Scippy

SCIP

Solving Constraint Integer Programs

Data Structures | Macros | Typedefs | Enumerations
type_expr.h File Reference
Public API of SCIP » Core API » Type Definitions

Detailed Description

type definitions for expressions and expression trees

Author
Stefan Vigerske
Thorsten Gellermann

Definition in file type_expr.h.

#include "scip/def.h"

Go to the source code of this file.

Data Structures

struct  SCIP_QuadElement
 

Macros

#define SCIP_EXPR_DEGREEINFINITY   65535
 
#define SCIP_DECL_EXPREVAL(x)   SCIP_RETCODE x (SCIP_EXPROPDATA opdata, int nargs, SCIP_Real* argvals, SCIP_Real* varvals, SCIP_Real* paramvals, SCIP_Real* result)
 
#define SCIP_DECL_EXPRINTEVAL(x)   SCIP_RETCODE x (SCIP_Real infinity, SCIP_EXPROPDATA opdata, int nargs, SCIP_INTERVAL* argvals, SCIP_INTERVAL* varvals, SCIP_Real* paramvals, SCIP_INTERVAL* result)
 
#define SCIP_DECL_EXPRCURV(x)   SCIP_RETCODE x (SCIP_Real infinity, SCIP_EXPROPDATA opdata, int nargs, SCIP_INTERVAL* argbounds, SCIP_EXPRCURV* argcurv, SCIP_EXPRCURV* result)
 
#define SCIP_DECL_EXPRCOPYDATA(x)   SCIP_RETCODE x (BMS_BLKMEM* blkmem, int nchildren, SCIP_EXPROPDATA opdatasource, SCIP_EXPROPDATA* opdatatarget)
 
#define SCIP_DECL_EXPRFREEDATA(x)   void x (BMS_BLKMEM* blkmem, int nchildren, SCIP_EXPROPDATA opdata)
 
#define SCIP_DECL_EXPRGRAPHVARADDED(x)   SCIP_RETCODE x (SCIP_EXPRGRAPH* exprgraph, void* userdata, void* var, SCIP_EXPRGRAPHNODE* varnode)
 
#define SCIP_DECL_EXPRGRAPHVARREMOVE(x)   SCIP_RETCODE x (SCIP_EXPRGRAPH* exprgraph, void* userdata, void* var, SCIP_EXPRGRAPHNODE* varnode)
 
#define SCIP_DECL_EXPRGRAPHVARCHGIDX(x)   SCIP_RETCODE x (SCIP_EXPRGRAPH* exprgraph, void* userdata, void* var, SCIP_EXPRGRAPHNODE* varnode, int oldidx, int newidx)
 
#define SCIP_EXPRBOUNDSTATUS_VALID   0x0
 
#define SCIP_EXPRBOUNDSTATUS_CHILDTIGHTENED   0x1
 
#define SCIP_EXPRBOUNDSTATUS_CHILDRELAXED   0x2
 
#define SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENT   0x4
 
#define SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENTRECENT   (0x8 | SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENT)
 
#define SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENTFORCE   (0x10 | SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENTRECENT)
 
#define SCIP_DECL_USEREXPRESTIMATE(x)   SCIP_RETCODE x (SCIP_Real infinity, SCIP_USEREXPRDATA* data, int nargs, SCIP_Real* argvals, SCIP_INTERVAL* argbounds, SCIP_Bool overestimate, SCIP_Real* coeffs, SCIP_Real* constant, SCIP_Bool *success)
 
#define SCIP_DECL_USEREXPREVAL(x)   SCIP_RETCODE x (SCIP_USEREXPRDATA* data, int nargs, SCIP_Real* argvals, SCIP_Real* funcvalue, SCIP_Real* gradient, SCIP_Real* hessian)
 
#define SCIP_DECL_USEREXPRINTEVAL(x)   SCIP_RETCODE x (SCIP_Real infinity, SCIP_USEREXPRDATA* data, int nargs, SCIP_INTERVAL* argvals, SCIP_INTERVAL* funcvalue, SCIP_INTERVAL* gradient, SCIP_INTERVAL* hessian)
 
