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XPRBsetctrtype

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Purpose

Set the constraint type.

Synopsis

int XPRBsetctrtype(XPRBctr ctr, int qrtype);

Arguments

ctr	Reference to a previously created constraint.
qrtype	The constraint type, which must be one of: XPRB_L  'less than or equal to' constraint; XPRB_G  'greater than or equal to' constraint; XPRB_E  an equality; XPRB_N  a non-binding row (objective function).

Return value

0 if function executed successfully, 1 otherwise.

Example

XPRBprob prob;
XPRBctr ctr1;
   ...
ctr1 = XPRBnewctr(prob, "r1", XPRB_E);
XPRBsetctrtype(ctr1, XPRB_L);

This changes ctr1 to a `less than or equal to' constraint.

Further information

This function changes the type of a previously defined constraint to inequality, equation or non-binding. Function XPRBsetrange has to be used for changing the constraint to a ranged constraint. If a ranged constraint is changed back to some other type with this function, its upper bound becomes the right hand side value.

Related topics

XPRBgetctrtype, XPRBnewctr, XPRBsetrange, XPRBsetterm.

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