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XPRSgetqrowqmatrixtriplets

Purpose
Returns the nonzeros in a quadratic constraint coefficients matrix as triplets (index pairs with coefficients). To achieve maximum efficiency, XPRSgetqrowqmatrixtriplets returns the lower triangular part of this matrix only.
Topic areas
Problem Information, Quadratic
Synopsis
int XPRS_CC XPRSgetqrowqmatrixtriplets(XPRSprob prob, int row, int * p_ncoefs, int rowqcol1[], int rowqcol2[], double rowqcoef[]);
Arguments
prob 
The current problem.
row 
Index of the row for which the quadratic coefficients are to be returned.
p_ncoefs 
Argument used to return the number of quadratic coefficients in the row. May be NULL if not required.
rowqcol1 
First index in the triplets. May be NULL if not required.
rowqcol2 
Second index in the triplets. May be NULL if not required.
rowqcoef 
Coefficients in the triplets. May be NULL if not required.
Further information
If a row index of -1 is used, the function returns the quadratic coefficients for the objective function.
Related topics
XPRSloadqcqp, XPRSgetqrowcoeff, XPRSaddqmatrix, XPRSchgqrowcoeff, XPRSgetqrowqmatrix, XPRSgetqrows, XPRSchgqobj, XPRSchgmqobj, XPRSgetqobj.

Parent Topic Console and Library Functions

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