/*

 * Copyright 2013      Ecole Normale Superieure

 *

 * Use of this software is governed by the MIT license

 *

 * Written by Sven Verdoolaege,

 * Ecole Normale Superieure, 45 rue d'Ulm, 75230 Paris, France

 */

#include <isl_multi_macro.h>

/* Coalesce the elements of "multi".

 *

 * Note that such coalescing does not change the meaning of "multi"

 * so there is no need to cow.  We do need to be careful not to

 * destroy any other copies of "multi" in case of failure.

 */

__isl_give MULTI(BASE) *FN(MULTI(BASE),coalesce)(__isl_take MULTI(BASE) *multi)

{

	int i;

	if (!multi)

		return NULL;

	for (i = 0; i < multi->n; ++i) {

		EL *el = FN(EL,copy)(multi->p[i]);

		el = FN(EL,coalesce)(el);

		if (!el)

			return FN(MULTI(BASE),free)(multi);

		FN(EL,free)(multi->p[i]);

		multi->p[i] = el;

	}

	return multi;

}