#define SCIP_DECL_USEREXPRCURV(x)   SCIP_RETCODE x (SCIP_Real infinity, SCIP_USEREXPRDATA* data, int nargs, SCIP_INTERVAL* argbounds, SCIP_EXPRCURV* argcurv, SCIP_EXPRCURV* result)
 
#define SCIP_DECL_USEREXPRPROP(x)   SCIP_RETCODE x (SCIP_Real infinity, SCIP_USEREXPRDATA* data, int nargs, SCIP_INTERVAL* argbounds, SCIP_INTERVAL funcbounds, SCIP_Bool* cutoff)
 
#define SCIP_DECL_USEREXPRCOPYDATA(x)   SCIP_RETCODE x (BMS_BLKMEM* blkmem, int nchildren, SCIP_USEREXPRDATA* datasource, SCIP_USEREXPRDATA** datatarget)
 
#define SCIP_DECL_USEREXPRFREEDATA(x)   void x (BMS_BLKMEM* blkmem, int nchildren, SCIP_USEREXPRDATA* data)
 
#define SCIP_DECL_USEREXPRPRINT(x)   void x (SCIP_USEREXPRDATA* data, SCIP_MESSAGEHDLR* messagehdlr, FILE* file)
 

Typedefs

typedef enum SCIP_ExprOp SCIP_EXPROP
 
typedef union SCIP_ExprOpData SCIP_EXPROPDATA
 
typedef struct SCIP_Expr SCIP_EXPR
 
typedef struct SCIP_ExprTree SCIP_EXPRTREE
 
typedef enum SCIP_ExprCurv SCIP_EXPRCURV
 
typedef struct SCIP_QuadElement SCIP_QUADELEM
 
typedef struct SCIP_ExprData_Quadratic SCIP_EXPRDATA_QUADRATIC
 
typedef struct SCIP_ExprData_Monomial SCIP_EXPRDATA_MONOMIAL
 
typedef struct SCIP_ExprData_Polynomial SCIP_EXPRDATA_POLYNOMIAL
 
typedef struct SCIP_ExprData_User SCIP_EXPRDATA_USER
 
typedef struct SCIP_ExprGraphNode SCIP_EXPRGRAPHNODE
 
typedef struct SCIP_ExprGraph SCIP_EXPRGRAPH
 
typedef char SCIP_EXPRBOUNDSTATUS
 
typedef struct SCIP_UserExprData SCIP_USEREXPRDATA
 

Enumerations

enum  SCIP_ExprOp {
  SCIP_EXPR_VARIDX = 1,
  SCIP_EXPR_CONST = 2,
  SCIP_EXPR_PARAM = 3,
  SCIP_EXPR_PLUS = 8,
  SCIP_EXPR_MINUS = 9,
  SCIP_EXPR_MUL = 10,
  SCIP_EXPR_DIV = 11,
  SCIP_EXPR_SQUARE = 12,
  SCIP_EXPR_SQRT = 13,
  SCIP_EXPR_REALPOWER = 14,
  SCIP_EXPR_INTPOWER = 15,
  SCIP_EXPR_SIGNPOWER = 16,
  SCIP_EXPR_EXP = 17,
  SCIP_EXPR_LOG = 18,
  SCIP_EXPR_SIN = 19,
  SCIP_EXPR_COS = 20,
  SCIP_EXPR_TAN = 21,
  SCIP_EXPR_MIN = 24,
  SCIP_EXPR_MAX = 25,
  SCIP_EXPR_ABS = 26,
  SCIP_EXPR_SIGN = 27,
  SCIP_EXPR_SUM = 64,
  SCIP_EXPR_PRODUCT = 65,
  SCIP_EXPR_LINEAR = 66,
  SCIP_EXPR_QUADRATIC = 67,
  SCIP_EXPR_POLYNOMIAL = 68,
  SCIP_EXPR_USER = 69,
  SCIP_EXPR_LAST = 70
}
 
enum  SCIP_ExprCurv {
  SCIP_EXPRCURV_UNKNOWN = 0,
  SCIP_EXPRCURV_CONVEX = 1,
  SCIP_EXPRCURV_CONCAVE = 2,
  SCIP_EXPRCURV_LINEAR = SCIP_EXPRCURV_CONVEX | SCIP_EXPRCURV_CONCAVE
}
 

