP_VAR* rhsvar, /**< variable on right hand side */
852  SCIP_Real rhscoef, /**< coefficient of variable on right hand side */
853  SCIP_Real rhsoffset, /**< offset of variable on right hand side */
854  SCIP_Bool transformed /**< transformed constraint? */
855  )
856 {
857  char linebuffer[GMS_MAX_PRINTLEN+1] = { '\0' };
858  int linecnt;
859 
860  char consname[GMS_MAX_NAMELEN + 3]; /* four extra characters for ' ..' */
861  char buffer[GMS_MAX_PRINTLEN];
862 
863  assert( scip != NULL );
864  assert( strlen(rowname) > 0 );
865  assert( nlhsvars == 0 || lhsvars != NULL );
866 
867  clearLine(linebuffer, &linecnt);
868 
869  /* start each line with a space */
870  appendLine(scip, file, linebuffer, &linecnt, " ");
871 
872  /* print row name */
873  (void) SCIPsnprintf(buffer, GMS_MAX_NAMELEN + 3, "%s ..", rowname);
874  SCIP_CALL( printConformName(scip, consname, GMS_MAX_NAMELEN + 3, buffer) );
875 
876  appendLine(scip, file, linebuffer, &linecnt, consname);
877 
878  if( !isGAMSprintableSOC(nlhsvars, lhsvars, lhscoeffs, lhsoffsets, lhsconstant, rhsvar, rhscoef, rhsoffset) )
879  {
880  int t;
881 
882  /* print right-hand side on left */
883  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "sqr(%.15g +", rhsoffset);
884 
885  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, buffer, ")", 1, &rhsvar, &rhscoef, transformed) );
886 
887  appendLine(scip, file, linebuffer, &linecnt, " =g= ");
888 
889  /* print left-hand side on right */
890 
891  if( lhsconstant != 0.0 )
892  {
893  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%.15g", lhsconstant);
894 
895  appendLine(scip, file, linebuffer, &linecnt, buffer);
896  }
897 
898  for( t = 0; t < nlhsvars; ++t )
899  {
900  assert( lhsvars[t] != NULL );
901 
902  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "+ sqr(%.15g * (%.15g + ", lhscoeffs ? lhscoeffs[t] : 1.0, lhsoffsets ? lhsoffsets[t] : 0.0);
903 
904  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, buffer, "))", 1, &lhsvars[t], NULL, transformed) );
905  }
906  }
907  else
908  {
909  /* print right-hand side on left */
910  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "+", " ", 1, &rhsvar, &rhscoef, transformed) );
911 
912  appendLine(scip, file, linebuffer, &linecnt, " =c= ");
913 
914  /* print left-hand side on right */
915  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "+", " ", nlhsvars, lhsvars, lhscoeffs, transformed) );
916  }
917 
918  appendLine(scip, file, linebuffer, &linecnt, ";");
919 
920  endLine(scip, file, linebuffer, &linecnt);
921 
922  return SCIP_OKAY;
923 }
924 
925 /* print indicator constraint in some GAMS format to file stream (performing retransformation to active variables)
926  * The constraints are of the following form:
927  * \f[
928  * z = 1 -> s = 0
929  * \f]
930  * */
931 static
932 SCIP_RETCODE printIndicatorCons(
933  SCIP* scip, /**< SCIP data structure */
934  FILE* file, /**< output file (or NULL for standard output) */
935  const char* rowname, /**< row name */
936  SCIP_VAR* z, /**< indicating variable (binary) */
937  SCIP_VAR* s, /**< slack variable */
938  SCIP_Bool* sossetdeclr, /**< buffer to store whether we declared the SOS set for indicator reform */
939  SCIP_Bool transformed /**< transformed constraint? */
940  )
941 {
942  char linebuffer[GMS_MAX_PRINTLEN+1] = { '\0' };
943  int linecnt;
944  SCIP_Real coef;
945  char indicatorform;
946 
947  char consname[GMS_MAX_NAMELEN + 30];
948  char buffer[GMS_MAX_PRINTLEN];
949 
950  assert( scip != NULL );
951  assert( strlen(rowname) > 0 );
952  assert( z != NULL );
953  assert( s != NULL );
954  assert( SCIPvarIsBinary(z) );
955  assert( sossetdeclr != NULL );
956 
957  clearLine(linebuffer, &linecnt);
958 
959  /* start each line with a space */
960  appendLine(scip, file, linebuffer, &linecnt, " ");
961 
962  SCIP_CALL( SCIPgetCharParam(scip, "reading/gmsreader/indicatorreform", &indicatorform) );
963 
964  switch( indicatorform )
965  {
966  case 'b':
967  {
968  /* print row name */
969  (void) SCIPsnprintf(buffer, GMS_MAX_NAMELEN + 3, "%s ..", rowname);
970  SCIP_CALL( printConformName(scip, consname, GMS_MAX_NAMELEN + 3, buffer) );
971 
972  appendLine(scip, file, linebuffer, &linecnt, consname);
973 
974  /* write as s <= upperbound(s)*(1-z) or s <= upperbound(s) * negation(z) */
975  coef = 1.0;
976  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, NULL, " =l= ", 1, &s, &coef, transformed) );
977 
978  coef = SCIPvarGetUbGlobal(s);
979  if( SCIPisInfinity(scip, coef) )
980  {
981  SCIP_CALL( SCIPgetRealParam(scip, "reading/gmsreader/bigmdefault", &coef) );
982 
983  SCIPwarningMessage(scip, "do not have upper bound on slack variable <%s> in indicator constraint <%s>, will use M = %g.\n",
984  SCIPvarGetName(s), rowname, coef);
985  }
986 
987  if( SCIPvarIsNegated(z) )
988  {
989  SCIP_CALL( SCIPgetNegatedVar(scip, z, &z) );
990  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "", ";", 1, &z, &coef, transformed) );
991  }
992  else
993  {
994  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%.15g + ", coef);
995 
996  coef = -coef;
997  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, buffer, ";", 1, &z, &coef, transformed) );
998  }
999 
1000  break;
1001  }
1002 
1003  case 's':
1004  {
1005  /* write as
1006  * sos1 Variable name_sos(sosset);
1007  * name_soseq(sosset).. name_sos(sosset) =e= s$(sameas(sosset,'slack') + z$(sameas(sosset,'bin'));
1008  */
1009  coef = 1.0;
1010  SCIP_CALL( printConformName(scip, consname, GMS_MAX_NAMELEN, rowname) );
1011 
1012  /* declare set for SOS1 declarations from reformulation of indicator, if needed */
1013  if( !*sossetdeclr )
1014  {
1015  SCIPinfoMessage(scip, file, " Set sosset / slack, bin /;\n");
1016  *sossetdeclr = TRUE;
1017  }
1018 
1019  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "sos1 Variable %s_sos(sosset);", consname);
1020  appendLine(scip, file, linebuffer, &linecnt, buffer);
1021  endLine(scip, file, linebuffer, &linecnt);
1022 
1023  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %s(sosset).. %s_sos(sosset) =e= ", consname, consname);
1024  appendLine(scip, file, linebuffer, &linecnt, buffer);
1025  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, NULL, "$sameas(sosset,'slack')", 1, &s, &coef, transformed) );
1026  if( SCIPvarIsNegated(z) )
1027  {
1028  SCIP_CALL( SCIPgetNegatedVar(scip, z, &z) );
1029  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, " + (1-(", "))$sameas(sosset,'bin');", 1, &z, &coef, transformed) );
1030  }
1031  else
1032  {
1033  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, " + ", "$sameas(sosset,'bin');", 1, &z, &coef, transformed) );
1034  }
1035  endLine(scip, file, linebuffer, &linecnt);
1036 
1037  break;
1038  }
1039 
1040  default:
1041  SCIPerrorMessage("wrong value '%c' for parameter reading/gmsreader/indicatorreform\n", indicatorform);
1042  return SCIP_ERROR;
1043  }
1044 
1045  endLine(scip, file, linebuffer, &linecnt);
1046 
1047  return SCIP_OKAY;
1048 }
1049 
1050 /* print SOS constraint in some GAMS format to file stream (performing retransformation to active variables)
1051  *
1052  * write as
1053  * Set name_sosset /1*nvars/;
1054  * SOS1/2 Variable name_sosvar(name_sosset); name_sosvar.lo(name_sosset) = -inf;
1055  * Equation name_sosequ(e1_sosset);
1056  * name_sosequ(name_sosset).. name_sosvar(e1_sosset) =e=
1057  * vars[0]$sameas(name_sosset, '1') + vars[1]$sameas(name_sosset, '2') + ... + vars[nvars-1]$sameas(name_sosset, nvars);
1058  */
1059 static
1060 SCIP_RETCODE printSOSCons(
1061  SCIP* scip, /**< SCIP data structure */
1062  FILE* file, /**< output file (or NULL for standard output) */
1063  const char* rowname, /**< row name */
1064  int nvars, /**< number of variables in SOS */
1065  SCIP_VAR** vars, /**< variables in SOS */
1066  int sostype, /**< type of SOS: 1 or 2 */
1067  SCIP_Bool transformed /**< transformed constraint? */
1068  )
1069 {
1070  char linebuffer[GMS_MAX_PRINTLEN+1] = { '\0' };
1071  int linecnt;
1072  SCIP_Real coef;
1073  int v;
1074 
1075  char consname[GMS_MAX_NAMELEN + 30];
1076  char buffer[GMS_MAX_PRINTLEN];
1077 
1078  assert( scip != NULL );
1079  assert( strlen(rowname) > 0 );
1080  assert( vars != NULL || nvars == 0 );
1081  assert( sostype == 1 || sostype == 2 );
1082 
1083  clearLine(linebuffer, &linecnt);
1084 
1085  /* start each line with a space */
1086  appendLine(scip, file, linebuffer, &linecnt, " ");
1087 
1088  SCIP_CALL( printConformName(scip, consname, GMS_MAX_NAMELEN, rowname) );
1089 
1090  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "Set %s_sosset /1*%d/;", consname, nvars);
1091  appendLine(scip, file, linebuffer, &linecnt, buffer);
1092  endLine(scip, file, linebuffer, &linecnt);
1093 
1094  /* explicitly set lower bound of SOS variables to -inf, as GAMS default is 0.0 */
1095  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " SOS%d Variable %s_sosvar(%s_sosset); %s_sosvar.lo(%s_sosset) = -inf;", sostype, consname, consname, consname, consname);
1096  appendLine(scip, file, linebuffer, &linecnt, buffer);
1097  endLine(scip, file, linebuffer, &linecnt);
1098 
1099  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %s(%s_sosset).. %s_sosvar(%s_sosset) =e= ", consname, consname, consname, consname);
1100  appendLine(scip, file, linebuffer, &linecnt, buffer);
1101  endLine(scip, file, linebuffer, &linecnt);
1102 
1103  coef = 1.0;
1104  for( v = 0; v < nvars; ++v )
1105  {
1106  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "$sameas(%s_sosset,'%d')", consname, v+1);
1107  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, v > 0 ? " + " : NULL, buffer, 1, &vars[v], &coef, transformed) ); /*lint !e613*/
1108  }
1109  appendLine(scip, file, linebuffer, &linecnt, ";");
1110  endLine(scip, file, linebuffer, &linecnt);
1111 
1112  return SCIP_OKAY;
1113 }
1114 
1115 /* print signpower row in GAMS format to file stream (performing retransformation to active variables) */
1116 static
1117 SCIP_RETCODE printSignpowerRow(
1118  SCIP* scip, /**< SCIP data structure */
1119  FILE* file, /**< output file (or NULL for standard output) */
1120  const char* rowname, /**< row name */
1121  const char* rownameextension, /**< row name extension */
1122  const char* type, /**< row type ("=e=", "=l=", or "=g=") */
1123  SCIP_VAR* nonlinvar, /**< nonlinear variable */
1124  SCIP_VAR* linvar, /**< linear variable, may be NULL */
1125  SCIP_Real exponent, /**< exponent of nonlinear variable */
1126  SCIP_Real offset, /**< offset of nonlinear variable */
1127  SCIP_Real coeflinear, /**< coefficient of linear variable */
1128  SCIP_Real rhs, /**< right hand side */
1129  SCIP_Bool transformed, /**< transformed constraint? */
1130  SCIP_Bool signpowerallowed, /**< allowed to use signpower operator in GAMS? */
1131  SCIP_Bool* nsmooth /**< buffer to store whether we printed a nonsmooth function */
1132  )
1133 {
1134  char linebuffer[GMS_MAX_PRINTLEN+1] = { '\0' };
1135  int linecnt;
1136  SCIP_Bool nisoddint;
1137  SCIP_Bool fixedsign;
1138 
1139  char consname[GMS_MAX_NAMELEN + 3]; /* four extra characters for ' ..' */
1140  char buffer[GMS_MAX_PRINTLEN];
1141 
1142  assert( scip != NULL );
1143  assert( strlen(rowname) > 0 || strlen(rownameextension) > 0 );
1144  assert( strcmp(type, "=e=") == 0 || strcmp(type, "=l=") == 0 || strcmp(type, "=g=") == 0 );
1145  assert( nonlinvar != NULL );
1146  assert( exponent > 1.0 );
1147  assert( nsmooth != NULL );
1148 
1149  clearLine(linebuffer, &linecnt);
1150 
1151  /* start each line with a space */
1152  appendLine(scip, file, linebuffer, &linecnt, " ");
1153 
1154  /* print row name */
1155  (void) SCIPsnprintf(buffer, GMS_MAX_NAMELEN + 3, "%s%s ..", rowname, rownameextension);
1156  SCIP_CALL( printConformName(scip, consname, GMS_MAX_NAMELEN + 3, buffer) );
1157 
1158  appendLine(scip, file, linebuffer, &linecnt, consname);
1159 
1160  /* print nonlinear term
1161  * if not signpowerallowed, then signpow(x,n) is printed as x*abs(x) if n == 2, x*(abs(x)**(n-1)) if n is not 2 and not an odd integer, and as power(x,n) if n is an odd integer
1162  * if signpowerallowed, then signpow(x,n) is printed as power(x,n) if n is an odd integer and as signpower(x,n) otherwiser
1163  */
1164  nisoddint = SCIPisIntegral(scip, exponent) && ((int)SCIPfloor(scip, exponent+0.5))%2 == 1;
1165  fixedsign = !SCIPisNegative(scip, SCIPvarGetLbGlobal(nonlinvar)) || !SCIPisPositive(scip, SCIPvarGetUbGlobal(nonlinvar));
1166  if( !nisoddint && !fixedsign )
1167  {
1168  if( signpowerallowed )
1169  {
1170  if( offset != 0.0 )
1171  {
1172  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "signpower(%g ", offset);
1173  appendLine(scip, file, linebuffer, &linecnt, buffer);
1174  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "+", ",", 1, &nonlinvar, NULL, transformed) );
1175  }
1176  else
1177  {
1178  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "signpower(", ",", 1, &nonlinvar, NULL, transformed) );
1179  }
1180  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%g)", exponent);
1181  appendLine(scip, file, linebuffer, &linecnt, buffer);
1182  }
1183  else
1184  {
1185  if( offset != 0.0 )
1186  {
1187  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "(%g ", offset);
