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1/*2 * Copyright 2010 INRIA Saclay3 *4 * Use of this software is governed by the MIT license5 *6 * Written by Sven Verdoolaege,7 * INRIA Saclay - Ile-de-France, Parc Club Orsay Universite,8 * ZAC des vignes, 4 rue Jacques Monod, 91893 Orsay, France9 */10 11#include "isl_union_macro.h"12 13/* Subtract "u2" from "u1" and return the result.14 *15 * If the base expressions have a default zero value, then16 * reuse isl_union_*_add to ensure the result17 * is computed on the union of the domains of "u1" and "u2".18 * Otherwise, compute the result directly on their shared domain.19 */20__isl_give UNION *FN(UNION,sub)(__isl_take UNION *u1, __isl_take UNION *u2)21{22#if DEFAULT_IS_ZERO23 return FN(UNION,add)(u1, FN(UNION,neg)(u2));24#else25 return FN(UNION,match_bin_op)(u1, u2, &FN(PART,sub));26#endif27}28