Initializing help system before first use

XPRBgetrownum

Purpose
Get the row number for a constraint.
Synopsis
int XPRBgetrownum(XPRBctr ctr);
Argument
ctr 
Reference to a previously created constraint.
Return value
Row number (non-negative value), or a negative value.
Example
The following gets the row number of ctr1. 
XPRBprob prob;
XPRBctr ctr1;
   ...
int rindex;
ctr1 = XPRBnewctr(prob, "r1", XPRB_E);
rindex = XPRBgetrownum(ctr1);
Further information
This function returns the matrix row number of a constraint. If the matrix has not yet been generated or the constraint is not part of the matrix (constraint type XPRB_N or no non-zero terms) then the return value is negative. To check whether the matrix has been generated, use function XPRBgetprobstat. The counting of row numbers starts with 0.
Related topics
XPRBdelctr, XPRBnewctr.

Parent Topic BCL C library functions

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