Macro Definition Documentation

◆ SCIP_EXPR_DEGREEINFINITY

#define SCIP_EXPR_DEGREEINFINITY   65535

value that stands for an infinite degree of an expression (see SCIPexprGetMaxDegree)

Definition at line 116 of file type_expr.h.

Referenced by exprUnconvertPolynomial(), readPolynomial(), and SCIPexprGetMaxDegree().

◆ SCIP_DECL_EXPREVAL

#define SCIP_DECL_EXPREVAL (   x)    SCIP_RETCODE x (SCIP_EXPROPDATA opdata, int nargs, SCIP_Real* argvals, SCIP_Real* varvals, SCIP_Real* paramvals, SCIP_Real* result)

signature of an expression (pointwise) evaluation function The function should return nan, inf, or -inf in result if the function is undefined for the given arguments.

  • opdata operand data
  • nargs number of arguments
  • argvals values of arguments
  • varvals values for variables
  • paramvals values for parameters
  • result buffer where to store result of evaluation

Definition at line 128 of file type_expr.h.

◆ SCIP_DECL_EXPRINTEVAL

#define SCIP_DECL_EXPRINTEVAL (   x)    SCIP_RETCODE x (SCIP_Real infinity, SCIP_EXPROPDATA opdata, int nargs, SCIP_INTERVAL* argvals, SCIP_INTERVAL* varvals, SCIP_Real* paramvals, SCIP_INTERVAL* result)

signature of an expression (interval) evaluation function The function should return an empty interval if the function is undefined for the given arguments.

  • infinity value for infinity
  • opdata operand data
  • nargs number of arguments
  • argvals interval values of arguments
  • varvals interval values for variables
  • paramvals values for parameters
  • result buffer where to store result of evaluation

Definition at line 141 of file type_expr.h.

◆ SCIP_DECL_EXPRCURV

#define SCIP_DECL_EXPRCURV (   x)    SCIP_RETCODE x (SCIP_Real infinity, SCIP_EXPROPDATA opdata, int nargs, SCIP_INTERVAL* argbounds, SCIP_EXPRCURV* argcurv, SCIP_EXPRCURV* result)

signature of a simple expression curvature check function

  • infinity value for infinity
  • opdata operand data
  • nargs number of arguments
  • argbounds bounds on value of arguments
  • argcurv curvature of arguments
  • paramvals values for parameters
  • result buffer where to store result of curvature check

Definition at line 153 of file type_expr.h.

◆ SCIP_DECL_EXPRCOPYDATA

#define SCIP_DECL_EXPRCOPYDATA (   x)    SCIP_RETCODE x (BMS_BLKMEM* blkmem, int nchildren, SCIP_EXPROPDATA opdatasource, SCIP_EXPROPDATA* opdatatarget)

signature of a expression data copy function

  • blkmem block memory
  • nchildren number of children in expression
  • opdatasource source expression data
  • opdatatarget pointer to target expression data

Definition at line 162 of file type_expr.h.

◆ SCIP_DECL_EXPRFREEDATA

#define SCIP_DECL_EXPRFREEDATA (   x)    void x (BMS_BLKMEM* blkmem, int nchildren, SCIP_EXPROPDATA opdata)

signature of a expression data free function

  • blkmem block memory
  • nchildren number of children in expression
  • opdata expression data to free

Definition at line 170 of file type_expr.h.

◆ SCIP_DECL_EXPRGRAPHVARADDED

#define SCIP_DECL_EXPRGRAPHVARADDED (   x)    SCIP_RETCODE x (SCIP_EXPRGRAPH* exprgraph, void* userdata, void* var, SCIP_EXPRGRAPHNODE* varnode)

callback method of expression graph invoked when a new variable has been added to the graph

input:

  • exprgraph expression graph
  • userdata a pointer to user data
  • var variable that has been added to expression graph
  • varnode new expression graph node for a variable

Definition at line 183 of file type_expr.h.

