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XPRSchgqrowcoeff

XPRSchgqrowcoeff

Purpose
Changes a single quadratic coefficient in a row.
Synopsis
int XPRS_CC XPRSchgqrowcoeff(XPRSprob prob, int irow, int icol, int jcol, double dval);
Arguments
prob 
The current problem.
irow 
Index of the row where the quadratic matrix is to be changed.
icol 
First index of the coefficient to be changed.
jcol 
Second index of the coefficient to be changed.
dval 
The new coefficient.
Further information
1. This function may be used to add new nonzero coefficients, or even to define the whole quadratic expression with it. Doing that, however, is significantly less efficient than adding the whole expression with XPRSaddqmatrix.
2. The row must not be an equality or a ranged row.
Related topics
XPRSloadqcqp, XPRSgetqrowcoeff, XPRSaddqmatrix, XPRSchgqrowcoeff, XPRSgetqrowqmatrix, XPRSgetqrowqmatrixtriplets, XPRSgetqrows, XPRSchgqobj, XPRSchgmqobj, XPRSgetqobj.

Parent Topic Console and Library Functions

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