1 /* mpq_set_si(dest,ulong_num,ulong_den) -- Set DEST to the retional number
4 Copyright (C) 1991 Free Software Foundation, Inc.
6 This file is part of the GNU MP Library.
8 The GNU MP Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 The GNU MP Library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with the GNU MP Library; see the file COPYING. If not, write to
20 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
25 static unsigned long int
27 unsigned long int x, y;
42 mpq_set_si (MP_RAT *dest, signed long int num, unsigned long int den)
44 mpq_set_si (dest, num, den)
47 unsigned long int den;
51 unsigned long int abs_num;
57 /* Canonicalize 0/d to 0/1. */
63 /* Remove any common factor in NUM and DEN. */
64 /* Pass DEN as the second argument to gcd, in order to make the
65 gcd function divide by zero if DEN is zero. */
66 g = gcd (abs_num, den);
70 dest->num.d[0] = abs_num;
71 dest->num.size = num > 0 ? 1 : -1;