isl_pw_neg_templ.c

   1 /*
   2  * Copyright 2010      INRIA Saclay
   3  *
   4  * Use of this software is governed by the MIT license
   5  *
   6  * Written by Sven Verdoolaege, INRIA Saclay - Ile-de-France,
   7  * Parc Club Orsay Universite, ZAC des vignes, 4 rue Jacques Monod,
   8  * 91893 Orsay, France
   9  */
  10
  11 #include <isl_pw_macro.h>
  12
  13 __isl_give PW *FN(PW,neg)(__isl_take PW *pw)
  14 {
  15         int i;
  16
  17         if (!pw)
  18                 return NULL;
  19
  20         if (FN(PW,IS_ZERO)(pw))
  21                 return pw;
  22
  23         pw = FN(PW,cow)(pw);
  24         if (!pw)
  25                 return NULL;
  26
  27         for (i = 0; i < pw->n; ++i) {
  28                 pw->p[i].FIELD = FN(EL,neg)(pw->p[i].FIELD);
  29                 if (!pw->p[i].FIELD)
  30                         return FN(PW,free)(pw);
  31         }
  32
  33         return pw;
  34 }