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XPRSaddqmatrix, XPRSaddqmatrix64

XPRSaddqmatrix, XPRSaddqmatrix64

Purpose
Adds a new quadratic matrix into a row defined by triplets.
Synopsis
int XPRS_CC XPRSaddqmatrix(XPRSprob prob, int irow, int nqtr, const int mqc1[], const int mqc2[], const double dqe[]);

int XPRS_CC XPRSaddqmatrix64(XPRSprob prob, int irow, XPRSint64 nqtr, const int mqc1[], const int mqc2[], const double dqe[]);
Arguments
prob 
The current problem.
irow 
Index of the row where the quadratic matrix is to be added.
nqtr 
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.
mqc1 
First index in the triplets.
mqc2 
Second index in the triplets.
dqe 
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 dqe array shall contain the coefficients 1 and 3, respectively.
2. The matrix defined by mqc1, mqc2 and dqe 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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