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 row, int * p_ncoefs, int rowqcol1[], int rowqcol2[], double rowqcoef[]);
Arguments
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prob
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The current problem.
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row
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Index of the row for which the quadratic coefficients are to be returned.
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p_ncoefs
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Argument used to return the number of quadratic coefficients in the row.
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rowqcol1
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First index in the triplets. May be NULL if not required. |
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rowqcol2
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Second index in the triplets. May be NULL if not required. |
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rowqcoef
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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.
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