XSLPchgrowwt
XSLPchgrowwt |
Purpose
Set or change the initial penalty error weight for a row
Synopsis
int XSLP_CC XSLPchgrowwt(XSLPprob Prob, int RowIndex, const double *Value)
Arguments
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Prob
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The current SLP problem.
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RowIndex
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The index of the row whose weight is to be set or changed.
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Value
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Address of a double precision variable holding the new value of the weight. May be
NULL if not required.
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Example
The following example sets the initial weight of row number 2 to a fixed value of 3.6 and the initial weight of row 4 to a value twice the calculated default value.
double Value; Value = -3.6; XSLPchgrowwt(Prob,2,&Value); Value = 2.0; XSLPchgrowwt(Prob,4,&Value);
Further information
A positive value is interpreted as a multiplier of the default row weight calculated by Xpress-SLP.
A negative value is interpreted as a fixed value: the absolute value is used directly as the row weight.
The initial row weight is used only when the augmented structure is created.
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