| /* |
| * Copyright 2010 INRIA Saclay |
| * |
| * Use of this software is governed by the MIT license |
| * |
| * Written by Sven Verdoolaege, |
| * INRIA Saclay - Ile-de-France, Parc Club Orsay Universite, |
| * ZAC des vignes, 4 rue Jacques Monod, 91893 Orsay, France |
| */ |
| |
| #include "isl_union_macro.h" |
| |
| /* Subtract "u2" from "u1" and return the result. |
| * |
| * If the base expressions have a default zero value, then |
| * reuse isl_union_*_add to ensure the result |
| * is computed on the union of the domains of "u1" and "u2". |
| * Otherwise, compute the result directly on their shared domain. |
| */ |
| __isl_give UNION *FN(UNION,sub)(__isl_take UNION *u1, __isl_take UNION *u2) |
| { |
| #if DEFAULT_IS_ZERO |
| return FN(UNION,add)(u1, FN(UNION,neg)(u2)); |
| #else |
| return FN(UNION,match_bin_op)(u1, u2, &FN(PART,sub)); |
| #endif |
| } |
