cons_soc.c File Reference

Detailed Description

some API functions of removed constraint handler for second order cone constraints \(\sqrt{\gamma + \sum_{i=1}^{n} (\alpha_i\, (x_i + \beta_i))^2} \leq \alpha_{n+1}\, (x_{n+1}+\beta_{n+1})\)

Author

Stefan Vigerske

Definition in file cons_soc.c.

#include "scip/cons_soc.h"
#include "scip/cons_nonlinear.h"
#include "scip/expr_var.h"
#include "scip/expr_pow.h"
#include "scip/expr_sum.h"

Go to the source code of this file.

Functions
static SCIP_RETCODE	createSOCExpression (SCIP *scip, SCIP_EXPR **expr, int nvars, SCIP_VAR **vars, SCIP_Real *coefs, SCIP_Real *offsets, SCIP_Real constant, SCIP_VAR *rhsvar, SCIP_Real rhscoeff)
SCIP_RETCODE	SCIPcreateConsSOC (SCIP *scip, SCIP_CONS **cons, const char *name, int nvars, SCIP_VAR **vars, SCIP_Real *coefs, SCIP_Real *offsets, SCIP_Real constant, SCIP_VAR *rhsvar, SCIP_Real rhscoeff, SCIP_Real rhsoffset, SCIP_Bool initial, SCIP_Bool separate, SCIP_Bool enforce, SCIP_Bool check, SCIP_Bool propagate, SCIP_Bool local, SCIP_Bool modifiable, SCIP_Bool dynamic, SCIP_Bool removable)
SCIP_RETCODE	SCIPcreateConsBasicSOC (SCIP *scip, SCIP_CONS **cons, const char *name, int nvars, SCIP_VAR **vars, SCIP_Real *coefs, SCIP_Real *offsets, SCIP_Real constant, SCIP_VAR *rhsvar, SCIP_Real rhscoeff, SCIP_Real rhsoffset)
SCIP_RETCODE	SCIPgetNlRowSOC (SCIP *scip, SCIP_CONS *cons, SCIP_NLROW **nlrow)

Function Documentation

createSOCExpression()

static SCIP_RETCODE createSOCExpression ( SCIP *  scip, SCIP_EXPR **  expr, int  nvars, SCIP_VAR **  vars, SCIP_Real *  coefs, SCIP_Real *  offsets, SCIP_Real  constant, SCIP_VAR *  rhsvar, SCIP_Real  rhscoeff  )

static

creates expression for \(\sqrt{\gamma + \sum_{i=1}^{n} (\alpha_i\, (x_i + \beta_i))^2} - \alpha_{n+1} x_{n+1}\)

Parameters

scip	SCIP data structure
expr	buffer to store expression
nvars	number of variables on left hand side of constraint (n)
vars	array with variables on left hand side (x_i)
coefs	array with coefficients of left hand side variables (alpha_i), or NULL if all 1.0
offsets	array with offsets of variables (beta_i), or NULL if all 0.0
constant	constant on left hand side (gamma)
rhsvar	variable on right hand side of constraint (x_{n+1})
rhscoeff	coefficient of variable on right hand side (alpha_{n+1})

Definition at line 32 of file cons_soc.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPappendExprSumExpr(), SCIPcreateExprPow(), SCIPcreateExprSum(), SCIPcreateExprVar(), and SCIPreleaseExpr().

Referenced by SCIPcreateConsBasicSOC(), and SCIPcreateConsSOC().