expr_entropy.h File Reference

Detailed Description

handler for -x*log(x) expressions

Author

Benjamin Mueller

Fabian Wegscheider

Definition in file expr_entropy.h.

#include "scip/scip.h"
#include "scip/type_expr.h"

Go to the source code of this file.

Functions
SCIP_RETCODE	SCIPincludeExprhdlrEntropy (SCIP *scip)
Entropy value expression
This expression handler provides the entropy function, that is, \[ x \mapsto \begin{cases} -x\log(x), & \mathrm{if} x > 0,\\ 0, & \mathrm{if} x = 0, \\ \mathrm{undefined}, & \mathrm{else}. \end{cases} \]
SCIP_RETCODE	SCIPcreateExprEntropy (SCIP *scip, SCIP_EXPR **expr, SCIP_EXPR *child, SCIP_DECL_EXPR_OWNERCREATE((*ownercreate)), void *ownercreatedata)
SCIP_Bool	SCIPisExprEntropy (SCIP *scip, SCIP_EXPR *expr)