1/* mpq_set_ui(dest,ulong_num,ulong_den) -- Set DEST to the rational number
2   ULONG_NUM/ULONG_DEN.
3
4Copyright 1991, 1994, 1995, 2001, 2002, 2003 Free Software Foundation, Inc.
5
6This file is part of the GNU MP Library.
7
8The GNU MP Library is free software; you can redistribute it and/or modify
9it under the terms of the GNU Lesser General Public License as published by
10the Free Software Foundation; either version 3 of the License, or (at your
11option) any later version.
12
13The GNU MP Library is distributed in the hope that it will be useful, but
14WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
16License for more details.
17
18You should have received a copy of the GNU Lesser General Public License
19along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
20
21#include "gmp.h"
22#include "gmp-impl.h"
23
24void
25mpq_set_ui (MP_RAT *dest, unsigned long int num, unsigned long int den)
26{
27  if (GMP_NUMB_BITS < BITS_PER_ULONG)
28    {
29      if (num == 0)  /* Canonicalize 0/d to 0/1.  */
30        den = 1;
31      mpz_set_ui (mpq_numref (dest), num);
32      mpz_set_ui (mpq_denref (dest), den);
33      return;
34    }
35
36  if (num == 0)
37    {
38      /* Canonicalize 0/n to 0/1.  */
39      den = 1;
40      dest->_mp_num._mp_size = 0;
41    }
42  else
43    {
44      dest->_mp_num._mp_d[0] = num;
45      dest->_mp_num._mp_size = 1;
46    }
47
48  dest->_mp_den._mp_d[0] = den;
49  dest->_mp_den._mp_size = (den != 0);
50}
51