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/********************* */
/*! \file gmp_util.h
** \verbatim
** Top contributors (to current version):
** Dejan Jovanovic, Morgan Deters, Andres Noetzli
** This file is part of the CVC4 project.
** Copyright (c) 2009-2018 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief [[ Add one-line brief description here ]]
**
** [[ Add lengthier description here ]]
** \todo document this file
**/
#include "cvc4_public.h"
#ifndef __CVC4__GMP_UTIL_H
#define __CVC4__GMP_UTIL_H
/*
* Older versions of GMP in combination with newer versions of GCC and C++11
* cause errors: https://gcc.gnu.org/gcc-4.9/porting_to.html
* Including <cstddef> is a workaround for this issue.
*/
#include <cstddef>
#include <gmpxx.h>
namespace CVC4 {
/** Hashes the gmp integer primitive in a word by word fashion. */
inline size_t gmpz_hash(const mpz_t toHash) {
size_t hash = 0;
for (int i = 0, n = mpz_size(toHash); i < n; ++i){
mp_limb_t limb = mpz_getlimbn(toHash, i);
hash = hash * 2;
hash = hash xor limb;
}
return hash;
}/* gmpz_hash() */
}/* CVC4 namespace */
#endif /* __CVC4__GMP_UTIL_H */
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