1188  appendLine(scip, file, linebuffer, &linecnt, buffer);
1189  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "+", ") * ", 1, &nonlinvar, NULL, transformed) );
1190  }
1191  else
1192  {
1193  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, NULL, " * ", 1, &nonlinvar, NULL, transformed) );
1194  }
1195 
1196  if( exponent == 2.0)
1197  {
1198  if( offset != 0.0 )
1199  {
1200  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "abs(%g ", offset);
1201  appendLine(scip, file, linebuffer, &linecnt, buffer);
1202  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "+", ")", 1, &nonlinvar, NULL, transformed) );
1203  }
1204  else
1205  {
1206  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "abs", NULL, 1, &nonlinvar, NULL, transformed) );
1207  }
1208  }
1209  else
1210  {
1211  if( offset != 0.0 )
1212  {
1213  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "abs(%g ", offset);
1214  appendLine(scip, file, linebuffer, &linecnt, buffer);
1215  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "+", ")", 1, &nonlinvar, NULL, transformed) );
1216  }
1217  else
1218  {
1219  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "abs", NULL, 1, &nonlinvar, NULL, transformed) );
1220  }
1221  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "**%g", exponent-1.0);
1222  appendLine(scip, file, linebuffer, &linecnt, buffer);
1223  }
1224  }
1225  *nsmooth = TRUE;
1226  }
1227  else if( nisoddint || !SCIPisNegative(scip, SCIPvarGetLbGlobal(nonlinvar)) )
1228  {
1229  if( exponent == 2.0 )
1230  {
1231  if( offset != 0.0 )
1232  {
1233  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "sqr(%g ", offset);
1234  appendLine(scip, file, linebuffer, &linecnt, buffer);
1235  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "+", ")", 1, &nonlinvar, NULL, transformed) );
1236  }
1237  else
1238  {
1239  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "sqr", NULL, 1, &nonlinvar, NULL, transformed) );
1240  }
1241  }
1242  else
1243  {
1244  if( offset != 0.0 )
1245  {
1246  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "power(%g ", offset);
1247  appendLine(scip, file, linebuffer, &linecnt, buffer);
1248  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "+", ",", 1, &nonlinvar, NULL, transformed) );
1249  }
1250  else
1251  {
1252  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "power(", ",", 1, &nonlinvar, NULL, transformed) );
1253  }
1254  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%g)", exponent);
1255  appendLine(scip, file, linebuffer, &linecnt, buffer);
1256  }
1257  }
1258  else
1259  {
1260  assert(fixedsign && !SCIPisPositive(scip, SCIPvarGetUbGlobal(nonlinvar)));
1261  if( exponent == 2.0 )
1262  {
1263  if( offset != 0.0 )
1264  {
1265  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "-sqr(%g ", -offset);
1266  appendLine(scip, file, linebuffer, &linecnt, buffer);
1267  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "-", ")", 1, &nonlinvar, NULL, transformed) );
1268  }
1269  else
1270  {
1271  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "-sqr(-", ")", 1, &nonlinvar, NULL, transformed) );
1272  }
1273  }
1274  else
1275  {
1276  if( offset != 0.0 )
1277  {
1278  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "-power(%g ", -offset);
1279  appendLine(scip, file, linebuffer, &linecnt, buffer);
1280  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "-", ",", 1, &nonlinvar, NULL, transformed) );
1281  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%g)", exponent);
1282  appendLine(scip, file, linebuffer, &linecnt, buffer);
1283  }
1284  else
1285  {
1286  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "-power(-", ",", 1, &nonlinvar, NULL, transformed) );
1287  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%g)", exponent);
1288  appendLine(scip, file, linebuffer, &linecnt, buffer);
1289  }
1290  }
1291  }
1292 
1293  /* print linear term */
1294  if( linvar != NULL )
1295  {
1296  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, " +", "", 1, &linvar, &coeflinear, transformed) );
1297  }
1298 
1299  /* print right hand side */
1300  if( linecnt == 0 )
1301  {
1302  /* we start a new line; therefore we tab this line */
1303  appendLine(scip, file, linebuffer, &linecnt, " ");
1304  }
1305 
1306  if( SCIPisZero(scip, rhs) )
1307  rhs = 0.0;
1308 
1309  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s %.15g;", type, rhs);
1310 
1311  appendLine(scip, file, linebuffer, &linecnt, buffer);
1312 
1313  endLine(scip, file, linebuffer, &linecnt);
1314 
1315  return SCIP_OKAY;
1316 }
1317 
1318 /* print signpower cons in GAMS format to file stream (performing retransformation to active variables)
1319  */
1320 static
1321 SCIP_RETCODE printSignpowerCons(
1322  SCIP* scip, /**< SCIP data structure */
1323  FILE* file, /**< output file (or NULL for standard output) */
1324  const char* rowname, /**< row name */
1325  SCIP_VAR* nonlinvar, /**< nonlinear variable */
1326  SCIP_VAR* linvar, /**< linear variable, may be NULL */
1327  SCIP_Real exponent, /**< exponent of nonlinear variable */
1328  SCIP_Real offset, /**< offset of nonlinear variable */
1329  SCIP_Real coeflinear, /**< coefficient of linear variable */
1330  SCIP_Real lhs, /**< left hand side */
1331  SCIP_Real rhs, /**< right hand side */
1332  SCIP_Bool transformed, /**< transformed constraint? */
1333  SCIP_Bool signpowerallowed, /**< allowed to use signpower operator in GAMS? */
1334  SCIP_Bool* nsmooth /**< buffer to store whether we printed a nonsmooth function */
1335  )
1336 {
1337  assert( scip != NULL );
1338  assert( strlen(rowname) > 0 );
1339 
1340  /* print row(s) in GAMS format */
1341  if( SCIPisEQ(scip, lhs, rhs) )
1342  {
1343  assert( !SCIPisInfinity(scip, rhs) );
1344 
1345  /* print equality constraint */
1346  SCIP_CALL( printSignpowerRow(scip, file, rowname, "", "=e=",
1347  nonlinvar, linvar, exponent, offset, coeflinear, rhs, transformed, signpowerallowed, nsmooth) );
1348  }
1349  else
1350  {
1351  if( !SCIPisInfinity(scip, -lhs) )
1352  {
1353  /* print inequality ">=" */
1354  SCIP_CALL( printSignpowerRow(scip, file, rowname, SCIPisInfinity(scip, rhs) ? "" : "_lhs", "=g=",
1355  nonlinvar, linvar, exponent, offset, coeflinear, lhs, transformed, signpowerallowed, nsmooth) );
1356  }
1357  if( !SCIPisInfinity(scip, rhs) )
1358  {
1359  /* print inequality "<=" */
1360  SCIP_CALL( printSignpowerRow(scip, file, rowname, SCIPisInfinity(scip, -lhs) ? "" : "_rhs", "=l=",
1361  nonlinvar, linvar, exponent, offset, coeflinear, rhs, transformed, signpowerallowed, nsmooth) );
1362  }
1363  }
1364 
1365  return SCIP_OKAY;
1366 }
1367 
1368 /* prints expression in GAMS format to file stream */
1369 static
1370 SCIP_RETCODE printExpr(
1371  SCIP* scip, /**< SCIP data structure */
1372  FILE* file, /**< output file (or NULL for standard output) */
1373  char* linebuffer, /**< line buffer of length GMS_MAX_PRINTLEN */
1374  int* linecnt, /**< number of characters in line so far */
1375  SCIP_Bool* nsmooth, /**< buffer to store whether we printed a nonsmooth function */
1376  SCIP_Bool transformed, /**< expression belongs to transformed constraint? */
1377  SCIP_EXPR* expr, /**< expression to print */
1378  SCIP_VAR** exprvars /**< variables of expression */
1379  )
1380 {
1381  char buffer[GMS_MAX_PRINTLEN];
1382 
1383  assert(scip != NULL);
1384  assert(linebuffer != NULL);
1385  assert(linecnt != NULL);
1386  assert(expr != NULL);
1387  assert(nsmooth != NULL);
1388 
1389  switch( SCIPexprGetOperator(expr) )
1390  {
1391  case SCIP_EXPR_VARIDX:
1392  {
1393  SCIP_Real one;
1394 
1395  assert(exprvars != NULL);
1396 
1397  one = 1.0;
1398  SCIP_CALL( printActiveVariables(scip, file, linebuffer, linecnt, "", "", 1, &exprvars[SCIPexprGetOpIndex(expr)], &one, transformed) );
1399 
1400  break;
1401  }
1402 
1403  case SCIP_EXPR_PARAM:
1404  {
1405  SCIPwarningMessage(scip, "parameterized expression in GAMS writer. GAMS file will not compile.\n");
1406 
1407  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "param%d", SCIPexprGetOpIndex(expr));
1408  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1409 
1410  break;
1411  }
1412 
1413  case SCIP_EXPR_CONST:
1414  {
1415  if( SCIPexprGetOpReal(expr) < 0.0 )
1416  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "(%.15g)", SCIPexprGetOpReal(expr));
1417  else
1418  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%.15g", SCIPexprGetOpReal(expr));
1419  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1420 
1421  break;
1422  }
1423 
1424  case SCIP_EXPR_PLUS:
1425  {
1426  appendLineWithIndent(scip, file, linebuffer, linecnt, "(");
1427  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1428  appendLineWithIndent(scip, file, linebuffer, linecnt, " + ");
1429  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[1], exprvars) );
1430  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1431  break;
1432  }
1433 
1434  case SCIP_EXPR_MINUS:
1435  {
1436  appendLineWithIndent(scip, file, linebuffer, linecnt, "(");
1437  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1438  appendLineWithIndent(scip, file, linebuffer, linecnt, " - ");
1439  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[1], exprvars) );
1440  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1441  break;
1442  }
1443 
1444  case SCIP_EXPR_MUL:
1445  {
1446  appendLineWithIndent(scip, file, linebuffer, linecnt, "(");
1447  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1448  appendLineWithIndent(scip, file, linebuffer, linecnt, " * ");
1449  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[1], exprvars) );
1450  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1451  break;
1452  }
1453 
1454  case SCIP_EXPR_DIV:
1455  {
1456  appendLineWithIndent(scip, file, linebuffer, linecnt, "(");
1457  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1458  appendLineWithIndent(scip, file, linebuffer, linecnt, " / ");
1459  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[1], exprvars) );
1460  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1461  break;
1462  }
1463 
1464  case SCIP_EXPR_REALPOWER:
1465  {
1466  appendLineWithIndent(scip, file, linebuffer, linecnt, "(");
1467  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1468  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, ")**(%.15g)", SCIPexprGetRealPowerExponent(expr));
1469  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1470  break;
1471  }
1472 
1473  case SCIP_EXPR_INTPOWER:
1474  {
1475  appendLineWithIndent(scip, file, linebuffer, linecnt, "power(");
1476  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1477  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, ", %d)", SCIPexprGetIntPowerExponent(expr));
1478  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1479  break;
1480  }
1481 
1482  case SCIP_EXPR_SIGNPOWER:
1483  {
1484  SCIP_Real exponent;
1485  SCIP_Bool nisoddint;
1486 
1487  /* signpow(x,y) is printed as x*abs(x) if y == 2, x*(abs(x) ** (y-1)) if y is not 2 and not an odd integer, and as intpower(x,y) if y is an odd integer
1488  * but if reading/gmsreader/signpower is TRUE, then we print as signpower(x,y), unless y is odd integer
1489  */
1490  exponent = SCIPexprGetSignPowerExponent(expr);
1491  nisoddint = (((SCIP_Real)((int)exponent)) == exponent) && (((int)exponent)%2 == 1); /*lint !e777*/
1492 
1493  if( !nisoddint )
1494  {
1495  SCIP_Bool signpowerallowed;
1496 
1497  SCIP_CALL( SCIPgetBoolParam(scip, "reading/gmsreader/signpower", &signpowerallowed) );
1498 
1499  if( signpowerallowed )
1500  {
1501  appendLineWithIndent(scip, file, linebuffer, linecnt, " * signpower(");
1502  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1503  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, ", %.15g)", exponent);
1504  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1505  }
1506  else
1507  {
1508  appendLineWithIndent(scip, file, linebuffer, linecnt, "(");
1509  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1510  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1511 
1512  if( exponent == 2.0)
1513  {
1514  appendLineWithIndent(scip, file, linebuffer, linecnt, " * abs(");
1515  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1516  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1517  }
1518  else
1519  {
1520  appendLineWithIndent(scip, file, linebuffer, linecnt, " * abs(");
1521  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1522  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, ")**(%g)", SCIPexprGetRealPowerExponent(expr)-1.0);
1523  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1524  }
1525  }
1526  *nsmooth = TRUE;
1527  }
1528  else
1529  {
1530  appendLineWithIndent(scip, file, linebuffer, linecnt, " * power(");
1531  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1532  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, ", %.15g)", exponent);
1533  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1534  }
1535 
1536  break;
1537  }
1538 
1539  case SCIP_EXPR_ABS:
1540  case SCIP_EXPR_SIGN:
1541  *nsmooth = TRUE; /*lint -fallthrough*/
1542  case SCIP_EXPR_SQUARE:
1543  case SCIP_EXPR_SQRT:
1544  case SCIP_EXPR_EXP:
1545  case SCIP_EXPR_LOG:
1546  case SCIP_EXPR_SIN:
1547  case SCIP_EXPR_COS:
