Purpose
Return the primal solution value of a constraint, or the calculated value of a
general expression
Synopsis
function getsol(c:genctr | g:gexp) :real
Arguments
|
c
|
a general constraint
|
|
g
|
a general expression
|
Return value
For a general constraint, the primal solution value of the constraint, or zero if
there is no solution or the constraint is not part of the current problem.
For a general expression, the evaluation of the expression using the solution values of the
variables; zero is used as the value of a variable if it is not in the current problem,
or if there is no solution.
Example
The following example solves a problem and retrieves the values of a
constraint and of a general expression:
declarations
c1, c2: genctr
x, y: mpvar
end-declarations
x <= 10
y <= 10
c1:= x^2 + y^2 <= 4 - x
c2:= x*y >= 1
SLPloadprob(x+y)
SLPmaximize
writeln("c1 solution value=",getsol(c1))
writeln("x^2=",getsol(x^2))
Further information
This function requires the existence of a solution to the SLP problem. If
it is called at an intermediate point during an optimization,
SLPsetprobstat
may be needed to ensure that solution values can be obtained.
Related topics
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