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SCIP Doxygen Documentation: exprinterpret_cppad.cpp File Reference

methods to interpret (evaluate) an expression "fast" using CppAD

Definition in file exprinterpret_cppad.cpp.

#include "scip/exprinterpret.h"
#include "scip/def.h"
#include "scip/intervalarith.h"
#include "scip/pub_expr.h"
#include "scip/scip_expr.h"
#include "scip/expr_pow.h"
#include "scip/expr_exp.h"
#include "scip/expr_log.h"
#include "scip/expr_varidx.h"
#include <cmath>
#include <cstring>
#include <algorithm>
#include <vector>
#include <cppad/cppad.hpp>
#include <cppad/utility/error_handler.hpp>

Go to the source code of this file.

template<class Type > void posintpower (const vector< Type > &in, vector< Type > &out, size_t exponent) template<class Type > static void evalSignPower (CppAD::AD< Type > &resultant, const CppAD::AD< Type > &arg, SCIP_EXPR *expr) template<class Type > static void evalIntPower (Type &resultant, const Type &arg, const int exponent) template<class Type > static SCIP_RETCODE eval (SCIP *scip, SCIP_EXPR *expr, SCIP_EXPRINTDATA *exprintdata, const vector< Type > &x, Type &val) static void cppaderrorcallback (bool known, int line, const char *file, const char *cond, const char *msg) static CppAD::ErrorHandler errorhandler (cppaderrorcallback) const char * SCIPexprintGetName (void) const char * SCIPexprintGetDesc (void) SCIP_EXPRINTCAPABILITY SCIPexprintGetCapability (void) SCIP_RETCODE SCIPexprintCreate (SCIP *scip, SCIP_EXPRINT **exprint) SCIP_RETCODE SCIPexprintFree (SCIP *scip, SCIP_EXPRINT **exprint) SCIP_RETCODE SCIPexprintCompile (SCIP *scip, SCIP_EXPRINT *exprint, SCIP_EXPR *rootexpr, SCIP_EXPRINTDATA **exprintdata) SCIP_RETCODE SCIPexprintFreeData (SCIP *scip, SCIP_EXPRINT *exprint, SCIP_EXPR *expr, SCIP_EXPRINTDATA **exprintdata) SCIP_EXPRINTCAPABILITY SCIPexprintGetExprCapability (SCIP *scip, SCIP_EXPRINT *exprint, SCIP_EXPR *expr, SCIP_EXPRINTDATA *exprintdata) SCIP_RETCODE SCIPexprintEval (SCIP *scip, SCIP_EXPRINT *exprint, SCIP_EXPR *expr, SCIP_EXPRINTDATA *exprintdata, SCIP_Real *varvals, SCIP_Real *val) SCIP_RETCODE SCIPexprintGrad (SCIP *scip, SCIP_EXPRINT *exprint, SCIP_EXPR *expr, SCIP_EXPRINTDATA *exprintdata, SCIP_Real *varvals, SCIP_Bool new_varvals, SCIP_Real *val, SCIP_Real *gradient) SCIP_RETCODE SCIPexprintHessianSparsity (SCIP *scip, SCIP_EXPRINT *exprint, SCIP_EXPR *expr, SCIP_EXPRINTDATA *exprintdata, SCIP_Real *varvals, int **rowidxs, int **colidxs, int *nnz) SCIP_RETCODE SCIPexprintHessian (SCIP *scip, SCIP_EXPRINT *exprint, SCIP_EXPR *expr, SCIP_EXPRINTDATA *exprintdata, SCIP_Real *varvals, SCIP_Bool new_varvals, SCIP_Real *val, int **rowidxs, int **colidxs, SCIP_Real **hessianvals, int *nnz) ◆ NO_CPPAD_USER_ATOMIC ◆ CPPAD_MAX_NUM_THREADS ◆ posintpower() void posintpower ( const vector< Type > & in, vector< Type > & out, size_t exponent )

power function with natural exponents

Parameters: in vector which first argument is base out vector where to store result in first argument exponent exponent

Definition at line 556 of file exprinterpret_cppad.cpp.

Referenced by evalIntPower().

◆ evalSignPower() static void evalSignPower ( CppAD::AD< Type > & resultant, const CppAD::AD< Type > & arg, SCIP_EXPR * expr ) static ◆ evalIntPower() static void evalIntPower ( Type & resultant, const Type & arg, const int exponent ) static ◆ eval()

CppAD compatible evaluation of an expression for given arguments

Parameters: scip SCIP data structure expr expression exprintdata interpreter data for root expression x values of variables val buffer to store expression value

Definition at line 1334 of file exprinterpret_cppad.cpp.

References EPSISINT, eval(), evalIntPower(), evalSignPower(), NULL, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPexprGetChildren(), SCIPexprGetHdlr(), SCIPexprGetNChildren(), SCIPexprhdlrGetName(), SCIPfreeBufferArray, SCIPgetCoefExprProduct(), SCIPgetCoefsExprSum(), SCIPgetConstantExprSum(), SCIPgetExponentExprPow(), SCIPgetIndexExprVaridx(), SCIPgetValueExprValue(), SCIPisExprExp(), SCIPisExprLog(), SCIPisExprPower(), SCIPisExprProduct(), SCIPisExprSignpower(), SCIPisExprSum(), SCIPisExprValue(), SCIPisExprVaridx(), and x.

Referenced by eval(), SCIPexprhdlrCreate(), SCIPexprintEval(), and SCIPincludeExprhdlr().

◆ cppaderrorcallback() static void cppaderrorcallback ( bool known, int line, const char * file, const char * cond, const char * msg ) static

replacement for CppAD's default error handler

In debug mode, CppAD gives an error when an evaluation contains a nan. We do not want to stop execution in such a case, since the calling routine should check for nan's and decide what to do. Since we cannot ignore this particular error, we ignore all.

Parameters: known is the error from a known source? line line where error occured file file where error occured cond error condition msg error message

Definition at line 1463 of file exprinterpret_cppad.cpp.

References SCIPdebugMessage.

◆ errorhandler()

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