1548  case SCIP_EXPR_TAN:
1549  /* case SCIP_EXPR_ERF: */
1550  /* case SCIP_EXPR_ERFI: */
1551  case SCIP_EXPR_MIN:
1552  case SCIP_EXPR_MAX:
1553  {
1554  int i;
1555 
1556  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s(", SCIPexpropGetName(SCIPexprGetOperator(expr)));
1557  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1558 
1559  for( i = 0; i < SCIPexprGetNChildren(expr); ++i )
1560  {
1561  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[i], exprvars) );
1562  if( i + 1 < SCIPexprGetNChildren(expr) )
1563  appendLineWithIndent(scip, file, linebuffer, linecnt, ", ");
1564  }
1565 
1566  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1567  break;
1568  }
1569 
1570  case SCIP_EXPR_SUM:
1571  case SCIP_EXPR_PRODUCT:
1572  {
1573  switch( SCIPexprGetNChildren(expr) )
1574  {
1575  case 0:
1576  {
1577  appendLineWithIndent(scip, file, linebuffer, linecnt, SCIPexprGetOperator(expr) == SCIP_EXPR_SUM ? "0" : "1");
1578  break;
1579  }
1580  case 1:
1581  {
1582  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[0], exprvars) );
1583  break;
1584  }
1585  default:
1586  {
1587  int i;
1588  char opstr[GMS_MAX_PRINTLEN];
1589 
1590  (void) SCIPsnprintf(opstr, GMS_MAX_PRINTLEN, SCIPexprGetOperator(expr) == SCIP_EXPR_SUM ? " + " : " * ");
1591  appendLineWithIndent(scip, file, linebuffer, linecnt, "(");
1592  for( i = 0; i < SCIPexprGetNChildren(expr); ++i )
1593  {
1594  if( i > 0 )
1595  {
1596  appendLineWithIndent(scip, file, linebuffer, linecnt, opstr);
1597  }
1598  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[i], exprvars) );
1599  }
1600  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1601  }
1602  }
1603  break;
1604  }
1605 
1606  case SCIP_EXPR_LINEAR:
1607  {
1608  SCIP_Real constant;
1609  int i;
1610 
1611  constant = SCIPexprGetLinearConstant(expr);
1612 
1613  if( SCIPexprGetNChildren(expr) == 0 )
1614  {
1615  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%.15g", constant);
1616  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1617  break;
1618  }
1619 
1620  appendLineWithIndent(scip, file, linebuffer, linecnt, "(");
1621 
1622  if( constant != 0.0 )
1623  {
1624  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%.15g", constant);
1625  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1626  }
1627 
1628  for( i = 0; i < SCIPexprGetNChildren(expr); ++i )
1629  {
1630  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %+.15g * ", SCIPexprGetLinearCoefs(expr)[i]);
1631  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1632  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[i], exprvars) );
1633  }
1634 
1635  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1636  break;
1637  }
1638 
1639  case SCIP_EXPR_QUADRATIC:
1640  {
1641  SCIP_Real constant;
1642  int i;
1643  SCIP_QUADELEM* quadelems;
1644  SCIP_Real* lincoefs;
1645 
1646  constant = SCIPexprGetQuadConstant(expr);
1647 
1648  if( SCIPexprGetNChildren(expr) == 0 )
1649  {
1650  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%.15g", constant);
1651  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1652  break;
1653  }
1654 
1655  appendLineWithIndent(scip, file, linebuffer, linecnt, "(");
1656 
1657  if( constant != 0.0 )
1658  {
1659  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%.15g", constant);
1660  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1661  }
1662 
1663  lincoefs = SCIPexprGetQuadLinearCoefs(expr);
1664  if( lincoefs != NULL )
1665  for( i = 0; i < SCIPexprGetNChildren(expr); ++i )
1666  {
1667  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %+.15g * ", lincoefs[i]);
1668  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1669  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[i], exprvars) );
1670  }
1671 
1672  quadelems = SCIPexprGetQuadElements(expr);
1673  for( i = 0; i < SCIPexprGetNQuadElements(expr); ++i )
1674  {
1675  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %+.15g * ", quadelems[i].coef);
1676  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1677 
1678  if( quadelems[i].idx1 == quadelems[i].idx2 )
1679  {
1680  appendLineWithIndent(scip, file, linebuffer, linecnt, "sqr(");
1681  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[quadelems[i].idx1], exprvars) );
1682  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1683  }
1684  else
1685  {
1686  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[quadelems[i].idx1], exprvars) );
1687  appendLineWithIndent(scip, file, linebuffer, linecnt, " * ");
1688  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[quadelems[i].idx2], exprvars) );
1689  }
1690  }
1691 
1692  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1693  break;
1694  }
1695 
1696  case SCIP_EXPR_POLYNOMIAL:
1697  {
1698  SCIP_EXPRDATA_MONOMIAL* monomdata;
1699  SCIP_Real exponent;
1700  int i;
1701  int j;
1702 
1703  appendLineWithIndent(scip, file, linebuffer, linecnt, "(");
1704 
1705  if( SCIPexprGetPolynomialConstant(expr) != 0.0 || SCIPexprGetNMonomials(expr) == 0 )
1706  {
1707  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%.15g", SCIPexprGetPolynomialConstant(expr));
1708  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1709  }
1710 
1711  for( i = 0; i < SCIPexprGetNMonomials(expr); ++i )
1712  {
1713  monomdata = SCIPexprGetMonomials(expr)[i];
1714  assert(monomdata != NULL);
1715 
1716  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %+.15g", SCIPexprGetMonomialCoef(monomdata));
1717  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1718 
1719  for( j = 0; j < SCIPexprGetMonomialNFactors(monomdata); ++j )
1720  {
1721  appendLineWithIndent(scip, file, linebuffer, linecnt, "*");
1722 
1723  exponent = SCIPexprGetMonomialExponents(monomdata)[j];
1724  if( exponent == 1.0 )
1725  {
1726  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[SCIPexprGetMonomialChildIndices(monomdata)[j]], exprvars) );
1727  }
1728  else if( exponent == 2.0 )
1729  {
1730  appendLineWithIndent(scip, file, linebuffer, linecnt, "sqr(");
1731  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[SCIPexprGetMonomialChildIndices(monomdata)[j]], exprvars) );
1732  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1733  }
1734  else if( exponent == 0.5 )
1735  {
1736  appendLineWithIndent(scip, file, linebuffer, linecnt, "sqrt(");
1737  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[SCIPexprGetMonomialChildIndices(monomdata)[j]], exprvars) );
1738  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1739  }
1740  else if( ((SCIP_Real)((int)exponent)) == exponent ) /*lint !e777*/
1741  {
1742  appendLineWithIndent(scip, file, linebuffer, linecnt, "power(");
1743  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[SCIPexprGetMonomialChildIndices(monomdata)[j]], exprvars) );
1744  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, ", %d)", (int)SCIPround(scip, exponent));
1745  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1746  }
1747  else
1748  {
1749  SCIP_CALL( printExpr(scip, file, linebuffer, linecnt, nsmooth, transformed, SCIPexprGetChildren(expr)[SCIPexprGetMonomialChildIndices(monomdata)[j]], exprvars) );
1750  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " ** %.15g", exponent);
1751  appendLineWithIndent(scip, file, linebuffer, linecnt, buffer);
1752  }
1753  }
1754  }
1755 
1756  appendLineWithIndent(scip, file, linebuffer, linecnt, ")");
1757  break;
1758  }
1759 
1760  default:
1761  SCIPerrorMessage("unexpected operand %d in expression\n", SCIPexprGetOperator(expr));
1762  return SCIP_OKAY;
1763  } /*lint !e788*/
1764 
1765  return SCIP_OKAY;
1766 }
1767 
1768 /* print nonlinear row in GAMS format to file stream */
1769 static
1770 SCIP_RETCODE printNonlinearRow(
1771  SCIP* scip, /**< SCIP data structure */
1772  FILE* file, /**< output file (or NULL for standard output) */
1773  const char* rowname, /**< row name */
1774  const char* rownameextension, /**< row name extension */
1775  const char* type, /**< row type ("=e=", "=l=", or "=g=") */
1776  int nlinvars, /**< number of linear terms */
1777  SCIP_VAR** linvars, /**< variables in linear part */
1778  SCIP_Real* lincoeffs, /**< coefficients of variables in linear part */
1779  int nexprtrees, /**< number of expression trees */
1780  SCIP_EXPRTREE** exprtrees, /**< expression trees */
1781  SCIP_Real* exprtreecoefs, /**< expression tree coefficients */
1782  SCIP_Real rhs, /**< right hand side */
1783  SCIP_Bool transformed, /**< transformed constraint? */
1784  SCIP_Bool* nsmooth /**< buffer to store whether we printed a nonsmooth function */
1785  )
1786 {
1787  char linebuffer[GMS_MAX_PRINTLEN+1] = { '\0' };
1788  int linecnt;
1789 
1790  char consname[GMS_MAX_NAMELEN + 3]; /* four extra characters for ' ..' */
1791  char buffer[GMS_MAX_PRINTLEN];
1792 
1793  int i;
1794 
1795  assert( scip != NULL );
1796  assert( strlen(rowname) > 0 || strlen(rownameextension) > 0 );
1797  assert( strcmp(type, "=e=") == 0 || strcmp(type, "=l=") == 0 || strcmp(type, "=g=") == 0 );
1798 
1799  clearLine(linebuffer, &linecnt);
1800 
1801  /* start each line with a space */
1802  appendLine(scip, file, linebuffer, &linecnt, " ");
1803 
1804  /* print row name */
1805  (void) SCIPsnprintf(buffer, GMS_MAX_NAMELEN + 3, "%s%s ..", rowname, rownameextension);
1806  SCIP_CALL( printConformName(scip, consname, GMS_MAX_NAMELEN + 3, buffer) );
1807 
1808  appendLine(scip, file, linebuffer, &linecnt, consname);
1809 
1810  /* print nonlinear terms
1811  */
1812  for( i = 0; i < nexprtrees; ++i )
1813  {
1814  assert(exprtrees[i] != NULL);
1815  if( exprtreecoefs[i] != 0.0 )
1816  {
1817  (void) SCIPsnprintf(buffer, GMS_MAX_NAMELEN + 3, "%+g * (", exprtreecoefs[i]);
1818  appendLineWithIndent(scip, file, linebuffer, &linecnt, buffer);
1819  SCIP_CALL( printExpr(scip, file, linebuffer, &linecnt, nsmooth, transformed, SCIPexprtreeGetRoot(exprtrees[i]), SCIPexprtreeGetVars(exprtrees[i])) );
1820  appendLineWithIndent(scip, file, linebuffer, &linecnt, ")");
1821  }
1822  }
1823 
1824  /* print linear terms, do after nonlinear since nonlinear may not print sign in beginning */
1825  if( nlinvars > 0 )
1826  {
1827  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "+", " ", nlinvars, linvars, lincoeffs, transformed) );
1828  }
1829 
1830  /* print right hand side */
1831  if( linecnt == 0 )
1832  /* we start a new line; therefore we tab this line */
1833  appendLine(scip, file, linebuffer, &linecnt, " ");
1834 
1835  if( SCIPisZero(scip, rhs) )
1836  rhs = 0.0;
1837 
1838  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s %.15g;", type, rhs);
1839 
1840  appendLine(scip, file, linebuffer, &linecnt, buffer);
1841 
1842  endLine(scip, file, linebuffer, &linecnt);
1843 
1844  return SCIP_OKAY;
1845 }
1846 
1847 /* print nonlinear row in GAMS format to file stream (performing retransformation to active linear variables)
1848  * */
1849 static
1850 SCIP_RETCODE printNonlinearCons(
1851  SCIP* scip, /**< SCIP data structure */
1852  FILE* file, /**< output file (or NULL for standard output) */
1853  const char* rowname, /**< row name */
1854  int nlinvars, /**< number of linear terms */
1855  SCIP_VAR** linvars, /**< variables in linear part */
1856  SCIP_Real* lincoeffs, /**< coefficients of variables in linear part */
1857  int nexprtrees, /**< number of expression trees */
1858  SCIP_EXPRTREE** exprtrees, /**< expression trees */
1859  SCIP_Real* exprtreecoefs, /**< expression tree coefficients */
1860  SCIP_Real lhs, /**< left hand side */
1861  SCIP_Real rhs, /**< right hand side */
1862  SCIP_Bool transformed, /**< transformed constraint? */
1863  SCIP_Bool* nsmooth /**< buffer to store whether we printed a nonsmooth function */
1864  )
1865 {
1866  assert( scip != NULL );
1867  assert( strlen(rowname) > 0 );
1868 
1869  /* print row(s) in GAMS format */
1870  if( SCIPisEQ(scip, lhs, rhs) )
1871  {
1872  assert( !SCIPisInfinity(scip, rhs) );
1873 
1874  /* print equality constraint */
1875  SCIP_CALL( printNonlinearRow(scip, file, rowname, "", "=e=",
1876  nlinvars, linvars, lincoeffs, nexprtrees, exprtrees, exprtreecoefs, rhs, transformed, nsmooth) );
1877  }
1878  else
1879  {
1880  if( !SCIPisInfinity(scip, -lhs) )
1881  {
1882  /* print inequality ">=" */
1883  SCIP_CALL( printNonlinearRow(scip, file, rowname, SCIPisInfinity(scip, rhs) ? "" : "_lhs", "=g=",
1884  nlinvars, linvars, lincoeffs, nexprtrees, exprtrees, exprtreecoefs, lhs, transformed, nsmooth) );
1885  }
1886  if( !SCIPisInfinity(scip, rhs) )
1887  {
1888  /* print inequality "<=" */
1889  SCIP_CALL( printNonlinearRow(scip, file, rowname, SCIPisInfinity(scip, -lhs) ? "" : "_rhs", "=l=",
1890  nlinvars, linvars, lincoeffs, nexprtrees, exprtrees, exprtreecoefs, rhs, transformed, nsmooth) );
1891  }
1892  }
1893 
1894  return SCIP_OKAY;
1895 }
1896 
1897 /** method check if the variable names are not longer than GMS_MAX_NAMELEN */
1898 static
1899 SCIP_RETCODE checkVarnames(
1900  SCIP* scip, /**< SCIP data structure */
1901  SCIP_VAR** vars, /**< array of variables */
1902  int nvars /**< number of variables */
1903  )
1904 {
1905  int v;
1906  SCIP_VAR* var;
1907  SCIP_Bool replaceforbiddenchars;
1908  const char* badchar;
1909 
1910  assert( scip != NULL );
1911  assert( vars != NULL );
1912 
