File: isl_pw_neg_templ.c

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/*
 * 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_pw_macro.h>

__isl_give PW *FN(PW,neg)(__isl_take PW *pw)
{
	int i;

	if (!pw)
		return NULL;

	if (FN(PW,IS_ZERO)(pw))
		return pw;

	pw = FN(PW,cow)(pw);
	if (!pw)
		return NULL;

	for (i = 0; i < pw->n; ++i) {
		pw->p[i].FIELD = FN(EL,neg)(pw->p[i].FIELD);
		if (!pw->p[i].FIELD)
			return FN(PW,free)(pw);
	}

	return pw;
}