1 /*
2  * Copyright 2008-2009 Katholieke Universiteit Leuven
3  *
4  * Use of this software is governed by the MIT license
5  *
6  * Written by Sven Verdoolaege, K.U.Leuven, Departement
7  * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
8  */
9 
10 #include <isl_int.h>
11 
isl_gmp_hash(mpz_t v,uint32_t hash)12 uint32_t isl_gmp_hash(mpz_t v, uint32_t hash)
13 {
14 	int sa = v[0]._mp_size;
15 	int abs_sa = sa < 0 ? -sa : sa;
16 	unsigned char *data = (unsigned char *)v[0]._mp_d;
17 	unsigned char *end = data + abs_sa * sizeof(v[0]._mp_d[0]);
18 
19 	if (sa < 0)
20 		isl_hash_byte(hash, 0xFF);
21 	for (; data < end; ++data)
22 		isl_hash_byte(hash, *data);
23 	return hash;
24 }
25