1913  SCIP_CALL( SCIPgetBoolParam(scip, "reading/gmsreader/replaceforbiddenchars", &replaceforbiddenchars) );
1914 
1915  /* check if the variable names contain any of the bad symbols */
1916  for( badchar = badchars; *badchar; ++badchar )
1917  {
1918  for( v = 0; v < nvars; ++v )
1919  {
1920  var = vars[v];
1921  assert( var != NULL );
1922 
1923  if( strchr(SCIPvarGetName(var), *badchar) != NULL )
1924  {
1925  if( replaceforbiddenchars )
1926  {
1927  SCIPinfoMessage(scip, NULL, "there is a variable name with symbol '%c', not allowed in GAMS format; all '%c' replaced by '_' (consider using 'write genproblem'/'write gentransproblem').\n", *badchar, *badchar);
1928  }
1929  else
1930  {
1931  SCIPwarningMessage(scip, "there is a variable name with symbol '%c', not allowed in GAMS format; use 'write genproblem'/'write gentransproblem', or set 'reading/gmsreader/replaceforbiddenchars' to TRUE and risk duplicate variable names.\n", *badchar);
1932  }
1933 
1934  break;
1935  }
1936  }
1937  }
1938 
1939  /* check if the variable names are too long */
1940  for( v = 0; v < nvars; ++v )
1941  {
1942  var = vars[v];
1943  assert( var != NULL );
1944 
1945  if( strlen(SCIPvarGetName(var)) > GMS_MAX_NAMELEN )
1946  {
1947  SCIPwarningMessage(scip, "there is a variable name which has to be cut down to %d characters; GAMS model might be corrupted.\n",
1948  GMS_MAX_NAMELEN - 1);
1949  break;
1950  }
1951  }
1952 
1953  return SCIP_OKAY;
1954 }
1955 
1956 /** method check if the constraint names are not longer than GMS_MAX_NAMELEN */
1957 static
1958 SCIP_RETCODE checkConsnames(
1959  SCIP* scip, /**< SCIP data structure */
1960  SCIP_CONS** conss, /**< array of constraints */
1961  int nconss, /**< number of constraints */
1962  SCIP_Bool transformed /**< TRUE iff problem is the transformed problem */
1963  )
1964 {
1965  int c;
1966  SCIP_CONS* cons;
1967  SCIP_CONSHDLR* conshdlr;
1968  const char* conshdlrname;
1969  SCIP_Bool replaceforbiddenchars;
1970  const char* badchar;
1971 
1972  assert( scip != NULL );
1973  assert( conss != NULL );
1974 
1975  SCIP_CALL( SCIPgetBoolParam(scip, "reading/gmsreader/replaceforbiddenchars", &replaceforbiddenchars) );
1976 
1977  /* check if the constraint names contain any of the bad symbols */
1978  for( badchar = badchars; *badchar; ++badchar )
1979  {
1980  for( c = 0; c < nconss; ++c )
1981  {
1982  cons = conss[c];
1983  assert( cons != NULL );
1984 
1985  if( strchr(SCIPconsGetName(cons), *badchar) != NULL )
1986  {
1987  if( replaceforbiddenchars )
1988  {
1989  SCIPinfoMessage(scip, NULL, "there is a constraint name with symbol '%c', not allowed in GAMS format; all '%c' replaced by '_' (consider using 'write genproblem'/'write gentransproblem').\n", *badchar, *badchar);
1990  }
1991  else
1992  {
1993  SCIPwarningMessage(scip, "there is a constraint name with symbol '%c', not allowed in GAMS format; use 'write genproblem'/'write gentransproblem', or set 'reading/gmsreader/replaceforbiddenchars' to TRUE and risk duplicate variable names.\n", *badchar);
1994  }
1995 
1996  break;
1997  }
1998  }
1999  }
2000 
2001  /* check if the constraint names are too long */
2002  for( c = 0; c < nconss; ++c )
2003  {
2004  cons = conss[c];
2005  assert( cons != NULL );
2006 
2007  /* in case the transformed is written, only constraints are posted which are enabled in the current node */
2008  assert(!transformed || SCIPconsIsEnabled(cons));
2009 
2010  conshdlr = SCIPconsGetHdlr(cons);
2011  assert( conshdlr != NULL );
2012 
2013  conshdlrname = SCIPconshdlrGetName(conshdlr);
2014  assert( transformed == SCIPconsIsTransformed(cons) );
2015 
2016  if( strcmp(conshdlrname, "linear") == 0 || strcmp(conshdlrname, "quadratic") == 0 )
2017  {
2018  SCIP_Real lhs = strcmp(conshdlrname, "linear") == 0 ? SCIPgetLhsLinear(scip, cons) : SCIPgetLhsQuadratic(scip, cons);
2019  SCIP_Real rhs = strcmp(conshdlrname, "linear") == 0 ? SCIPgetLhsLinear(scip, cons) : SCIPgetRhsQuadratic(scip, cons);
2020 
2021  if( SCIPisEQ(scip, lhs, rhs) && strlen(SCIPconsGetName(conss[c])) > GMS_MAX_NAMELEN )
2022  {
2023  SCIPwarningMessage(scip, "there is a constraint name which has to be cut down to %d characters;\n",
2024  GMS_MAX_NAMELEN - 1);
2025  break;
2026  }
2027  else if( !SCIPisEQ(scip, lhs, rhs) && strlen(SCIPconsGetName(conss[c])) > GMS_MAX_NAMELEN - 4 )
2028  {
2029  SCIPwarningMessage(scip, "there is a constraint name which has to be cut down to %d characters;\n",
2030  GMS_MAX_NAMELEN - 5);
2031  break;
2032  }
2033  }
2034  else if( strlen(SCIPconsGetName(conss[c])) > GMS_MAX_NAMELEN )
2035  {
2036  SCIPwarningMessage(scip, "there is a constraint name which has to be cut down to %d characters;\n",
2037  GMS_MAX_NAMELEN - 1);
2038  break;
2039  }
2040  }
2041  return SCIP_OKAY;
2042 }
2043 
2044 
2045 /*
2046  * Callback methods of reader
2047  */
2048 
2049 /** copy method for reader plugins (called when SCIP copies plugins) */
2050 static
2051 SCIP_DECL_READERCOPY(readerCopyGms)
2052 { /*lint --e{715}*/
2053  assert(scip != NULL);
2054  assert(reader != NULL);
2055  assert(strcmp(SCIPreaderGetName(reader), READER_NAME) == 0);
2056 
2057  /* call inclusion method of reader */
2058  SCIP_CALL( SCIPincludeReaderGms(scip) );
2059 
2060  return SCIP_OKAY;
2061 }
2062 
2063 #ifdef WITH_GAMS
2064 /** problem reading method of reader */
2065 static
2066 SCIP_DECL_READERREAD(readerReadGms)
2067 {
2068  SCIP_RETCODE ret;
2069  FILE* convertdopt;
2070  char gamscall[SCIP_MAXSTRLEN];
2071  char buffer[GMS_SSSIZE];
2072  int rc;
2073  gmoHandle_t gmo = NULL;
2074  gevHandle_t gev = NULL;
2075 
2076  assert(scip != NULL);
2077  assert(reader != NULL);
2078  assert(filename != NULL);
2079  assert(result != NULL);
2080 
2081  *result = SCIP_DIDNOTRUN;
2082  ret = SCIP_ERROR;
2083 
2084  /* create temporary directory */
2085  mkdir("loadgms.tmp", S_IRWXU);
2086 
2087  /* create empty convertd options file */
2088  convertdopt = fopen("loadgms.tmp/convertd.opt", "w");
2089  if( convertdopt == NULL )
2090  {
2091  SCIPerrorMessage("Could not create convertd options file. Do you have write permissions in execution directory?\n");
2092  goto TERMINATE;
2093  }
2094  fputs(" ", convertdopt);
2095  fclose(convertdopt);
2096 
2097  /* call GAMS with convertd solver to get compiled model instance in temporary directory */
2098  SCIPsnprintf(gamscall, SCIP_MAXSTRLEN, WITH_GAMS "/gams %s LP=CONVERTD RMIP=CONVERTD QCP=CONVERTD RMIQCP=CONVERTD NLP=CONVERTD DNLP=CONVERTD RMINLP=CONVERTD CNS=CONVERTD MIP=CONVERTD MIQCP=CONVERTD MINLP=CONVERTD MCP=CONVERTD MPEC=CONVERTD RMPEC=CONVERTD SCRDIR=loadgms.tmp output=loadgms.tmp/listing optdir=loadgms.tmp optfile=1 pf4=0 solprint=0 limcol=0 limrow=0 pc=2 lo=%d",
2099  filename, SCIPgetVerbLevel(scip) == SCIP_VERBLEVEL_FULL ? 3 : 0);
2100  SCIPdebugMsg(scip, gamscall);
2101  rc = system(gamscall);
2102  if( rc != 0 )
2103  {
2104  SCIPerrorMessage("GAMS call returned with code %d, check loadgms.tmp/listing for details.\n", rc);
2105  /* likely the GAMS model could not be compiled, which we could report as a readerror */
2106  ret = SCIP_READERROR;
2107  goto TERMINATE;
2108  }
2109 
2110  /* initialize GEV library and create GEV */
2111  if( !gevCreateDD(&gev, WITH_GAMS, buffer, sizeof(buffer)) )
2112  {
2113  SCIPerrorMessage(buffer);
2114  goto TERMINATE;
2115  }
2116 
2117  /* initialize GMO library and create GMO */
2118  if( !gmoCreateDD(&gmo, WITH_GAMS, buffer, sizeof(buffer)) )
2119  {
2120  SCIPerrorMessage(buffer);
2121  goto TERMINATE;
2122  }
2123 
2124  /* load control file */
2125  if( gevInitEnvironmentLegacy(gev, "loadgms.tmp/gamscntr.dat") )
2126  {
2127  SCIPerrorMessage("Could not load control file loadgms.tmp/gamscntr.dat\n");
2128  goto TERMINATE;
2129  }
2130 
2131  /* tell GMO about GEV */
2132  if( gmoRegisterEnvironment(gmo, gev, buffer) )
2133  {
2134  SCIPerrorMessage("Error registering GAMS Environment: %s\n", buffer);
2135  goto TERMINATE;
2136  }
2137 
2138  /* load GAMS model instance into GMO */
2139  if( gmoLoadDataLegacy(gmo, buffer) )
2140  {
2141  SCIPerrorMessage("Could not load model data.\n");
2142  goto TERMINATE;
2143  }
2144 
2145  /* create SCIP problem out of GMO, using the magic from reader_gmo in interfaces/gams */
2146  SCIP_CALL( SCIPcreateProblemReaderGmo(scip, gmo, NULL, FALSE) );
2147  *result = SCIP_SUCCESS;
2148 
2149  ret = SCIP_OKAY;
2150 
2151 TERMINATE:
2152  if( gmo != NULL )
2153  gmoFree(&gmo);
2154  if( gev != NULL )
2155  gevFree(&gev);
2156 
2157  /* remove temporary directory content (should have only files and directory itself) */
2158  if( ret != SCIP_READERROR )
2159  system("rm loadgms.tmp/* && rmdir loadgms.tmp");
2160 
2161  return ret;
2162 }
2163 #endif
2164 
2165 /** problem writing method of reader */
2166 static
2167 SCIP_DECL_READERWRITE(readerWriteGms)
2168 { /*lint --e{715}*/
2169  SCIP_CALL( SCIPwriteGms(scip, file, name, transformed, objsense, objscale, objoffset, vars,
2170  nvars, nbinvars, nintvars, nimplvars, ncontvars, conss, nconss, result) );
2171 
2172  return SCIP_OKAY;
2173 }
2174 
2175 #ifdef WITH_GAMS
2176 /** destructor of reader to free user data (called when SCIP is exiting) */
2177 static
2178 SCIP_DECL_READERFREE(readerFreeGms)
2179 {
2180  if( gmoLibraryLoaded() )
2181  gmoLibraryUnload();
2182  if( gevLibraryLoaded() )
2183  gevLibraryUnload();
2184 
2185  return SCIP_OKAY;
2186 }
2187 #endif
2188 
2189 /*
2190  * reader specific interface methods
2191  */
2192 
2193 /** includes the gms file reader in SCIP */
2194 SCIP_RETCODE SCIPincludeReaderGms(
2195  SCIP* scip /**< SCIP data structure */
2196  )
2197 {
2198  SCIP_READER* reader;
2199 
2200  /* include reader */
2201  SCIP_CALL( SCIPincludeReaderBasic(scip, &reader, READER_NAME, READER_DESC, READER_EXTENSION, NULL) );
2202 
2203  /* set non fundamental callbacks via setter functions */
2204  SCIP_CALL( SCIPsetReaderCopy(scip, reader, readerCopyGms) );
2205 #ifdef WITH_GAMS
2206  SCIP_CALL( SCIPsetReaderRead(scip, reader, readerReadGms) );
2207  SCIP_CALL( SCIPsetReaderFree(scip, reader, readerFreeGms) );
2208 #endif
2209  SCIP_CALL( SCIPsetReaderWrite(scip, reader, readerWriteGms) );
2210 
2211  /* add gms reader parameters for writing routines*/
2212  SCIP_CALL( SCIPaddBoolParam(scip,
2213  "reading/gmsreader/freeints", "have integer variables no upper bound by default (depending on GAMS version)?",
2214  NULL, FALSE, FALSE, NULL, NULL) );
2215 
2216  SCIP_CALL( SCIPaddBoolParam(scip,
2217  "reading/gmsreader/replaceforbiddenchars", "shall characters '#', '*', '+', '/', and '-' in variable and constraint names be replaced by '_'?",
2218  NULL, FALSE, FALSE, NULL, NULL) );
2219 
2220  SCIP_CALL( SCIPaddRealParam(scip,
2221  "reading/gmsreader/bigmdefault", "default M value for big-M reformulation of indicator constraints in case no bound on slack variable is given",
2222  NULL, FALSE, GMS_DEFAULT_BIGM, 0.0, SCIP_REAL_MAX, NULL, NULL) );
2223 
2224  SCIP_CALL( SCIPaddCharParam(scip,
2225  "reading/gmsreader/indicatorreform", "which reformulation to use for indicator constraints: 'b'ig-M, 's'os1",
2226  NULL, FALSE, GMS_DEFAULT_INDICATORREFORM, "bs", NULL, NULL) );
2227 
2228  SCIP_CALL( SCIPaddBoolParam(scip,
2229  "reading/gmsreader/signpower", "is it allowed to use the gams function signpower(x,a)?",
2230  NULL, FALSE, GMS_DEFAULT_SIGNPOWER, NULL, NULL) );
2231 
2232  return SCIP_OKAY;
2233 }
2234 
2235 
2236 /** writes problem to gms file */
2237 SCIP_RETCODE SCIPwriteGms(
2238  SCIP* scip, /**< SCIP data structure */
2239  FILE* file, /**< output file, or NULL if standard output should be used */
2240  const char* name, /**< problem name */
2241  SCIP_Bool transformed, /**< TRUE iff problem is the transformed problem */
2242  SCIP_OBJSENSE objsense, /**< objective sense */
2243  SCIP_Real objscale, /**< scalar applied to objective function; external objective value is
2244  * extobj = objsense * objscale * (intobj + objoffset) */
2245  SCIP_Real objoffset, /**< objective offset from bound shifting and fixing */
2246  SCIP_VAR** vars, /**< array with active variables ordered binary, integer, implicit, continuous */
2247  int nvars, /**< number of active variables in the problem */
2248  int nbinvars, /**< number of binary variables */
2249  int nintvars, /**< number of general integer variables */
2250  int nimplvars, /**< number of implicit integer variables */
2251  int ncontvars, /**< number of continuous variables */
2252  SCIP_CONS** conss, /**< array with constraints of the problem */
2253  int nconss, /**< number of constraints in the problem */
2254  SCIP_RESULT* result /**< pointer to store the result of the file writing call */
2255  )
2256 {
2257  int c;
2258  int v;
2259  int linecnt;
2260  char linebuffer[GMS_MAX_PRINTLEN+1];
2261 
2262  char varname[GMS_MAX_NAMELEN];
2263  char buffer[GMS_MAX_PRINTLEN];
2264 
2265  SCIP_Real* objcoeffs;
2266 
2267  SCIP_CONSHDLR* conshdlr;
2268  const char* conshdlrname;
2269  SCIP_CONS* cons;
2270 
2271  char consname[GMS_MAX_NAMELEN];
2272 
2273  SCIP_VAR** consvars;
2274  SCIP_Real* consvals;
2275  int nconsvars;
2276 
2277  SCIP_VAR* var;
2278  SCIP_VAR* objvar;
2279  SCIP_Real lb;
2280  SCIP_Real ub;
2281  SCIP_Bool freeints;
2282  SCIP_Bool nondefbounds;
2283  SCIP_Bool nlcons;
2284  SCIP_Bool nqcons;
