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gettype

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Purpose

Returns the type of a general constraint

Synopsis

function gettype(c:genctr) :integer

Argument

c	a general constraint

Return value

The type of the constraint. This will be one of:

XPRM_CTYPE_LEQ

XPRM_CTYPE_EQ

=

XPRM_CTYPE_GEQ

XPRM_CTYPE_UNCONS

not constraining or not defined

Example

The following code fragment retrieves the type of a previously-defined constraint:

declarations
  c1, c2: genctr
  x, y: mpvar
end-declarations

  c1:= x^2 + y^2 <= 4 - x
  ...
  case (gettype(c1)) of
    XPRM_CTYPE_LEQ: writeln("c1 is less than or equal")
    XPRM_CTYPE_EQ: writeln("c1 is equal")
    XPRM_CTYPE_GEQ: writeln("c1 is greater than or equal")
    XPRM_CTYPE_UNCONS: writeln("c1 is not constraining")
  end-case

Further information

The problem does not need to be loaded in order to retrieve the type of a constraint.

Related topics

settype

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