◆ SCIP_DECL_EXPRGRAPHVARREMOVE

#define SCIP_DECL_EXPRGRAPHVARREMOVE (   x)    SCIP_RETCODE x (SCIP_EXPRGRAPH* exprgraph, void* userdata, void* var, SCIP_EXPRGRAPHNODE* varnode)

callback method of expression graph invoked when a variable is to be removed from the graph

input:

  • exprgraph expression graph
  • userdata a pointer to user data
  • var variable that will be removed from the expression graph
  • varnode expression graph node corresponding to variable

Definition at line 193 of file type_expr.h.

◆ SCIP_DECL_EXPRGRAPHVARCHGIDX

#define SCIP_DECL_EXPRGRAPHVARCHGIDX (   x)    SCIP_RETCODE x (SCIP_EXPRGRAPH* exprgraph, void* userdata, void* var, SCIP_EXPRGRAPHNODE* varnode, int oldidx, int newidx)

callback method of expression graph invoked when a variable changes its index

input:

  • exprgraph expression graph
  • userdata a pointer to user data
  • var variable which will change its index
  • varnode expression graph node corresponding to variable
  • oldidx current index of variable
  • newidx new index the variable will have

Definition at line 205 of file type_expr.h.

◆ SCIP_EXPRBOUNDSTATUS_VALID

#define SCIP_EXPRBOUNDSTATUS_VALID   0x0

bounds are valid, i.e., conform with bounds of children

Definition at line 211 of file type_expr.h.

Referenced by exprgraphCreateNode(), exprgraphNodeUpdateBounds(), exprgraphUpdateVarNodeBounds(), SCIPexprgraphAddNode(), SCIPexprgraphGetNodePolynomialMonomialCurvature(), SCIPexprgraphReplaceVarByLinearSum(), and SCIPexprgraphUpdateNodeBoundsCurvature().

◆ SCIP_EXPRBOUNDSTATUS_CHILDTIGHTENED

#define SCIP_EXPRBOUNDSTATUS_CHILDTIGHTENED   0x1

a child bounds were tightened since last calculation

Definition at line 212 of file type_expr.h.

Referenced by exprgraphNodeUpdateBounds(), exprgraphPrintNodeDot(), exprgraphUpdateVarNodeBounds(), SCIPexprgraphAddNode(), SCIPexprgraphNodeSplitOffLinear(), and SCIPexprgraphUpdateNodeBoundsCurvature().

◆ SCIP_EXPRBOUNDSTATUS_CHILDRELAXED

#define SCIP_EXPRBOUNDSTATUS_CHILDRELAXED   0x2

bounds are not valid and need to be recomputed, because the bounds in a child were relaxed

Definition at line 213 of file type_expr.h.

Referenced by exprgraphNodePropagateBounds(), exprgraphNodeUpdateBounds(), exprgraphPrintNodeDot(), exprgraphUpdateVarNodeBounds(), SCIPexprgraphGetNodePolynomialMonomialCurvature(), SCIPexprgraphReplaceVarByLinearSum(), SCIPexprgraphTightenNodeBounds(), and SCIPexprgraphUpdateNodeBoundsCurvature().

◆ SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENT

#define SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENT   0x4

bounds have been tightened by reverse propagation in a parent, they are valid as long as there has been no relaxation of bounds somewhere in the graph

Definition at line 214 of file type_expr.h.

Referenced by exprgraphNodePropagateBounds(), exprgraphNodeUpdateBounds(), exprgraphPrintNodeDot(), SCIPexprgraphTightenNodeBounds(), and SCIPexprgraphUpdateNodeBoundsCurvature().

◆ SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENTRECENT

#define SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENTRECENT   (0x8 | SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENT)

bounds have recently been tightened by reverse propagation in a parent, this tightening has not been propagated further down yet

Definition at line 215 of file type_expr.h.

