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