2285  SCIP_Bool nsmooth;
2286  SCIP_Bool discrete;
2287  SCIP_Bool rangedrow;
2288  SCIP_Bool indicatorsosdef;
2289  SCIP_Bool signpowerallowed;
2290  SCIP_Bool needcomma;
2291 
2292  assert( scip != NULL );
2293  assert( vars != NULL || nvars == 0 );
2294 
2295  /* check if the variable names are not too long */
2296  SCIP_CALL( checkVarnames(scip, vars, nvars) );
2297  /* check if the constraint names are too long */
2298  SCIP_CALL( checkConsnames(scip, conss, nconss, transformed) );
2299 
2300  SCIP_CALL( SCIPgetBoolParam(scip, "reading/gmsreader/signpower", &signpowerallowed) );
2301 
2302  /* check if the objective is a single continuous variable, so we would not have to introduce an auxiliary variable
2303  * for GAMS
2304  */
2305  objvar = NULL;
2306  if( objscale == 1.0 && objoffset == 0.0 )
2307  {
2308  for( v = 0; v < nvars; ++v )
2309  {
2310  if( SCIPvarGetObj(vars[v]) == 0.0 ) /*lint !e613*/
2311  continue;
2312 
2313  if( objvar == NULL )
2314  {
2315  /* first variable with nonzero obj coefficient
2316  * if not active or having coefficient != 1.0, or being binary/integer, then give up
2317  */
2318  if( !SCIPvarIsActive(vars[v]) || SCIPvarGetObj(vars[v]) != 1.0 ||
2319  SCIPvarGetType(vars[v]) < SCIP_VARTYPE_IMPLINT ) /*lint !e613*/
2320  break;
2321 
2322  objvar = vars[v]; /*lint !e613*/
2323  }
2324  else
2325  {
2326  /* second variable with nonzero obj coefficient -> give up */
2327  objvar = NULL;
2328  break;
2329  }
2330  }
2331  }
2332 
2333  /* print statistics as comment to file */
2334  SCIPinfoMessage(scip, file, "$OFFLISTING\n");
2335  SCIPinfoMessage(scip, file, "* SCIP STATISTICS\n");
2336  SCIPinfoMessage(scip, file, "* Problem name : %s\n", name);
2337  SCIPinfoMessage(scip, file, "* Variables : %d (%d binary, %d integer, %d implicit integer, %d continuous)\n",
2338  nvars, nbinvars, nintvars, nimplvars, ncontvars);
2339  SCIPinfoMessage(scip, file, "* Constraints : %d\n\n", nconss);
2340 
2341  /* print flags */
2342  SCIPinfoMessage(scip, file, "$MAXCOL %d\n", GMS_MAX_LINELEN - 1);
2343  SCIPinfoMessage(scip, file, "$OFFDIGIT\n\n");
2344 
2345  /* print variable section */
2346  SCIPinfoMessage(scip, file, "Variables\n");
2347  clearLine(linebuffer, &linecnt);
2348 
2349  if( objvar == NULL )
2350  {
2351  /* auxiliary objective variable */
2352  SCIPinfoMessage(scip, file, " objvar%c", nvars > 0 ? ',' : ';');
2353  }
2354 
2355  /* "model" variables */
2356  for( v = 0; v < nvars; ++v )
2357  {
2358  var = vars[v]; /*lint !e613*/
2359  assert( var != NULL );
2360 
2361  SCIP_CALL( printConformName(scip, varname, GMS_MAX_NAMELEN, SCIPvarGetName(var)) );
2362  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %s%c", varname, (v < nvars - 1) ? ',' : ';');
2363  appendLine(scip, file, linebuffer, &linecnt, buffer);
2364 
2365  if( (linecnt > 0 && (v == nbinvars - 1 || v == nbinvars + nintvars - 1 ||
2366  v == nbinvars + nintvars + nimplvars - 1)) || v == nvars - 1 )
2367  {
2368  endLine(scip, file, linebuffer, &linecnt);
2369  clearLine(linebuffer, &linecnt);
2370  }
2371  }
2372 
2373  SCIPinfoMessage(scip, file, "\n");
2374 
2375  /* declare binary variables if present */
2376  if( nbinvars > 0 )
2377  {
2378  SCIPinfoMessage(scip, file, "Binary variables\n");
2379  clearLine(linebuffer, &linecnt);
2380 
2381  for( v = 0; v < nbinvars; ++v )
2382  {
2383  var = vars[v]; /*lint !e613*/
2384 
2385  SCIP_CALL( printConformName(scip, varname, GMS_MAX_NAMELEN, SCIPvarGetName(var)) );
2386  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %s%s", varname, (v < nbinvars - 1) ? "," : ";");
2387 
2388  appendLine(scip, file, linebuffer, &linecnt, buffer);
2389  }
2390 
2391  endLine(scip, file, linebuffer, &linecnt);
2392  SCIPinfoMessage(scip, file, "\n");
2393  }
2394 
2395  /* declare integer variables if present */
2396  if( nintvars > 0 )
2397  {
2398  SCIPinfoMessage(scip, file, "Integer variables\n");
2399  clearLine(linebuffer, &linecnt);
2400 
2401  for( v = 0; v < nintvars; ++v )
2402  {
2403  var = vars[nbinvars + v]; /*lint !e613*/
2404 
2405  SCIP_CALL( printConformName(scip, varname, GMS_MAX_NAMELEN, SCIPvarGetName(var)) );
2406  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %s%s", varname, (v < nintvars - 1) ? "," : ";");
2407 
2408  appendLine(scip, file, linebuffer, &linecnt, buffer);
2409  }
2410  endLine(scip, file, linebuffer, &linecnt);
2411  SCIPinfoMessage(scip, file, "\n");
2412  }
2413 
2414  /* print variable bounds */
2415  SCIPinfoMessage(scip, file, "* Variable bounds\n");
2416  SCIP_CALL( SCIPgetBoolParam(scip, "reading/gmsreader/freeints", &freeints) );
2417  nondefbounds = FALSE;
2418 
2419  for( v = 0; v < nvars; ++v )
2420  {
2421  var = vars[v]; /*lint !e613*/
2422  assert( var != NULL );
2423 
2424  SCIP_CALL( printConformName(scip, varname, GMS_MAX_NAMELEN, SCIPvarGetName(var)) );
2425 
2426  if( transformed )
2427  {
2428  /* in case the transformed is written only local bounds are posted which are valid in the current node */
2429  lb = SCIPvarGetLbLocal(var);
2430  ub = SCIPvarGetUbLocal(var);
2431  }
2432  else
2433  {
2434  lb = SCIPvarGetLbOriginal(var);
2435  ub = SCIPvarGetUbOriginal(var);
2436  }
2437  assert( lb <= ub );
2438 
2439  /* fixed */
2440  if( SCIPisEQ(scip, lb, ub) )
2441  {
2442  if( v < nintvars )
2443  SCIPinfoMessage(scip, file, " %s.fx = %g;\n", varname, SCIPfloor(scip, lb + 0.5));
2444  else
2445  SCIPinfoMessage(scip, file, " %s.fx = %.15g;\n", varname, lb);
2446  nondefbounds = TRUE;
2447 
2448  /* no need to write lower and upper bounds additionally */
2449  continue;
2450  }
2451 
2452  /* lower bound */
2453  if( v < nbinvars + nintvars )
2454  {
2455  /* default lower bound of binaries and integers is 0 (also in recent gams versions if pf4=0 is given) */
2456  if( !SCIPisZero(scip, lb) )
2457  {
2458  if( !SCIPisInfinity(scip, -lb) )
2459  SCIPinfoMessage(scip, file, " %s.lo = %g;\n", varname, SCIPceil(scip, lb));
2460  else if( freeints )
2461  SCIPinfoMessage(scip, file, " %s.lo = -inf;\n", varname); /* -inf is allowed when running gams with pf4=0, which we assume if freeints is TRUE */
2462  else
2463  SCIPinfoMessage(scip, file, " %s.lo = %g;\n", varname, -SCIPinfinity(scip)); /* sorry, -inf not allowed in gams file here */
2464  nondefbounds = TRUE;
2465  }
2466  }
2467  else if( v >= nbinvars + nintvars && !SCIPisInfinity(scip, -lb) )
2468  {
2469  /* continuous variables are free by default */
2470  SCIPinfoMessage(scip, file, " %s.lo = %.15g;\n", varname, lb);
2471  nondefbounds = TRUE;
2472  }
2473 
2474  /* upper bound */
2475  if( v < nbinvars )
2476  {
2477  if( !SCIPisFeasEQ(scip, ub, 1.0) )
2478  {
2479  SCIPinfoMessage(scip, file, " %s.up = %g;\n", varname, SCIPfeasFloor(scip, ub));
2480  nondefbounds = TRUE;
2481  }
2482  }
2483  else if( v < nbinvars + nintvars && !freeints )
2484  {
2485  /* freeints == FALSE: integer variables have upper bound 100 by default */
2486  if( !SCIPisFeasEQ(scip, ub, 100.0) )
2487  {
2488  if( !SCIPisInfinity(scip, ub) )
2489  SCIPinfoMessage(scip, file, " %s.up = %g;\n", varname, SCIPfeasFloor(scip, ub));
2490  else
2491  SCIPinfoMessage(scip, file, " %s.up = +inf;\n", varname);
2492  nondefbounds = TRUE;
2493  }
2494  }
2495  else if( v < nbinvars + nintvars && !SCIPisInfinity(scip, ub) )
2496  {
2497  /* freeints == TRUE: integer variables have no upper bound by default */
2498  SCIPinfoMessage(scip, file, " %s.up = %g;\n", varname, SCIPfloor(scip, ub));
2499  nondefbounds = TRUE;
2500  }
2501  else if( v >= nbinvars + nintvars && !SCIPisInfinity(scip, ub) )
2502  {
2503  /* continuous variables are free by default */
2504  SCIPinfoMessage(scip, file, " %s.up = %.15g;\n", varname, ub);
2505  nondefbounds = TRUE;
2506  }
2507  }
2508 
2509  if( !nondefbounds )
2510  SCIPinfoMessage(scip, file, "* (All other bounds at default value: binary [0,1], integer [%s], continuous [-inf,+inf].)\n", freeints ? "0,+inf" : "0,100");
2511  SCIPinfoMessage(scip, file, "\n");
2512 
2513  /* print equations section */
2514  if( nconss > 0 || objvar == NULL )
2515  {
2516  SCIPinfoMessage(scip, file, "Equations\n");
2517  clearLine(linebuffer, &linecnt);
2518  }
2519  needcomma = FALSE;
2520 
2521  if( objvar == NULL )
2522  {
2523  SCIPinfoMessage(scip, file, " objequ");
2524  needcomma = TRUE;
2525  }
2526 
2527  /* declare equations */
2528  for( c = 0; c < nconss; ++c )
2529  {
2530  cons = conss[c];
2531  assert( cons != NULL );
2532 
2533  conshdlr = SCIPconsGetHdlr(cons);
2534  assert( conshdlr != NULL );
2535 
2536  SCIP_CALL( printConformName(scip, consname, GMS_MAX_NAMELEN, SCIPconsGetName(cons)) );
2537  conshdlrname = SCIPconshdlrGetName(conshdlr);
2538  assert( transformed == SCIPconsIsTransformed(cons) );
2539 
2540  rangedrow = strcmp(conshdlrname, "linear") == 0
2541  && !SCIPisInfinity(scip, -SCIPgetLhsLinear(scip, cons)) && !SCIPisInfinity(scip, SCIPgetRhsLinear(scip, cons))
2542  && !SCIPisEQ(scip, SCIPgetLhsLinear(scip, cons), SCIPgetRhsLinear(scip, cons));
2543  rangedrow = rangedrow || (strcmp(conshdlrname, "quadratic") == 0
2544  && !SCIPisInfinity(scip, -SCIPgetLhsQuadratic(scip, cons)) && !SCIPisInfinity(scip, SCIPgetRhsQuadratic(scip, cons))
2545  && !SCIPisEQ(scip, SCIPgetLhsQuadratic(scip, cons), SCIPgetRhsQuadratic(scip, cons)));
2546  rangedrow = rangedrow || (strcmp(conshdlrname, "nonlinear") == 0
2547  && !SCIPisInfinity(scip, -SCIPgetLhsNonlinear(scip, cons)) && !SCIPisInfinity(scip, SCIPgetRhsNonlinear(scip, cons))
2548  && !SCIPisEQ(scip, SCIPgetLhsNonlinear(scip, cons), SCIPgetRhsNonlinear(scip, cons)));
2549  rangedrow = rangedrow || (strcmp(conshdlrname, "abspower") == 0
2550  && !SCIPisInfinity(scip, -SCIPgetLhsAbspower(scip, cons)) && !SCIPisInfinity(scip, SCIPgetRhsAbspower(scip, cons))
2551  && !SCIPisEQ(scip, SCIPgetLhsAbspower(scip, cons), SCIPgetRhsAbspower(scip, cons)));
2552  rangedrow = rangedrow || (strcmp(conshdlrname, "bivariate") == 0
2553  && !SCIPisInfinity(scip, -SCIPgetLhsBivariate(scip, cons)) && !SCIPisInfinity(scip, SCIPgetRhsBivariate(scip, cons))
2554  && !SCIPisEQ(scip, SCIPgetLhsBivariate(scip, cons), SCIPgetRhsBivariate(scip, cons)));
2555  rangedrow = rangedrow || (strcmp(conshdlrname, "varbound") == 0
2556  && !SCIPisInfinity(scip, -SCIPgetLhsVarbound(scip, cons)) && !SCIPisInfinity(scip, SCIPgetRhsVarbound(scip, cons))
2557  && !SCIPisEQ(scip, SCIPgetLhsVarbound(scip, cons), SCIPgetRhsVarbound(scip, cons)));
2558 
2559  /* we declare only those constraints which we can print in GAMS format */
2560  if( strcmp(conshdlrname, "knapsack") != 0 && strcmp(conshdlrname, "logicor") != 0 && strcmp(conshdlrname, "setppc") != 0
2561  && strcmp(conshdlrname, "linear") != 0 && strcmp(conshdlrname, "quadratic") != 0 && strcmp(conshdlrname, "varbound") != 0
2562  && strcmp(conshdlrname, "soc") != 0 && strcmp(conshdlrname, "abspower") != 0 && strcmp(conshdlrname, "bivariate") != 0
2563  && strcmp(conshdlrname, "nonlinear") != 0 && strcmp(conshdlrname, "SOS1") != 0 && strcmp(conshdlrname, "SOS2") != 0
2564  && strcmp(conshdlrname, "indicator") != 0 )
2565  {
2566  SCIPwarningMessage(scip, "Constraint type <%s> not supported. Skip writing constraint <%s>.\n", conshdlrname, SCIPconsGetName(cons));
2567  continue;
2568  }
2569 
2570  if( needcomma )
2571  appendLine(scip, file, linebuffer, &linecnt, ",");
2572 
2573  SCIP_CALL( printConformName(scip, consname, GMS_MAX_NAMELEN, SCIPconsGetName(cons)) );
2574  if( rangedrow )
2575  {
2576  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %s%s%s%s", consname, "_lhs, ", consname, "_rhs");
2577  appendLine(scip, file, linebuffer, &linecnt, buffer);
2578  }
2579  else
2580  {
2581  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " %s", consname);
2582  appendLine(scip, file, linebuffer, &linecnt, buffer);
2583  }
2584  needcomma = TRUE;
2585  }
2586 
2587  if( nconss > 0 || objvar == NULL )
2588  {
2589  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, ";");
2590  appendLine(scip, file, linebuffer, &linecnt, buffer);
2591 
2592  endLine(scip, file, linebuffer, &linecnt);
2593  SCIPinfoMessage(scip, file, "\n");
2594  }
2595 
2596  if( objvar == NULL )
2597  {
2598  /* print objective function equation */
2599  clearLine(linebuffer, &linecnt);
2600  if( objoffset != 0.0 )
2601  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " objequ .. objvar =e= %.15g + ", objscale * objoffset);
2602  else
2603  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, " objequ .. objvar =e= ");
2604  appendLine(scip, file, linebuffer, &linecnt, buffer);
2605 
2606  SCIP_CALL( SCIPallocBufferArray(scip, &objcoeffs, nvars) );
2607 
2608  for( v = 0; v < nvars; ++v )
2609  {
2610  var = vars[v]; /*lint !e613*/
2611  assert( var != NULL );
2612 
2613  /* in case the original problem has to be posted the variables have to be either "original" or "negated" */
2614  assert( transformed || SCIPvarGetStatus(var) == SCIP_VARSTATUS_ORIGINAL || SCIPvarGetStatus(var) == SCIP_VARSTATUS_NEGATED );
2615 
2616  objcoeffs[v] = SCIPisZero(scip, SCIPvarGetObj(var)) ? 0.0 : objscale * SCIPvarGetObj(var);
2617  }
2618 
2619  SCIP_CALL( printActiveVariables(scip, file, linebuffer, &linecnt, "", ";", nvars, vars, objcoeffs, transformed) );
2620 
2621  SCIPfreeBufferArray(scip, &objcoeffs);
