Line data    Source code

       1             : /*
       2             :  * Copyright 2013      Ecole Normale Superieure
       3             :  *
       4             :  * Use of this software is governed by the MIT license
       5             :  *
       6             :  * Written by Sven Verdoolaege,
       7             :  * Ecole Normale Superieure, 45 rue d'Ulm, 75230 Paris, France
       8             :  */
       9             : 
      10             : #include <isl_multi_macro.h>
      11             : 
      12             : /* Coalesce the elements of "multi".
      13             :  *
      14             :  * Note that such coalescing does not change the meaning of "multi"
      15             :  * so there is no need to cow.  We do need to be careful not to
      16             :  * destroy any other copies of "multi" in case of failure.
      17             :  */
      18           0 : __isl_give MULTI(BASE) *FN(MULTI(BASE),coalesce)(__isl_take MULTI(BASE) *multi)
      19             : {
      20             :         int i;
      21             : 
      22           0 :         if (!multi)
      23           0 :                 return NULL;
      24             : 
      25           0 :         for (i = 0; i < multi->n; ++i) {
      26           0 :                 EL *el = FN(EL,copy)(multi->u.p[i]);
      27           0 :                 el = FN(EL,coalesce)(el);
      28           0 :                 if (!el)
      29           0 :                         return FN(MULTI(BASE),free)(multi);
      30           0 :                 FN(EL,free)(multi->u.p[i]);
      31           0 :                 multi->u.p[i] = el;
      32             :         }
      33             : 
      34           0 :         return multi;
      35             : }