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getrsol

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Purpose

Return the slack or dual solution value of a constraint

Synopsis

function getcsol(rIndex:integer, vType:integer) :real

Arguments

rIndex	the index of a constraint in the problem
vType	integer indicating the type of information returned: 0 slack value 1 dual solution value

Return value

The slack (if vType=0) or the dual solution value (if vType=1) of the constraint whose index is given as rIndex. Zero will be returned if there is no solution or if rIndex is outside the range of valid indices.

Example

The following code fragment solves a problem and retrieves the values of constraint number 42:

SLPmaximize
writeln("Constraint 42 slack=",getrsol(42,0))
writeln("Constraint 42 dual value=",getrsol(42,1))

Further information

The constraint index can be obtained from the constraint name by using SLPgetindex.

Related topics

getslack, getcsol, getsol

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