2622  endLine(scip, file, linebuffer, &linecnt);
2623  SCIPinfoMessage(scip, file, "\n");
2624  }
2625 
2626  /* print constraints */
2627  nlcons = FALSE;
2628  nqcons = FALSE;
2629  nsmooth = FALSE;
2630  discrete = nbinvars > 0 || nintvars > 0;
2631  indicatorsosdef = FALSE;
2632  for( c = 0; c < nconss; ++c )
2633  {
2634  cons = conss[c];
2635  assert( cons != NULL );
2636 
2637  /* in case the transformed is written, only constraints are posted which are enabled in the current node */
2638  assert(!transformed || SCIPconsIsEnabled(cons));
2639 
2640  conshdlr = SCIPconsGetHdlr(cons);
2641  assert( conshdlr != NULL );
2642 
2643  SCIP_CALL( printConformName(scip, consname, GMS_MAX_NAMELEN, SCIPconsGetName(cons)) );
2644  conshdlrname = SCIPconshdlrGetName(conshdlr);
2645  assert( transformed == SCIPconsIsTransformed(cons) );
2646 
2647  if( strcmp(conshdlrname, "knapsack") == 0 )
2648  {
2649  SCIP_Longint* weights;
2650 
2651  consvars = SCIPgetVarsKnapsack(scip, cons);
2652  nconsvars = SCIPgetNVarsKnapsack(scip, cons);
2653 
2654  /* copy Longint array to SCIP_Real array */
2655  weights = SCIPgetWeightsKnapsack(scip, cons);
2656  SCIP_CALL( SCIPallocBufferArray(scip, &consvals, nconsvars) );
2657  for( v = 0; v < nconsvars; ++v )
2658  consvals[v] = (SCIP_Real)weights[v];
2659 
2660  SCIP_CALL( printLinearCons(scip, file, consname, nconsvars, consvars, consvals,
2661  -SCIPinfinity(scip), (SCIP_Real) SCIPgetCapacityKnapsack(scip, cons), transformed) );
2662 
2663  SCIPfreeBufferArray(scip, &consvals);
2664  }
2665  else if( strcmp(conshdlrname, "linear") == 0 )
2666  {
2667  SCIP_CALL( printLinearCons(scip, file, consname,
2668  SCIPgetNVarsLinear(scip, cons), SCIPgetVarsLinear(scip, cons), SCIPgetValsLinear(scip, cons),
2669  SCIPgetLhsLinear(scip, cons), SCIPgetRhsLinear(scip, cons), transformed) );
2670  }
2671  else if( strcmp(conshdlrname, "logicor") == 0 )
2672  {
2673  SCIP_CALL( printLinearCons(scip, file, consname,
2674  SCIPgetNVarsLogicor(scip, cons), SCIPgetVarsLogicor(scip, cons), NULL,
2675  1.0, SCIPinfinity(scip), transformed) );
2676  }
2677  else if( strcmp(conshdlrname, "quadratic") == 0 )
2678  {
2679  SCIP_CALL( printQuadraticCons(scip, file, consname,
2680  SCIPgetNLinearVarsQuadratic(scip, cons), SCIPgetLinearVarsQuadratic(scip, cons), SCIPgetCoefsLinearVarsQuadratic(scip, cons),
2681  SCIPgetNQuadVarTermsQuadratic(scip, cons), SCIPgetQuadVarTermsQuadratic(scip, cons),
2682  SCIPgetNBilinTermsQuadratic(scip, cons), SCIPgetBilinTermsQuadratic(scip, cons),
2683  SCIPgetLhsQuadratic(scip, cons), SCIPgetRhsQuadratic(scip, cons), transformed) );
2684 
2685  nlcons = TRUE;
2686  }
2687  else if( strcmp(conshdlrname, "nonlinear") == 0 )
2688  {
2689  /* cons_nonlinear does not have exprtree's at hand during presolve */
2690  if( SCIPgetStage(scip) >= SCIP_STAGE_INITPRESOLVE && SCIPgetStage(scip) <= SCIP_STAGE_EXITPRESOLVE
2691  && SCIPgetExprgraphNonlinear(scip,conshdlr) != NULL )
2692  {
2693  SCIP_EXPRTREE* exprtree;
2694  SCIP_Real coef;
2695 
2696  SCIP_CALL( SCIPexprgraphGetTree(SCIPgetExprgraphNonlinear(scip,conshdlr), SCIPgetExprgraphNodeNonlinear(scip,cons), &exprtree) );
2697  coef = 1.0;
2698  SCIP_CALL( printNonlinearCons(scip, file, consname,
2699  SCIPgetNLinearVarsNonlinear(scip, cons), SCIPgetLinearVarsNonlinear(scip, cons), SCIPgetLinearCoefsNonlinear(scip, cons),
2700  1, &exprtree, &coef,
2701  SCIPgetLhsNonlinear(scip, cons), SCIPgetRhsNonlinear(scip, cons), transformed, &nsmooth) );
2702 
2703  SCIP_CALL( SCIPexprtreeFree(&exprtree) );
2704  }
2705  else
2706  {
2707  SCIP_CALL( printNonlinearCons(scip, file, consname,
2708  SCIPgetNLinearVarsNonlinear(scip, cons), SCIPgetLinearVarsNonlinear(scip, cons), SCIPgetLinearCoefsNonlinear(scip, cons),
2709  SCIPgetNExprtreesNonlinear(scip, cons), SCIPgetExprtreesNonlinear(scip, cons), SCIPgetExprtreeCoefsNonlinear(scip, cons),
2710  SCIPgetLhsNonlinear(scip, cons), SCIPgetRhsNonlinear(scip, cons), transformed, &nsmooth) );
2711  }
2712  nlcons = TRUE;
2713  nqcons = TRUE;
2714  }
2715  else if( strcmp(conshdlrname, "bivariate") == 0 )
2716  {
2717  SCIP_EXPRTREE* exprtree;
2718  SCIP_VAR* linvar;
2719  SCIP_Real lincoef;
2720  int exprdegree;
2721  SCIP_Real one;
2722 
2723  exprtree = SCIPgetExprtreeBivariate(scip, cons);
2724  assert(exprtree != NULL);
2725 
2726  linvar = SCIPgetLinearVarBivariate(scip, cons);
2727  lincoef = SCIPgetLinearCoefBivariate(scip, cons);
2728  one = 1.0;
2729  SCIP_CALL( printNonlinearCons(scip, file, consname,
2730  linvar == NULL ? 0 : 1, &linvar, &lincoef,
2731  1, &exprtree, &one,
2732  SCIPgetLhsBivariate(scip, cons), SCIPgetRhsBivariate(scip, cons), transformed, &nsmooth) );
2733 
2734  SCIP_CALL( SCIPexprtreeGetMaxDegree(exprtree, &exprdegree) );
2735  if( exprdegree > 1 )
2736  nlcons = TRUE;
2737  if( exprdegree > 2)
2738  nqcons = TRUE;
2739  }
2740  else if( strcmp(conshdlrname, "setppc") == 0 )
2741  {
2742  consvars = SCIPgetVarsSetppc(scip, cons);
2743  nconsvars = SCIPgetNVarsSetppc(scip, cons);
2744 
2745  switch( SCIPgetTypeSetppc(scip, cons) )
2746  {
2747  case SCIP_SETPPCTYPE_PARTITIONING :
2748  SCIP_CALL( printLinearCons(scip, file, consname,
2749  nconsvars, consvars, NULL, 1.0, 1.0, transformed) );
2750  break;
2751  case SCIP_SETPPCTYPE_PACKING :
2752  SCIP_CALL( printLinearCons(scip, file, consname,
2753  nconsvars, consvars, NULL, -SCIPinfinity(scip), 1.0, transformed) );
2754  break;
2755  case SCIP_SETPPCTYPE_COVERING :
2756  SCIP_CALL( printLinearCons(scip, file, consname,
2757  nconsvars, consvars, NULL, 1.0, SCIPinfinity(scip), transformed) );
2758  break;
2759  }
2760  }
2761  else if( strcmp(conshdlrname, "varbound") == 0 )
2762  {
2763  SCIP_CALL( SCIPallocBufferArray(scip, &consvars, 2) );
2764  SCIP_CALL( SCIPallocBufferArray(scip, &consvals, 2) );
2765 
2766  consvars[0] = SCIPgetVarVarbound(scip, cons);
2767  consvars[1] = SCIPgetVbdvarVarbound(scip, cons);
2768 
2769  consvals[0] = 1.0;
2770  consvals[1] = SCIPgetVbdcoefVarbound(scip, cons);
2771 
2772  SCIP_CALL( printLinearCons(scip, file, consname,
2773  2, consvars, consvals,
2774  SCIPgetLhsVarbound(scip, cons), SCIPgetRhsVarbound(scip, cons), transformed) );
2775 
2776  SCIPfreeBufferArray(scip, &consvars);
2777  SCIPfreeBufferArray(scip, &consvals);
2778  }
2779  else if( strcmp(conshdlrname, "soc") == 0 )
2780  {
2781  SCIP_CALL( printSOCCons(scip, file, consname,
2782  SCIPgetNLhsVarsSOC(scip, cons), SCIPgetLhsVarsSOC(scip, cons), SCIPgetLhsCoefsSOC(scip, cons), SCIPgetLhsOffsetsSOC(scip, cons), SCIPgetLhsConstantSOC(scip, cons),
2783  SCIPgetRhsVarSOC(scip, cons), SCIPgetRhsCoefSOC(scip, cons), SCIPgetRhsOffsetSOC(scip, cons), transformed) );
2784 
2785  nlcons = nlcons || !isGAMSprintableSOC(SCIPgetNLhsVarsSOC(scip, cons), SCIPgetLhsVarsSOC(scip, cons), SCIPgetLhsCoefsSOC(scip, cons), SCIPgetLhsOffsetsSOC(scip, cons), SCIPgetLhsConstantSOC(scip, cons),
2786  SCIPgetRhsVarSOC(scip, cons), SCIPgetRhsCoefSOC(scip, cons), SCIPgetRhsOffsetSOC(scip, cons));
2787  }
2788  else if( strcmp(conshdlrname, "indicator") == 0 )
2789  {
2790  SCIP_CALL( printIndicatorCons(scip, file, consname,
2791  SCIPgetBinaryVarIndicator(cons), SCIPgetSlackVarIndicator(cons), &indicatorsosdef,
2792  transformed) );
2793  }
2794  else if( strcmp(conshdlrname, "abspower") == 0 )
2795  {
2796  SCIP_CALL( printSignpowerCons(scip, file, consname,
2797  SCIPgetNonlinearVarAbspower(scip, cons), SCIPgetLinearVarAbspower(scip, cons),
2798  SCIPgetExponentAbspower(scip, cons), SCIPgetOffsetAbspower(scip, cons), SCIPgetCoefLinearAbspower(scip, cons),
2799  SCIPgetLhsAbspower(scip, cons), SCIPgetRhsAbspower(scip, cons), transformed, signpowerallowed, &nsmooth) );
2800 
2801  nlcons = TRUE;
2802  nqcons = TRUE;
2803  }
2804  else if( strcmp(conshdlrname, "SOS1") == 0 )
2805  {
2806  SCIP_CALL( printSOSCons(scip, file, consname,
2807  SCIPgetNVarsSOS1(scip, cons), SCIPgetVarsSOS1(scip, cons), 1,
2808  transformed) );
2809  discrete = TRUE;
2810  }
2811  else if( strcmp(conshdlrname, "SOS2") == 0 )
2812  {
2813  SCIP_CALL( printSOSCons(scip, file, consname,
2814  SCIPgetNVarsSOS2(scip, cons), SCIPgetVarsSOS2(scip, cons), 2,
2815  transformed) );
2816  discrete = TRUE;
2817  }
2818  else
2819  {
2820  SCIPwarningMessage(scip, "constraint handler <%s> cannot print requested format\n", conshdlrname );
2821  SCIPinfoMessage(scip, file, "* ");
2822  SCIP_CALL( SCIPprintCons(scip, cons, file) );
2823  SCIPinfoMessage(scip, file, ";\n");
2824  }
2825 
2826  SCIPinfoMessage(scip, file, "\n");
2827  }
2828  /* if at most quadratic, then cannot have nonsmooth functions */
2829  assert(nlcons || !nsmooth);
2830 
2831  /* print model creation */
2832  SCIPinfoMessage(scip, file, "Model m / all /;\n\n");
2833 
2834  /* set some options to reduce listing file size */
2835  SCIPinfoMessage(scip, file, "option limrow = 0;\n");
2836  SCIPinfoMessage(scip, file, "option limcol = 0;\n\n");
2837 
2838  /* print solve command */
2839  (void) SCIPsnprintf(buffer, GMS_MAX_PRINTLEN, "%s%s",
2840  discrete ? "MI" : "", nlcons ? (nqcons ? ((nsmooth && !discrete) ? "DNLP" : "NLP") : "QCP") : (discrete > 0 ? "P" : "LP"));
2841 
2842  if( objvar != NULL )
2843  {
2844  SCIP_CALL( printConformName(scip, varname, GMS_MAX_NAMELEN, SCIPvarGetName(objvar)) );
2845  }
2846 
2847  SCIPinfoMessage(scip, file, "$if not set %s $set %s %s\n", buffer, buffer, buffer);
2848  SCIPinfoMessage(scip, file, "Solve m using %%%s%% %simizing %s;\n",
2849  buffer, objsense == SCIP_OBJSENSE_MINIMIZE ? "min" : "max", objvar != NULL ? varname : "objvar");
2850 
2851  *result = SCIP_SUCCESS;
2852 
2853  return SCIP_OKAY;
2854 }
SCIP_RESULT
enum SCIP_Result SCIP_RESULT
Definition: type_result.h:52
SCIPisEQ
SCIP_Bool SCIPisEQ(SCIP *scip, SCIP_Real val1, SCIP_Real val2)
Definition: scip_numerics.c:438
SCIPround
SCIP_Real SCIPround(SCIP *scip, SCIP_Real val)
Definition: scip_numerics.c:648
SCIPreaderGetName
SCIP_EXPORT const char * SCIPreaderGetName(SCIP_READER *reader)
Definition: reader.c:548
SCIP_DIDNOTRUN
Definition: type_result.h:33
GMS_MAX_LINELEN
#define GMS_MAX_LINELEN
Definition: reader_gms.c:78
SCIPisPositive
SCIP_Bool SCIPisPositive(SCIP *scip, SCIP_Real val)
Definition: scip_numerics.c:563
SCIP_DECL_READERWRITE
static SCIP_DECL_READERWRITE(readerWriteGms)
Definition: reader_gms.c:2167
SCIP_EXPR_SIN
Definition: type_expr.h:57
SCIPconsIsEnabled
SCIP_Bool SCIPconsIsEnabled(SCIP_CONS *cons)
Definition: cons.c:8174
SCIPisIntegral
SCIP_Bool SCIPisIntegral(SCIP *scip, SCIP_Real val)
Definition: scip_numerics.c:587
printNonlinearRow
static SCIP_RETCODE printNonlinearRow(SCIP *scip, FILE *file, const char *rowname, const char *rownameextension, const char *type, int nlinvars, SCIP_VAR **linvars, SCIP_Real *lincoeffs, int nexprtrees, SCIP_EXPRTREE **exprtrees, SCIP_Real *exprtreecoefs, SCIP_Real rhs, SCIP_Bool transformed, SCIP_Bool *nsmooth)
Definition: reader_gms.c:1770
SCIPvarIsNegated
SCIP_EXPORT SCIP_Bool SCIPvarIsNegated(SCIP_VAR *var)
Definition: var.c:17172
SCIPgetLinearCoefBivariate
SCIP_Real SCIPgetLinearCoefBivariate(SCIP *scip, SCIP_CONS *cons)
Definition: cons_bivariate.c:8073
printSignpowerCons
static SCIP_RETCODE printSignpowerCons(SCIP *scip, FILE *file, const char *rowname, SCIP_VAR *nonlinvar, SCIP_VAR *linvar, SCIP_Real exponent, SCIP_Real offset, SCIP_Real coeflinear, SCIP_Real lhs, SCIP_Real rhs, SCIP_Bool transformed, SCIP_Bool signpowerallowed, SCIP_Bool *nsmooth)
Definition: reader_gms.c:1321
SCIP_BilinTerm::var2
SCIP_VAR * var2
Definition: cons_quadratic.h:124
scip_param.h
public methods for SCIP parameter handling
SCIP_Reader
Definition: struct_reader.h:36
SCIP_EXPR_TAN
Definition: type_expr.h:59
SCIPgetLhsLinear
SCIP_Real SCIPgetLhsLinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_linear.c:18334
SCIPgetExprtreeCoefsNonlinear
SCIP_Real * SCIPgetExprtreeCoefsNonlinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_nonlinear.c:9857
SCIPgetNonlinearVarAbspower
SCIP_VAR * SCIPgetNonlinearVarAbspower(SCIP *scip, SCIP_CONS *cons)
Definition: cons_abspower.c:7421
SCIPexprGetMonomialChildIndices
int * SCIPexprGetMonomialChildIndices(SCIP_EXPRDATA_MONOMIAL *monomial)
Definition: expr.c:5924
SCIP_VARSTATUS_ORIGINAL
Definition: type_var.h:40
cons_varbound.h
Constraint handler for variable bound constraints .
SCIPgetNVarsSOS2
int SCIPgetNVarsSOS2(SCIP *scip, SCIP_CONS *cons)
Definition: cons_sos2.c:2501
SCIP_EXPR_PRODUCT
Definition: type_expr.h:72
SCIPgetBilinTermsQuadratic
SCIP_BILINTERM * SCIPgetBilinTermsQuadratic(SCIP *scip, SCIP_CONS *cons)
Definition: cons_quadratic.c:15112
scip_mem.h
public methods for memory management
SCIP_EXPR_SIGN
Definition: type_expr.h:65
printExpr
static SCIP_RETCODE printExpr(SCIP *scip, FILE *file, char *linebuffer, int *linecnt, SCIP_Bool *nsmooth, SCIP_Bool transformed, SCIP_EXPR *expr, SCIP_VAR **exprvars)
Definition: reader_gms.c:1370
SCIPexprGetOperator
SCIP_EXPROP SCIPexprGetOperator(SCIP_EXPR *expr)
Definition: expr.c:5697
SCIPgetVarsSOS1
SCIP_VAR ** SCIPgetVarsSOS1(SCIP *scip, SCIP_CONS *cons)
Definition: cons_sos1.c:10605
SCIP_MAXSTRLEN
#define SCIP_MAXSTRLEN
Definition: def.h:273
SCIP_BilinTerm::var1
SCIP_VAR * var1
Definition: cons_quadratic.h:123
SCIPwarningMessage
void SCIPwarningMessage(SCIP *scip, const char *formatstr,...)
