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XPRSgetqrowqmatrixtriplets

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.
Synopsis
int XPRS_CC XPRSgetqrowqmatrixtriplets(XPRSprob prob, int irow, int * nqelem, int mqcol1[], int mqcol2[], double dqe[]);
Arguments
prob 
The current problem.
irow 
Index of the row for which the quadratic coefficients are to be returned.
nqelem 
Argument used to return the number of quadratic coefficients in the row.
mqcol1 
First index in the triplets. May be NULL if not required.
mqcol2 
Second index in the triplets. May be NULL if not required.
dqe 
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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