isl_multi_zero_templ.c

   1 /*
   2  * Copyright 2012      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/space.h>
  11 #include <isl/local_space.h>
  12
  13 #include <isl_multi_macro.h>
  14
  15 /* Construct a multi expression in the given space with value zero in
  16  * each of the output dimensions.
  17  */
  18 __isl_give MULTI(BASE) *FN(MULTI(BASE),zero)(__isl_take isl_space *space)
  19 {
  20         int n;
  21         MULTI(BASE) *multi;
  22
  23         if (!space)
  24                 return NULL;
  25
  26         n = isl_space_dim(space , isl_dim_out);
  27         multi = FN(MULTI(BASE),alloc)(isl_space_copy(space));
  28
  29         if (!n)
  30                 isl_space_free(space);
  31         else {
  32                 int i;
  33                 isl_local_space *ls;
  34                 EL *el;
  35
  36                 space = isl_space_domain(space);
  37                 ls = isl_local_space_from_space(space);
  38                 el = FN(EL,zero_on_domain)(ls);
  39
  40                 for (i = 0; i < n; ++i)
  41                         multi = FN(FN(MULTI(BASE),set),BASE)(multi, i,
  42                                                             FN(EL,copy)(el));
  43
  44                 FN(EL,free)(el);
  45         }
  46
  47         return multi;
  48 }