Definition: scip_message.c:123
isGAMSprintableSOC
static SCIP_Bool isGAMSprintableSOC(int nlhsvars, SCIP_VAR **lhsvars, SCIP_Real *lhscoeffs, SCIP_Real *lhsoffsets, SCIP_Real lhsconstant, SCIP_VAR *rhsvar, SCIP_Real rhscoef, SCIP_Real rhsoffset)
Definition: reader_gms.c:787
SCIP_SUCCESS
Definition: type_result.h:49
READER_DESC
#define READER_DESC
Definition: reader_gms.c:73
SCIP_SETPPCTYPE_COVERING
Definition: cons_setppc.h:80
SCIPexpropGetName
const char * SCIPexpropGetName(SCIP_EXPROP op)
Definition: expr.c:3265
SCIPgetNExprtreesNonlinear
int SCIPgetNExprtreesNonlinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_nonlinear.c:9829
SCIPgetRhsAbspower
SCIP_Real SCIPgetRhsAbspower(SCIP *scip, SCIP_CONS *cons)
Definition: cons_abspower.c:7523
SCIP_EXPR_QUADRATIC
Definition: type_expr.h:74
SCIPexprtreeGetMaxDegree
SCIP_RETCODE SCIPexprtreeGetMaxDegree(SCIP_EXPRTREE *tree, int *maxdegree)
Definition: expr.c:8714
SCIPgetCoefLinearAbspower
SCIP_Real SCIPgetCoefLinearAbspower(SCIP *scip, SCIP_CONS *cons)
Definition: cons_abspower.c:7489
SCIP_Var
Definition: struct_var.h:198
clearLine
static void clearLine(char *linebuffer, int *linecnt)
Definition: reader_gms.c:137
SCIPgetExprtreesNonlinear
SCIP_EXPRTREE ** SCIPgetExprtreesNonlinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_nonlinear.c:9843
SCIPgetBoolParam
SCIP_RETCODE SCIPgetBoolParam(SCIP *scip, const char *name, SCIP_Bool *value)
Definition: scip_param.c:241
cons_indicator.h
constraint handler for indicator constraints
SCIPexprGetRealPowerExponent
SCIP_Real SCIPexprGetRealPowerExponent(SCIP_EXPR *expr)
Definition: expr.c:5760
SCIPexprGetOpIndex
int SCIPexprGetOpIndex(SCIP_EXPR *expr)
Definition: expr.c:5727
SCIPgetNVarsKnapsack
int SCIPgetNVarsKnapsack(SCIP *scip, SCIP_CONS *cons)
Definition: cons_knapsack.c:13607
SCIPvarIsBinary
SCIP_EXPORT SCIP_Bool SCIPvarIsBinary(SCIP_VAR *var)
Definition: var.c:17197
SCIP_QuadVarTerm
Definition: cons_quadratic.h:104
SCIPexprGetPolynomialConstant
SCIP_Real SCIPexprGetPolynomialConstant(SCIP_EXPR *expr)
Definition: expr.c:5892
SCIPsetReaderRead
SCIP_RETCODE SCIPsetReaderRead(SCIP *scip, SCIP_READER *reader, SCIP_DECL_READERREAD((*readerread)))
Definition: scip_reader.c:186
SCIPgetRhsCoefSOC
SCIP_Real SCIPgetRhsCoefSOC(SCIP *scip, SCIP_CONS *cons)
Definition: cons_soc.c:5548
FALSE
#define FALSE
Definition: def.h:73
SCIPgetLhsQuadratic
SCIP_Real SCIPgetLhsQuadratic(SCIP *scip, SCIP_CONS *cons)
Definition: cons_quadratic.c:15125
SCIPvarGetObj
SCIP_EXPORT SCIP_Real SCIPvarGetObj(SCIP_VAR *var)
Definition: var.c:17515
SCIPgetQuadVarTermsQuadratic
SCIP_QUADVARTERM * SCIPgetQuadVarTermsQuadratic(SCIP *scip, SCIP_CONS *cons)
Definition: cons_quadratic.c:15047
SCIP_EXPR_MIN
Definition: type_expr.h:62
SCIPsetReaderCopy
SCIP_RETCODE SCIPsetReaderCopy(SCIP *scip, SCIP_READER *reader, SCIP_DECL_READERCOPY((*readercopy)))
Definition: scip_reader.c:138
SCIP_EXPR_LINEAR
Definition: type_expr.h:73
SCIPvarGetType
SCIP_EXPORT SCIP_VARTYPE SCIPvarGetType(SCIP_VAR *var)
Definition: var.c:17182
TRUE
#define TRUE
Definition: def.h:72
SCIP_RETCODE
enum SCIP_Retcode SCIP_RETCODE
Definition: type_retcode.h:54
SCIPgetRhsBivariate
SCIP_Real SCIPgetRhsBivariate(SCIP *scip, SCIP_CONS *cons)
Definition: cons_bivariate.c:8109
GMS_DEFAULT_INDICATORREFORM
#define GMS_DEFAULT_INDICATORREFORM
Definition: reader_gms.c:83
SCIPgetRhsNonlinear
SCIP_Real SCIPgetRhsNonlinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_nonlinear.c:9897
SCIPgetLhsBivariate
SCIP_Real SCIPgetLhsBivariate(SCIP *scip, SCIP_CONS *cons)
Definition: cons_bivariate.c:8097
printConformName
static SCIP_RETCODE printConformName(SCIP *scip, char *t, int len, const char *name)
Definition: reader_gms.c:249
SCIP_SETPPCTYPE_PACKING
Definition: cons_setppc.h:79
SCIPgetVarsSetppc
SCIP_VAR ** SCIPgetVarsSetppc(SCIP *scip, SCIP_CONS *cons)
Definition: cons_setppc.c:9273
SCIPvarIsActive
SCIP_EXPORT SCIP_Bool SCIPvarIsActive(SCIP_VAR *var)
Definition: var.c:17340
pub_var.h
public methods for problem variables
SCIPaddBoolParam
SCIP_RETCODE SCIPaddBoolParam(SCIP *scip, const char *name, const char *desc, SCIP_Bool *valueptr, SCIP_Bool isadvanced, SCIP_Bool defaultvalue, SCIP_DECL_PARAMCHGD((*paramchgd)), SCIP_PARAMDATA *paramdata)
Definition: scip_param.c:48
SCIPceil
SCIP_Real SCIPceil(SCIP *scip, SCIP_Real val)
Definition: scip_numerics.c:636
SCIP_QuadElement
Definition: type_expr.h:100
SCIP_EXPR_CONST
Definition: type_expr.h:40
SCIPvarGetStatus
SCIP_EXPORT SCIP_VARSTATUS SCIPvarGetStatus(SCIP_VAR *var)
Definition: var.c:17136
printSignpowerRow
static SCIP_RETCODE printSignpowerRow(SCIP *scip, FILE *file, const char *rowname, const char *rownameextension, const char *type, SCIP_VAR *nonlinvar, SCIP_VAR *linvar, SCIP_Real exponent, SCIP_Real offset, SCIP_Real coeflinear, SCIP_Real rhs, SCIP_Bool transformed, SCIP_Bool signpowerallowed, SCIP_Bool *nsmooth)
Definition: reader_gms.c:1117
SCIPduplicateBufferArray
#define SCIPduplicateBufferArray(scip, ptr, source, num)
Definition: scip_mem.h:119
SCIPgetWeightsKnapsack
SCIP_Longint * SCIPgetWeightsKnapsack(SCIP *scip, SCIP_CONS *cons)
Definition: cons_knapsack.c:13653
SCIP_VERBLEVEL_FULL
Definition: type_message.h:46
cons_soc.h
constraint handler for second order cone constraints
SCIPfreeBufferArray
#define SCIPfreeBufferArray(scip, ptr)
Definition: scip_mem.h:123
cons_setppc.h
Constraint handler for the set partitioning / packing / covering constraints .
SCIPgetNVarsSOS1
int SCIPgetNVarsSOS1(SCIP *scip, SCIP_CONS *cons)
Definition: cons_sos1.c:10580
SCIPgetValsLinear
SCIP_Real * SCIPgetValsLinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_linear.c:18469
scip_var.h
public methods for SCIP variables
SCIPdebugMsg
#define SCIPdebugMsg
Definition: scip_message.h:69
SCIPgetExprtreeBivariate
SCIP_EXPRTREE * SCIPgetExprtreeBivariate(SCIP *scip, SCIP_CONS *cons)
Definition: cons_bivariate.c:8085
SCIP_EXPR_EXP
Definition: type_expr.h:55
SCIPgetLhsCoefsSOC
SCIP_Real * SCIPgetLhsCoefsSOC(SCIP *scip, SCIP_CONS *cons)
Definition: cons_soc.c:5496
SCIP_EXPR_PLUS
Definition: type_expr.h:46
SCIPgetNQuadVarTermsQuadratic
int SCIPgetNQuadVarTermsQuadratic(SCIP *scip, SCIP_CONS *cons)
Definition: cons_quadratic.c:15032
checkVarnames
static SCIP_RETCODE checkVarnames(SCIP *scip, SCIP_VAR **vars, int nvars)
Definition: reader_gms.c:1899
SCIPgetRhsOffsetSOC
SCIP_Real SCIPgetRhsOffsetSOC(SCIP *scip, SCIP_CONS *cons)
Definition: cons_soc.c:5561
SCIPisInfinity
SCIP_Bool SCIPisInfinity(SCIP *scip, SCIP_Real val)
Definition: scip_numerics.c:514
SCIPgetCharParam
SCIP_RETCODE SCIPgetCharParam(SCIP *scip, const char *name, char *value)
Definition: scip_param.c:317
scip_numerics.h
public methods for numerical tolerances
SCIPexprGetMonomials
SCIP_EXPRDATA_MONOMIAL ** SCIPexprGetMonomials(SCIP_EXPR *expr)
Definition: expr.c:5868
appendLineWithIndent
static void appendLineWithIndent(SCIP *scip, FILE *file, char *linebuffer, int *linecnt, const char *extension)
Definition: reader_gms.c:208
pub_expr.h
public methods for expressions, expression trees, expression graphs, and related stuff ...
SCIPgetRhsVarSOC
SCIP_VAR * SCIPgetRhsVarSOC(SCIP *scip, SCIP_CONS *cons)
Definition: cons_soc.c:5535
SCIPexprGetMonomialNFactors
int SCIPexprGetMonomialNFactors(SCIP_EXPRDATA_MONOMIAL *monomial)
Definition: expr.c:5914
SCIPexprGetIntPowerExponent
int SCIPexprGetIntPowerExponent(SCIP_EXPR *expr)
Definition: expr.c:5771
SCIPsetReaderWrite
SCIP_RETCODE SCIPsetReaderWrite(SCIP *scip, SCIP_READER *reader, SCIP_DECL_READERWRITE((*readerwrite)))
Definition: scip_reader.c:210
SCIPgetNegatedVar
SCIP_RETCODE SCIPgetNegatedVar(SCIP *scip, SCIP_VAR *var, SCIP_VAR **negvar)
Definition: scip_var.c:1531
SCIP_EXPR_MINUS
Definition: type_expr.h:47
SCIP_EXPR_DIV
Definition: type_expr.h:49
pub_cons.h
public methods for managing constraints
cons_knapsack.h
Constraint handler for knapsack constraints of the form , x binary and .
checkConsnames
static SCIP_RETCODE checkConsnames(SCIP *scip, SCIP_CONS **conss, int nconss, SCIP_Bool transformed)
Definition: reader_gms.c:1958
SCIP_EXPR_INTPOWER
Definition: type_expr.h:53
SCIPgetProbvarLinearSum
SCIP_RETCODE SCIPgetProbvarLinearSum(SCIP *scip, SCIP_VAR **vars, SCIP_Real *scalars, int *nvars, int varssize, SCIP_Real *constant, int *requiredsize, SCIP_Bool mergemultiples)
Definition: scip_var.c:1742
conformName
static void conformName(char *name)
Definition: reader_gms.c:225
SCIPgetVarVarbound
SCIP_VAR * SCIPgetVarVarbound(SCIP *scip, SCIP_CONS *cons)
Definition: cons_varbound.c:5173
SCIPgetSlackVarIndicator
SCIP_VAR * SCIPgetSlackVarIndicator(SCIP_CONS *cons)
Definition: cons_indicator.c:7961
SCIPvarGetName
SCIP_EXPORT const char * SCIPvarGetName(SCIP_VAR *var)
Definition: var.c:17017
SCIP_EXPR_SQRT
Definition: type_expr.h:51
SCIP_READERROR
Definition: type_retcode.h:36
SCIP_Cons
Definition: struct_cons.h:37
SCIPerrorMessage
#define SCIPerrorMessage
Definition: pub_message.h:55
SCIPgetLinearVarAbspower
SCIP_VAR * SCIPgetLinearVarAbspower(SCIP *scip, SCIP_CONS *cons)
Definition: cons_abspower.c:7438
SCIPgetNLhsVarsSOC
int SCIPgetNLhsVarsSOC(SCIP *scip, SCIP_CONS *cons)
Definition: cons_soc.c:5470
SCIPexprGetQuadLinearCoefs
SCIP_Real * SCIPexprGetQuadLinearCoefs(SCIP_EXPR *expr)
Definition: expr.c:5844
SCIP_Conshdlr
Definition: struct_cons.h:117
SCIPgetRhsVarbound
SCIP_Real SCIPgetRhsVarbound(SCIP *scip, SCIP_CONS *cons)
Definition: cons_varbound.c:5150
SCIPisFeasEQ
SCIP_Bool SCIPisFeasEQ(SCIP *scip, SCIP_Real val1, SCIP_Real val2)
Definition: scip_numerics.c:773
cons_logicor.h
Constraint handler for logicor constraints (equivalent to set covering, but algorithms are suited fo...
SCIP_EXPR_REALPOWER
Definition: type_expr.h:52
SCIPgetVbdcoefVarbound
SCIP_Real SCIPgetVbdcoefVarbound(SCIP *scip, SCIP_CONS *cons)
Definition: cons_varbound.c:5219
SCIPgetBinaryVarIndicator
SCIP_VAR * SCIPgetBinaryVarIndicator(SCIP_CONS *cons)
Definition: cons_indicator.c:7870
SCIPgetLhsConstantSOC
SCIP_Real SCIPgetLhsConstantSOC(SCIP *scip, SCIP_CONS *cons)
Definition: cons_soc.c:5522
SCIPincludeReaderGms
SCIP_RETCODE SCIPincludeReaderGms(SCIP *scip)
Definition: reader_gms.c:2194
SCIPgetRhsLinear
SCIP_Real SCIPgetRhsLinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_linear.c:18358
SCIPisZero
SCIP_Bool SCIPisZero(SCIP *scip, SCIP_Real val)
Definition: scip_numerics.c:551
SCIPwriteGms
SCIP_RETCODE SCIPwriteGms(SCIP *scip, FILE *file, const char *name, SCIP_Bool transformed, SCIP_OBJSENSE objsense, SCIP_Real objscale, SCIP_Real objoffset, SCIP_VAR **vars, int nvars, int nbinvars, int nintvars, int nimplvars, int ncontvars, SCIP_CONS **conss, int nconss, SCIP_RESULT *result)
Definition: reader_gms.c:2237
SCIPexprGetQuadConstant
SCIP_Real SCIPexprGetQuadConstant(SCIP_EXPR *expr)
Definition: expr.c:5831
printQuadraticRow
static SCIP_RETCODE printQuadraticRow(SCIP *scip, FILE *file, const char *rowname, const char *rownameextension, const char *type, int nlinvars, SCIP_VAR **linvars, SCIP_Real *lincoeffs, int nquadvarterms, SCIP_QUADVARTERM *quadvarterms, int nbilinterms, SCIP_BILINTERM *bilinterms, SCIP_Real rhs, SCIP_Bool transformed)
Definition: reader_gms.c:603
SCIP_DECL_READERCOPY
static SCIP_DECL_READERCOPY(readerCopyGms)
Definition: reader_gms.c:2051
cons_quadratic.h
constraint handler for quadratic constraints
NULL
#define NULL
Definition: lpi_spx1.cpp:155
SCIPsetReaderFree
SCIP_RETCODE SCIPsetReaderFree(SCIP *scip, SCIP_READER *reader, SCIP_DECL_READERFREE((*readerfree)))
Definition: scip_reader.c:162
printActiveVariables
static SCIP_RETCODE printActiveVariables(SCIP *scip, FILE *file, char *linebuffer, int *linecnt, const char *prefix, const char *suffix, int nvars, SCIP_VAR **vars, SCIP_Real *vals, SCIP_Bool transformed)
Definition: reader_gms.c:274
SCIPgetVbdvarVarbound
SCIP_VAR * SCIPgetVbdvarVarbound(SCIP *scip, SCIP_CONS *cons)
Definition: cons_varbound.c:5196
SCIP_OKAY
Definition: type_retcode.h:33
SCIP_SETPPCTYPE_PARTITIONING
Definition: cons_setppc.h:78
SCIP_CALL
#define SCIP_CALL(x)
Definition: def.h:364
SCIPgetLhsOffsetsSOC
SCIP_Real * SCIPgetLhsOffsetsSOC(SCIP *scip, SCIP_CONS *cons)
Definition: cons_soc.c:5509
GMS_MAX_NAMELEN
#define GMS_MAX_NAMELEN
Definition: reader_gms.c:80
getActiveVariables
static SCIP_RETCODE getActiveVariables(SCIP *scip, SCIP_VAR **vars, SCIP_Real *scalars, int *nvars, SCIP_Real *constant, SCIP_Bool transformed)
Definition: reader_gms.c:94
SCIPgetLinearVarsQuadratic
SCIP_VAR ** SCIPgetLinearVarsQuadratic(SCIP *scip, SCIP_CONS *cons)
Definition: cons_quadratic.c:15003
SCIPfeasFloor
SCIP_Real SCIPfeasFloor(SCIP *scip, SCIP_Real val)
Definition: scip_numerics.c:898
printNonlinearCons
static SCIP_RETCODE printNonlinearCons(SCIP *scip, FILE *file, const char *rowname, int nlinvars, SCIP_VAR **linvars, SCIP_Real *lincoeffs, int nexprtrees, SCIP_EXPRTREE **exprtrees, SCIP_Real *exprtreecoefs, SCIP_Real lhs, SCIP_Real rhs, SCIP_Bool transformed, SCIP_Bool *nsmooth)
Definition: reader_gms.c:1850
SCIPexprtreeGetRoot
SCIP_EXPR * SCIPexprtreeGetRoot(SCIP_EXPRTREE *tree)
Definition: expr.c:8606
scip_cons.h
public methods for constraint handler plugins and constraints
pub_nlp.h
public methods for NLP management
SCIP_ERROR
Definition: type_retcode.h:34
SCIPgetRealParam
SCIP_RETCODE SCIPgetRealParam(SCIP *scip, const char *name, SCIP_Real *value)
Definition: scip_param.c:298
GMS_MAX_PRINTLEN
#define GMS_MAX_PRINTLEN
Definition: reader_gms.c:79
SCIP_Expr
Definition: struct_expr.h:46
SCIPgetVarsLogicor
SCIP_VAR ** SCIPgetVarsLogicor(SCIP *scip, SCIP_CONS *cons)
Definition: cons_logicor.c:5347
SCIPgetNLinearVarsNonlinear
int SCIPgetNLinearVarsNonlinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_nonlinear.c:9790
SCIPallocBufferArray
#define SCIPallocBufferArray(scip, ptr, num)
Definition: scip_mem.h:111
SCIPinfinity
SCIP_Real SCIPinfinity(SCIP *scip)
Definition: scip_numerics.c:503
pub_misc.h
public data structures and miscellaneous methods
SCIPexprGetChildren
SCIP_EXPR ** SCIPexprGetChildren(SCIP_EXPR *expr)
Definition: expr.c:5717
SCIPexprGetSignPowerExponent
SCIP_Real SCIPexprGetSignPowerExponent(SCIP_EXPR *expr)
Definition: expr.c:5782
SCIP_Bool
#define SCIP_Bool
Definition: def.h:70
SCIP_EXPR_VARIDX
Definition: type_expr.h:39
SCIP_VARTYPE_IMPLINT
Definition: type_var.h:55
SCIPgetVerbLevel
SCIP_VERBLEVEL SCIPgetVerbLevel(SCIP *scip)
Definition: scip_message.c:240
GMS_DEFAULT_SIGNPOWER
#define GMS_DEFAULT_SIGNPOWER
Definition: reader_gms.c:84
endLine
static void endLine(SCIP *scip, FILE *file, char *linebuffer, int *linecnt)
Definition: reader_gms.c:151
SCIP_OBJSENSE
enum SCIP_Objsense SCIP_OBJSENSE
Definition: type_prob.h:41
READER_EXTENSION
#define READER_EXTENSION
Definition: reader_gms.c:75
SCIPvarGetUbGlobal
SCIP_EXPORT SCIP_Real SCIPvarGetUbGlobal(SCIP_VAR *var)
Definition: var.c:17677
SCIPprintCons
SCIP_RETCODE SCIPprintCons(SCIP *scip, SCIP_CONS *cons, FILE *file)
Definition: scip_cons.c:2473
cons_nonlinear.h
constraint handler for nonlinear constraints
SCIP_VARSTATUS_NEGATED
Definition: type_var.h:46
SCIPgetNVarsLinear
int SCIPgetNVarsLinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_linear.c:18421
SCIPexprGetNChildren
int SCIPexprGetNChildren(SCIP_EXPR *expr)
Definition: expr.c:5707
SCIP_BilinTerm
Definition: cons_quadratic.h:121
SCIPisNegative
SCIP_Bool SCIPisNegative(SCIP *scip, SCIP_Real val)
Definition: scip_numerics.c:575
SCIPconsIsTransformed
SCIP_Bool SCIPconsIsTransformed(SCIP_CONS *cons)
Definition: cons.c:8386
SCIPgetVarsKnapsack
SCIP_VAR ** SCIPgetVarsKnapsack(SCIP *scip, SCIP_CONS *cons)
Definition: cons_knapsack.c:13630
SCIPexprtreeFree
SCIP_RETCODE SCIPexprtreeFree(SCIP_EXPRTREE **tree)
Definition: expr.c:8856
SCIP_STAGE_EXITPRESOLVE
Definition: type_set.h:41
SCIPincludeReaderBasic
SCIP_RETCODE SCIPincludeReaderBasic(SCIP *scip, SCIP_READER **readerptr, const char *name, const char *desc, const char *extension, SCIP_READERDATA *readerdata)
Definition: scip_reader.c:100
SCIP_EXPR_COS
Definition: type_expr.h:58
SCIPexprtreeGetVars
SCIP_VAR ** SCIPexprtreeGetVars(SCIP_EXPRTREE *tree)
Definition: nlp.c:103
SCIPgetLhsNonlinear
SCIP_Real SCIPgetLhsNonlinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_nonlinear.c:9884
SCIP_EXPR_ABS
Definition: type_expr.h:64
SCIPgetOffsetAbspower
SCIP_Real SCIPgetOffsetAbspower(SCIP *scip, SCIP_CONS *cons)
Definition: cons_abspower.c:7472
cons_bivariate.h
constraint handler for bivariate nonlinear constraints
cons_linear.h
Constraint handler for linear constraints in their most general form, .