Referenced by exprgraphNodePropagateBounds(), and SCIPexprgraphTightenNodeBounds().

◆ SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENTFORCE

#define SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENTFORCE   (0x10 | SCIP_EXPRBOUNDSTATUS_TIGHTENEDBYPARENTRECENT)

bounds may have recently been tightened by reverse propagation in a parent, in any case we want to propagate bounds further down

Definition at line 216 of file type_expr.h.

Referenced by exprgraphNodePropagateBounds(), and SCIPexprgraphTightenNodeBounds().

◆ SCIP_DECL_USEREXPRESTIMATE

#define SCIP_DECL_USEREXPRESTIMATE (   x)    SCIP_RETCODE x (SCIP_Real infinity, SCIP_USEREXPRDATA* data, int nargs, SCIP_Real* argvals, SCIP_INTERVAL* argbounds, SCIP_Bool overestimate, SCIP_Real* coeffs, SCIP_Real* constant, SCIP_Bool *success)

signature of an user's expression under/over estimation function The function should return nan, inf, or -inf in result if the function is undefined for the given arguments.

  • infinity value for infinity
  • data user expression data
  • nargs number of arguments
  • argvals values of arguments
  • argbounds bounds on value of arguments
  • overestimate flag indicating whether to over- or under estimate the expression
  • coeffs buffer where to store resulting coeffs of arguments for the estimator
  • constant buffer where to store resulting constant of the estimator
  • success buffer to indicate whether under-/overestimation was successful

Definition at line 236 of file type_expr.h.

◆ SCIP_DECL_USEREXPREVAL

#define SCIP_DECL_USEREXPREVAL (   x)    SCIP_RETCODE x (SCIP_USEREXPRDATA* data, int nargs, SCIP_Real* argvals, SCIP_Real* funcvalue, SCIP_Real* gradient, SCIP_Real* hessian)

signature of an user's expression (pointwise) evaluation function The function should return nan, inf, or -inf in result if the function is undefined for the given arguments.

  • data user expression data
  • nargs number of arguments
  • argvals values of arguments
  • funcvalue buffer where to store result of function evaluation
  • gradient buffer where to store result of gradient evaluation (NULL if not requested)
  • hessian buffer where to store result of Hessian evaluation (NULL if not requested, currently full dense matrix)

Definition at line 248 of file type_expr.h.

◆ SCIP_DECL_USEREXPRINTEVAL

#define SCIP_DECL_USEREXPRINTEVAL (   x)    SCIP_RETCODE x (SCIP_Real infinity, SCIP_USEREXPRDATA* data, int nargs, SCIP_INTERVAL* argvals, SCIP_INTERVAL* funcvalue, SCIP_INTERVAL* gradient, SCIP_INTERVAL* hessian)

signature of an user's expression (interval) evaluation function The function should return an empty interval if the function is undefined for the given arguments.

  • infinity value for infinity
  • data user expression data
  • nargs number of arguments
  • argvals interval values of arguments
  • funvalue buffer where to store result of function evaluation
  • gradient buffer where to store result of gradient evaluation (NULL if not requested)
  • hessian buffer where to store result of Hessian evaluation (NULL if not requested, currently full dense matrix)

Definition at line 261 of file type_expr.h.

◆ SCIP_DECL_USEREXPRCURV

#define SCIP_DECL_USEREXPRCURV (   x)    SCIP_RETCODE x (SCIP_Real infinity, SCIP_USEREXPRDATA* data, int nargs, SCIP_INTERVAL* argbounds, SCIP_EXPRCURV* argcurv, SCIP_EXPRCURV* result)

signature of a user's expression curvature check function

  • infinity value for infinity
  • data user expression data
  • nargs number of arguments
  • argbounds bounds on value of arguments
  • argcurv curvature of arguments
  • result buffer where to store result of curvature check

Definition at line 272 of file type_expr.h.

