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XSLPevaluateformula

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Purpose

Evaluate a formula using the current values of the variables

Synopsis

int XPRS_CC XSLPevaluateformula(XSLPprob Prob, int Parsed, int *Type, double *Value, double *dValue);

Arguments

Prob	The current SLP problem.
Parsed	integer indicating whether the formula of the item is in internal unparsed format (Parsed=0) or parsed (reverse Polish) format (Parsed=1).
Type	Integer array of token types for the formula.
Value	Double array of values corresponding to Type.
dValue	Address of a double precision value to receive the result of the calculation.

Example

The following example calculates the value of column 3 divided by column 6.

int n, Type[10];
double dValue, Value[10];

n = 0;
Type[n] = XSLP_COL; Value[n++] = 3;
Type[n] = XSLP_COL; Value[n++] = 6;
Type[n] = XSLP_OP;  Value[n++] = XSLP_DIVIDE;
Type[n++] = XSLP_EOF;

XSLPevaluateformula(Prob, 1, Type, Value, &dValue);

Further information

The formula in Type and Value must be terminated by an XSLP_EOF token.

The formula cannot include "complicated" functions, such as user functions which return more than one value

Related topics

XSLPevaluatecoef

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