+.. _reference:
+
Module Reference
================
>>> x < y
Le(x - y + 1, 0)
-
.. method:: scaleint()
Return the expression multiplied by its lowest common denominator to make all values integer.
The universe polyhedron, whose set of constraints is always satisfiable, i.e. is empty.
+
Domains
-------
A *domain* is a union of polyhedra.
-Unlike polyhedra, domains allow exact computation of union and complementary operations.
+Unlike polyhedra, domains allow exact computation of union, subtraction and complementary operations.
.. class:: Domain(*polyhedra)
Domain(string)
.. function:: Ne(expr1, expr2[, expr3, ...])
Create the domain such that ``expr1 != expr2 != expr3 ...``.
- The result is a :class:`Domain`, not a :class:`Polyhedron`.
+ The result is a :class:`Domain` object, not a :class:`Polyhedron`.
.. function:: Ge(expr1, expr2[, expr3, ...])