◆ SCIP_DECL_USEREXPRPROP

#define SCIP_DECL_USEREXPRPROP (   x)    SCIP_RETCODE x (SCIP_Real infinity, SCIP_USEREXPRDATA* data, int nargs, SCIP_INTERVAL* argbounds, SCIP_INTERVAL funcbounds, SCIP_Bool* cutoff)

signature of an user's expression interval propagation function The function should compute intervals of the arguments given an interval for the function itself and all arguments.

  • infinity value for infinity
  • data user expression data
  • nargs number of arguments
  • argbounds bounds on values of arguments (on output: tightened bounds)
  • funcbounds bounds on function value
  • cutoff buffer to indicate whether an empty child interval was found

Definition at line 284 of file type_expr.h.

◆ SCIP_DECL_USEREXPRCOPYDATA

#define SCIP_DECL_USEREXPRCOPYDATA (   x)    SCIP_RETCODE x (BMS_BLKMEM* blkmem, int nchildren, SCIP_USEREXPRDATA* datasource, SCIP_USEREXPRDATA** datatarget)

signature of a user's expression data copy function

  • blkmem block memory
  • nchildren number of children in expression
  • datasource source user expression data
  • datatarget target user expression data

Definition at line 293 of file type_expr.h.

◆ SCIP_DECL_USEREXPRFREEDATA

#define SCIP_DECL_USEREXPRFREEDATA (   x)    void x (BMS_BLKMEM* blkmem, int nchildren, SCIP_USEREXPRDATA* data)

signature of a user's expression data free function

  • blkmem block memory
  • nchildren number of children in expression
  • data user expression data to free

Definition at line 301 of file type_expr.h.

◆ SCIP_DECL_USEREXPRPRINT

#define SCIP_DECL_USEREXPRPRINT (   x)    void x (SCIP_USEREXPRDATA* data, SCIP_MESSAGEHDLR* messagehdlr, FILE* file)

signature of a user's expression print function The function should print the user expression's name that prepends the list of arguments "(x1,x2,...)". If not specified, only "user" is printed.

  • data user expression data
  • messagehdlr SCIP message handler
  • file output file, or NULL if standard output should be used

Definition at line 310 of file type_expr.h.

Typedef Documentation

◆ SCIP_EXPROP

typedef enum SCIP_ExprOp SCIP_EXPROP

expression operand

Definition at line 91 of file type_expr.h.

◆ SCIP_EXPROPDATA

typedef union SCIP_ExprOpData SCIP_EXPROPDATA

expression operand data

Definition at line 92 of file type_expr.h.

◆ SCIP_EXPR

typedef struct SCIP_Expr SCIP_EXPR

expression

Definition at line 93 of file type_expr.h.

◆ SCIP_EXPRTREE

typedef struct SCIP_ExprTree SCIP_EXPRTREE

expression tree

Definition at line 94 of file type_expr.h.

◆ SCIP_EXPRCURV

typedef enum SCIP_ExprCurv SCIP_EXPRCURV

curvature types

Definition at line 95 of file type_expr.h.

◆ SCIP_QUADELEM

typedef struct SCIP_QuadElement SCIP_QUADELEM

element of a quadratic term

Definition at line 108 of file type_expr.h.

◆ SCIP_EXPRDATA_QUADRATIC

typedef struct SCIP_ExprData_Quadratic SCIP_EXPRDATA_QUADRATIC

the data of a quadratic expression (SCIP_EXPR_QUADRATIC)

Definition at line 109 of file type_expr.h.

◆ SCIP_EXPRDATA_MONOMIAL

typedef struct SCIP_ExprData_Monomial SCIP_EXPRDATA_MONOMIAL

a monomial as part of the data in a polynomial expression

Definition at line 111 of file type_expr.h.

◆ SCIP_EXPRDATA_POLYNOMIAL

typedef struct SCIP_ExprData_Polynomial SCIP_EXPRDATA_POLYNOMIAL

the data of a polynomial expression (SCIP_EXPR_POLYNOMIAL)

Definition at line 112 of file type_expr.h.

