eval
eval |
Purpose
Evaluate a constraint or objective on the provided assignment of the decision variables.
Synopsis
int eval(XPRMcontext ctx, XPRMnlpdata nlpdata, int nb, const double *x, double *val);
Arguments
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ctx
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Mosel's execution context
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nlpd
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Problem information as generated by
loadprob
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nb
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Constraint number to evaluate or
NLEVAL_OBJ for the objective,
NLEVAL_ALL for everything,
NLEVAL_NL for nonlinear constraints or
NLEVAL_LIN linear constraints.
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x
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Values assigned to the decision variables
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val
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Reference that receives the result of the evaluation. In case of multiple evaluations, this must be an array large enough to store all the results
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Return value
0 if successful or 1 in case of error
Further information
When the function is called with
NLEVAL_ALL the array
val must be of size
nlpdata->nbctr, with
NLEVAL_NL it requires
nlpdata->nbnlctr entries and for
NLEVAL_LIN it contains
nlpdata->nbctr-nlpdata->nbnlctr values.