isl_pw_un_op_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 /* Apply "fn" to each of the base expressions of "pw".
  14  * The function is assumed to have no effect on the default value
  15  * (i.e., zero for those objects with a default value).
  16  */
  17 static __isl_give PW *FN(PW,un_op)(__isl_take PW *pw,
  18         __isl_give EL *(*fn)(__isl_take EL *el))
  19 {
  20         isl_size n;
  21         int i;
  22
  23         n = FN(PW,n_piece)(pw);
  24         if (n < 0)
  25                 return FN(PW,free)(pw);
  26
  27         for (i = 0; i < n; ++i) {
  28                 EL *el;
  29
  30                 el = FN(PW,take_base_at)(pw, i);
  31                 el = fn(el);
  32                 pw = FN(PW,restore_base_at)(pw, i, el);
  33         }
  34
  35         return pw;
  36 }