◆ SCIP_EXPRDATA_USER

typedef struct SCIP_ExprData_User SCIP_EXPRDATA_USER

expression data of a user expression (not the user-data of a user expression)

Definition at line 114 of file type_expr.h.

◆ SCIP_EXPRGRAPHNODE

typedef struct SCIP_ExprGraphNode SCIP_EXPRGRAPHNODE

node in an expression graph

Definition at line 172 of file type_expr.h.

◆ SCIP_EXPRGRAPH

typedef struct SCIP_ExprGraph SCIP_EXPRGRAPH

an expression graph (DAG)

Definition at line 173 of file type_expr.h.

◆ SCIP_EXPRBOUNDSTATUS

typedef char SCIP_EXPRBOUNDSTATUS

bitflags that indicate the status of bounds stored in a node of an expression graph

Definition at line 218 of file type_expr.h.

◆ SCIP_USEREXPRDATA

typedef struct SCIP_UserExprData SCIP_USEREXPRDATA

the user data of a user expression

Definition at line 221 of file type_expr.h.

Enumeration Type Documentation

◆ SCIP_ExprOp

enum SCIP_ExprOp

Operators of expressions.

Enumerator
SCIP_EXPR_VARIDX 

variable given by index (stored in data.idx)

SCIP_EXPR_CONST 

constant (value stored in data.dbl)

SCIP_EXPR_PARAM 

parameter = a constant that can be modified (should not be simplified away)

SCIP_EXPR_PLUS 

addition (2 operands)

SCIP_EXPR_MINUS 

substraction (2 operands)

SCIP_EXPR_MUL 

multiplication (2 operands)

SCIP_EXPR_DIV 

division (2 operands)

SCIP_EXPR_SQUARE 

square (1 operand)

SCIP_EXPR_SQRT 

square root (1 operand)

SCIP_EXPR_REALPOWER 

power with real exponent (1 operand!, assumed to be nonnegative, exponent is stored in expression data)

SCIP_EXPR_INTPOWER 

power with integer exponent (1 operand!, exponent stored in expression data)

SCIP_EXPR_SIGNPOWER 

signed power (sign(x)|x|^a, 1 operand!, exponent is stored in expression data)

SCIP_EXPR_EXP 

exponential (e^x, 1 operand)

SCIP_EXPR_LOG 

natural logarithm (ln(x), 1 operand)

SCIP_EXPR_SIN 

sinus (1 operand)

SCIP_EXPR_COS 

cosinus (1 operand)

SCIP_EXPR_TAN 

tangent (1 operand)

SCIP_EXPR_MIN 

gaussian error function (1 operand) imaginary part of gaussian error function (1 operand) minimum (2 operands)

SCIP_EXPR_MAX 

maximum (2 operands)

SCIP_EXPR_ABS 

absolute value (1 operand)

SCIP_EXPR_SIGN 

sign of value (1 operand)

SCIP_EXPR_SUM 

summation sum_{i=1}^n op_i (n operands)

SCIP_EXPR_PRODUCT 

product prod_{i=1}^n op_i (n operands)

SCIP_EXPR_LINEAR 

linear term sum_{i=1}^n a_i op_i (n operands)

SCIP_EXPR_QUADRATIC 

quadratic term sum_{i,j=1}^n a_{i,j} op_i op_j (n operands)

SCIP_EXPR_POLYNOMIAL 

polynomial term sum_{I} a_{I}ops^I (I a multiindex, n operands)

SCIP_EXPR_USER 

a user defined expression

SCIP_EXPR_LAST 

no expression, used for counting reasons

Definition at line 36 of file type_expr.h.

◆ SCIP_ExprCurv

enum SCIP_ExprCurv

Curvature types

Enumerator
SCIP_EXPRCURV_UNKNOWN 

unknown curvature (or indefinite)

SCIP_EXPRCURV_CONVEX 

convex

SCIP_EXPRCURV_CONCAVE 

concave

SCIP_EXPRCURV_LINEAR 

linear = convex and concave

Definition at line 83 of file type_expr.h.