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XPRSgetqobj

Purpose
Returns a single quadratic objective function coefficient corresponding to the variable pair (objqcol1, objqcol2) of the Hessian matrix.
Topic areas
Problem Information, Quadratic
Synopsis
int XPRS_CC XPRSgetqobj(XPRSprob prob, int objqcol1, int objqcol2, double *p_objqcoef);
Arguments
prob 
The current problem.
objqcol1 
Column index for the first variable in the quadratic term.
objqcol2 
Column index for the second variable in the quadratic term.
p_objqcoef 
Pointer to a double value where the objective function coefficient is to be placed.
Example
The following returns the coefficient of the x 0 2 term in the objective function, placing it in the variable value : 
double value;
...
XPRSgetqobj(prob,0,0,&value);
Further information
p_objqcoef is the coefficient in the quadratic Hessian matrix. For example, if the objective function has the term [3x 1x 2 + 3x 2x 1]/2 the value retrieved by XPRSgetqobj is 3.0 and if the objective function has the term [6x 1 2]/2 the value retrieved by XPRSgetqobj is 6.0.
Related topics
XPRSgetmqobj, XPRSchgqobj, XPRSchgmqobj.

Parent Topic Console and Library Functions

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