SCIPvarGetLbOriginal
SCIP_EXPORT SCIP_Real SCIPvarGetLbOriginal(SCIP_VAR *var)
Definition: var.c:17613
SCIPgetLinearCoefsNonlinear
SCIP_Real * SCIPgetLinearCoefsNonlinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_nonlinear.c:9816
SCIP_ExprData_Monomial
Definition: struct_expr.h:89
SCIPexprGetMonomialCoef
SCIP_Real SCIPexprGetMonomialCoef(SCIP_EXPRDATA_MONOMIAL *monomial)
Definition: expr.c:5904
cons_abspower.h
Constraint handler for absolute power constraints .
SCIPvarGetLbLocal
SCIP_EXPORT SCIP_Real SCIPvarGetLbLocal(SCIP_VAR *var)
Definition: var.c:17723
SCIPaddRealParam
SCIP_RETCODE SCIPaddRealParam(SCIP *scip, const char *name, const char *desc, SCIP_Real *valueptr, SCIP_Bool isadvanced, SCIP_Real defaultvalue, SCIP_Real minvalue, SCIP_Real maxvalue, SCIP_DECL_PARAMCHGD((*paramchgd)), SCIP_PARAMDATA *paramdata)
Definition: scip_param.c:130
printIndicatorCons
static SCIP_RETCODE printIndicatorCons(SCIP *scip, FILE *file, const char *rowname, SCIP_VAR *z, SCIP_VAR *s, SCIP_Bool *sossetdeclr, SCIP_Bool transformed)
Definition: reader_gms.c:932
SCIP_EXPR_MAX
Definition: type_expr.h:63
appendLine
static void appendLine(SCIP *scip, FILE *file, char *linebuffer, int *linecnt, const char *extension)
Definition: reader_gms.c:174
SCIP_REAL_MAX
#define SCIP_REAL_MAX
Definition: def.h:164
SCIP_STAGE_INITPRESOLVE
Definition: type_set.h:39
badchars
static const char badchars[]
Definition: reader_gms.c:90
SCIPfloor
SCIP_Real SCIPfloor(SCIP *scip, SCIP_Real val)
Definition: scip_numerics.c:624
reader_gms.h
GAMS file reader and writer.
SCIPvarGetUbLocal
SCIP_EXPORT SCIP_Real SCIPvarGetUbLocal(SCIP_VAR *var)
Definition: var.c:17733
GMS_DEFAULT_BIGM
#define GMS_DEFAULT_BIGM
Definition: reader_gms.c:82
scip_general.h
general public methods
SCIPgetExponentAbspower
SCIP_Real SCIPgetExponentAbspower(SCIP *scip, SCIP_CONS *cons)
Definition: cons_abspower.c:7455
SCIPgetVarsSOS2
SCIP_VAR ** SCIPgetVarsSOS2(SCIP *scip, SCIP_CONS *cons)
Definition: cons_sos2.c:2526
SCIPexprGetLinearCoefs
SCIP_Real * SCIPexprGetLinearCoefs(SCIP_EXPR *expr)
Definition: expr.c:5793
scalars
static const SCIP_Real scalars[]
Definition: lp.c:5731
SCIPexprGetOpReal
SCIP_Real SCIPexprGetOpReal(SCIP_EXPR *expr)
Definition: expr.c:5738
READER_NAME
#define READER_NAME
Definition: reader_gms.c:69
SCIPgetNVarsLogicor
int SCIPgetNVarsLogicor(SCIP *scip, SCIP_CONS *cons)
Definition: cons_logicor.c:5324
SCIPgetNLinearVarsQuadratic
int SCIPgetNLinearVarsQuadratic(SCIP *scip, SCIP_CONS *cons)
Definition: cons_quadratic.c:14988
SCIPvarGetLbGlobal
SCIP_EXPORT SCIP_Real SCIPvarGetLbGlobal(SCIP_VAR *var)
Definition: var.c:17667
SCIPgetExprgraphNonlinear
SCIP_EXPRGRAPH * SCIPgetExprgraphNonlinear(SCIP *scip, SCIP_CONSHDLR *conshdlr)
Definition: cons_nonlinear.c:10086
printSOSCons
static SCIP_RETCODE printSOSCons(SCIP *scip, FILE *file, const char *rowname, int nvars, SCIP_VAR **vars, int sostype, SCIP_Bool transformed)
Definition: reader_gms.c:1060
SCIPexprGetQuadElements
SCIP_QUADELEM * SCIPexprGetQuadElements(SCIP_EXPR *expr)
Definition: expr.c:5819
SCIPgetNBilinTermsQuadratic
int SCIPgetNBilinTermsQuadratic(SCIP *scip, SCIP_CONS *cons)
Definition: cons_quadratic.c:15097
pub_message.h
public methods for message output
printLinearCons
static SCIP_RETCODE printLinearCons(SCIP *scip, FILE *file, const char *rowname, int nvars, SCIP_VAR **vars, SCIP_Real *vals, SCIP_Real lhs, SCIP_Real rhs, SCIP_Bool transformed)
Definition: reader_gms.c:515
SCIPexprGetNMonomials
int SCIPexprGetNMonomials(SCIP_EXPR *expr)
Definition: expr.c:5880
SCIPsnprintf
int SCIPsnprintf(char *t, int len, const char *s,...)
Definition: misc.c:10604
SCIPgetNVarsSetppc
int SCIPgetNVarsSetppc(SCIP *scip, SCIP_CONS *cons)
Definition: cons_setppc.c:9250
printQuadraticCons
static SCIP_RETCODE printQuadraticCons(SCIP *scip, FILE *file, const char *rowname, int nlinvars, SCIP_VAR **linvars, SCIP_Real *lincoeffs, int nquadvarterms, SCIP_QUADVARTERM *quadvarterms, int nbilinterms, SCIP_BILINTERM *bilinterms, SCIP_Real lhs, SCIP_Real rhs, SCIP_Bool transformed)
Definition: reader_gms.c:722
SCIPconsGetName
const char * SCIPconsGetName(SCIP_CONS *cons)
Definition: cons.c:8077
SCIPexprgraphGetTree
SCIP_RETCODE SCIPexprgraphGetTree(SCIP_EXPRGRAPH *exprgraph, SCIP_EXPRGRAPHNODE *rootnode, SCIP_EXPRTREE **exprtree)
Definition: expr.c:16257
SCIP_EXPR_SUM
Definition: type_expr.h:71
SCIP_Real
#define SCIP_Real
Definition: def.h:163
SCIP_EXPR_SIGNPOWER
Definition: type_expr.h:54
pub_reader.h
public methods for input file readers
GMS_PRINTLEN
#define GMS_PRINTLEN
Definition: reader_gms.c:81
SCIPconsGetHdlr
SCIP_CONSHDLR * SCIPconsGetHdlr(SCIP_CONS *cons)
Definition: cons.c:8097
cons_sos1.h
constraint handler for SOS type 1 constraints
SCIPgetRhsQuadratic
SCIP_Real SCIPgetRhsQuadratic(SCIP *scip, SCIP_CONS *cons)
Definition: cons_quadratic.c:15138
scip_message.h
public methods for message handling
SCIP_DECL_READERREAD
#define SCIP_DECL_READERREAD(x)
Definition: type_reader.h:78
SCIPvarGetOrigvarSum
SCIP_EXPORT SCIP_RETCODE SCIPvarGetOrigvarSum(SCIP_VAR **var, SCIP_Real *scalar, SCIP_Real *constant)
Definition: var.c:12545
SCIPgetExprgraphNodeNonlinear
SCIP_EXPRGRAPHNODE * SCIPgetExprgraphNodeNonlinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_nonlinear.c:9871
SCIPexprGetMonomialExponents
SCIP_Real * SCIPexprGetMonomialExponents(SCIP_EXPRDATA_MONOMIAL *monomial)
Definition: expr.c:5934
SCIP_Longint
#define SCIP_Longint
Definition: def.h:148
SCIP_EXPR_POLYNOMIAL
Definition: type_expr.h:75
SCIPconshdlrGetName
const char * SCIPconshdlrGetName(SCIP_CONSHDLR *conshdlr)
Definition: cons.c:4167
SCIP_EXPR_LOG
Definition: type_expr.h:56
SCIPgetTypeSetppc
SCIP_SETPPCTYPE SCIPgetTypeSetppc(SCIP *scip, SCIP_CONS *cons)
Definition: cons_setppc.c:9296
printSOCCons
static SCIP_RETCODE printSOCCons(SCIP *scip, FILE *file, const char *rowname, int nlhsvars, SCIP_VAR **lhsvars, SCIP_Real *lhscoeffs, SCIP_Real *lhsoffsets, SCIP_Real lhsconstant, SCIP_VAR *rhsvar, SCIP_Real rhscoef, SCIP_Real rhsoffset, SCIP_Bool transformed)
Definition: reader_gms.c:842
SCIPgetCoefsLinearVarsQuadratic
SCIP_Real * SCIPgetCoefsLinearVarsQuadratic(SCIP *scip, SCIP_CONS *cons)
Definition: cons_quadratic.c:15018
SCIPgetLinearVarBivariate
SCIP_VAR * SCIPgetLinearVarBivariate(SCIP *scip, SCIP_CONS *cons)
Definition: cons_bivariate.c:8061
cons_sos2.h
constraint handler for SOS type 2 constraints
SCIP_ExprTree
Definition: struct_expr.h:55
SCIPgetLhsAbspower
SCIP_Real SCIPgetLhsAbspower(SCIP *scip, SCIP_CONS *cons)
Definition: cons_abspower.c:7506
SCIPgetLhsVarsSOC
SCIP_VAR ** SCIPgetLhsVarsSOC(SCIP *scip, SCIP_CONS *cons)
Definition: cons_soc.c:5483
SCIPvarGetUbOriginal
SCIP_EXPORT SCIP_Real SCIPvarGetUbOriginal(SCIP_VAR *var)
Definition: var.c:17633
SCIPinfoMessage
void SCIPinfoMessage(SCIP *scip, FILE *file, const char *formatstr,...)
Definition: scip_message.c:199
SCIP_OBJSENSE_MINIMIZE
Definition: type_prob.h:39
SCIP_EXPR_SQUARE
Definition: type_expr.h:50
SCIPgetStage
SCIP_STAGE SCIPgetStage(SCIP *scip)
Definition: scip_general.c:356
scip_reader.h
public methods for reader plugins
SCIPgetLhsVarbound
SCIP_Real SCIPgetLhsVarbound(SCIP *scip, SCIP_CONS *cons)
Definition: cons_varbound.c:5127
SCIPexprGetLinearConstant
SCIP_Real SCIPexprGetLinearConstant(SCIP_EXPR *expr)
Definition: expr.c:5806
SCIP_QuadVarTerm::var
SCIP_VAR * var
Definition: cons_quadratic.h:106
SCIPexprGetNQuadElements
int SCIPexprGetNQuadElements(SCIP_EXPR *expr)
Definition: expr.c:5856
SCIPgetVarsLinear
SCIP_VAR ** SCIPgetVarsLinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_linear.c:18445
printLinearRow
static SCIP_RETCODE printLinearRow(SCIP *scip, FILE *file, const char *rowname, const char *rownameextension, const char *type, int nvars, SCIP_VAR **vars, SCIP_Real *vals, SCIP_Real rhs)
Definition: reader_gms.c:428
SCIPgetLinearVarsNonlinear
SCIP_VAR ** SCIPgetLinearVarsNonlinear(SCIP *scip, SCIP_CONS *cons)
Definition: cons_nonlinear.c:9803
SCIPaddCharParam
SCIP_RETCODE SCIPaddCharParam(SCIP *scip, const char *name, const char *desc, char *valueptr, SCIP_Bool isadvanced, char defaultvalue, const char *allowedvalues, SCIP_DECL_PARAMCHGD((*paramchgd)), SCIP_PARAMDATA *paramdata)
Definition: scip_param.c:158
SCIPgetCapacityKnapsack
SCIP_Longint SCIPgetCapacityKnapsack(SCIP *scip, SCIP_CONS *cons)
Definition: cons_knapsack.c:13550
SCIP_DECL_READERFREE
#define SCIP_DECL_READERFREE(x)
Definition: type_reader.h:62
SCIP_EXPR_MUL
Definition: type_expr.h:48
SCIPreallocBufferArray
#define SCIPreallocBufferArray(scip, ptr, num)
Definition: scip_mem.h:115
SCIP_EXPR_PARAM
Definition: type_expr.h:41
memory.h
memory allocation routines