isl_pw_hash.c

   1 /*
   2  * Copyright 2016      Sven Verdoolaege
   3  *
   4  * Use of this software is governed by the MIT license
   5  *
   6  * Written by Sven Verdoolaege
   7  */
   8
   9 #include <isl_pw_macro.h>
  10 #include <isl/hash.h>
  11
  12 /* Return a hash value that digests "pw".
  13  */
  14 uint32_t FN(PW,get_hash)(__isl_keep PW *pw)
  15 {
  16         int i;
  17         uint32_t hash;
  18
  19         if (!pw)
  20                 return 0;
  21
  22         hash = isl_hash_init();
  23         for (i = 0; i < pw->n; ++i) {
  24                 uint32_t set_hash, el_hash;
  25
  26                 set_hash = isl_set_get_hash(pw->p[i].set);
  27                 isl_hash_hash(hash, set_hash);
  28                 el_hash = FN(EL,get_hash)(pw->p[i].FIELD);
  29                 isl_hash_hash(hash, el_hash);
  30         }
  31
  32         return hash;
  33 }