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XPRSaddqmatrix, XPRSaddqmatrix64

Purpose
Adds a new quadratic matrix into a row defined by triplets.
Synopsis
int XPRS_CC XPRSaddqmatrix(XPRSprob prob, int row, int ncoefs, const int rowqcol1[], const int rowqcol2[], const double rowqcoef[]);

int XPRS_CC XPRSaddqmatrix64(XPRSprob prob, int row, XPRSint64 ncoefs, const int rowqcol1[], const int rowqcol2[], const double rowqcoef[]);
Arguments
prob 
The current problem.
row 
Index of the row where the quadratic matrix is to be added.
ncoefs 
Number of triplets used to define the quadratic matrix. This may be less than the number of coefficients in the quadratic matrix, since off diagonals and their transposed pairs are defined by one triplet.
rowqcol1 
First index in the triplets.
rowqcol2 
Second index in the triplets.
rowqcoef 
Coefficients in the triplets.
Further information
1. The triplets should be filled to define the upper-triangular part of the quadratic expression. This means that to add [x2 + 6 xy] the rowqcoef array shall contain the coefficients 1 and 3, respectively.
2. The matrix defined by rowqcol1, rowqcol2 and rowqcoef should be positive semi-definite for <= and negative semi-definite for >= rows.
3. The row must not be an equality or a ranged row.
Related topics
XPRSloadqcqp, XPRSgetqrowcoeff, XPRSchgqrowcoeff, XPRSgetqrowqmatrix, XPRSgetqrowqmatrixtriplets, XPRSgetqrows, XPRSchgqobj, XPRSchgmqobj, XPRSgetqobj.

Parent Topic Console and Library Functions

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