isl_multi_zero_templ.c

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/*
 * Copyright 2012      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/space.h>
#include <isl/local_space.h>
 
#include <isl_multi_macro.h>
 
/* Construct a multi expression in the given space with value zero in
 * each of the output dimensions.
 */
__isl_give MULTI(BASE) *FN(MULTI(BASE),zero)(__isl_take isl_space *space)
{
  isl_size n;
  MULTI(BASE) *multi;
 
  n = isl_space_dim(space , isl_dim_out);
  if (n < 0)
    goto error;
 
  multi = FN(MULTI(BASE),alloc)(isl_space_copy(space));
 
  if (!n)
    isl_space_free(space);
  else {
    int i;
    isl_local_space *ls;
    EL *el;
 
    space = isl_space_domain(space);
    ls = isl_local_space_from_space(space);
    el = FN(EL,zero_on_domain)(ls);
 
    for (i = 0; i < n; ++i)
      multi = FN(FN(MULTI(BASE),set),BASE)(multi, i,
                  FN(EL,copy)(el));
 
    FN(EL,free)(el);
  }
 
  return multi;
error:
  isl_space_free(space);
  return NULL;
}
 
#include "isl_multi_zero_space_templ.c"