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XPRBgetvarrng

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Purpose

Get ranging information for a variable.

Synopsis

double XPRBgetvarrng(XPRBvar var, int rngtype);

Arguments

var	Reference to variable.
rngtype	The type of ranging information sought. This is one of: XPRB_UPACT  upper activity; XPRB_LOACT  lower activity; XPRB_UUP  upper unit cost; XPRB_UDN  lower unit cost XPRB_UCOST  upper cost; XPRB_LCOST  lower cost.

Return value

Ranging information of the required type.

Example

This example retrieves the upper cost value for a variable.

XPRBprob expl2;
XPRBvar x1;
double ucval;
expl2 = XPRBnewprob("example2");
x1 = XPRBnewvar(expl2, XPRB_UI, "abc3", 1, 100); 
 ...
XPRBsolve("expl2, l"); 
ucval = XPRBgetvarrng(x1, XPRB_UCOST);

Further information

This method can only be used after solving an LP problem. Ranging information for MIP problems can be obtained by fixing all discrete variables to their solution values and re-solving the resulting LP problem.

Related topics

XPRBnewvar, XPRBgetctrrng.

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