1/* Reference rational routines.
2
3Copyright 2001 Free Software Foundation, Inc.
4
5This file is part of the GNU MP Library.
6
7The GNU MP Library is free software; you can redistribute it and/or modify
8it under the terms of the GNU Lesser General Public License as published by
9the Free Software Foundation; either version 3 of the License, or (at your
10option) any later version.
11
12The GNU MP Library is distributed in the hope that it will be useful, but
13WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
15License for more details.
16
17You should have received a copy of the GNU Lesser General Public License
18along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
19
20#include "gmp.h"
21#include "gmp-impl.h"
22#include "tests.h"
23
24
25void
26refmpq_add (mpq_ptr w, mpq_srcptr x, mpq_srcptr y)
27{
28  mpz_mul    (mpq_numref(w), mpq_numref(x), mpq_denref(y));
29  mpz_addmul (mpq_numref(w), mpq_denref(x), mpq_numref(y));
30  mpz_mul    (mpq_denref(w), mpq_denref(x), mpq_denref(y));
31  mpq_canonicalize (w);
32}
33
34void
35refmpq_sub (mpq_ptr w, mpq_srcptr x, mpq_srcptr y)
36{
37  mpz_mul    (mpq_numref(w), mpq_numref(x), mpq_denref(y));
38  mpz_submul (mpq_numref(w), mpq_denref(x), mpq_numref(y));
39  mpz_mul    (mpq_denref(w), mpq_denref(x), mpq_denref(y));
40  mpq_canonicalize (w);
41}
42