-/* mpq_set_si(dest,ulong_num,ulong_den) -- Set DEST to the retional number
- ULONG_NUM/ULONG_DEN.
-
-Copyright (C) 1991 Free Software Foundation, Inc.
-
-This file is part of the GNU MP Library.
-
-The GNU MP Library is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-The GNU MP Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with the GNU MP Library; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#include "gmp.h"
-#include "gmp-impl.h"
-
-static unsigned long int
-gcd (x, y)
- unsigned long int x, y;
-{
- for (;;)
- {
- x = x % y;
- if (x == 0)
- return y;
- y = y % x;
- if (y == 0)
- return x;
- }
-}
-
-void
-#ifdef __STDC__
-mpq_set_si (MP_RAT *dest, signed long int num, unsigned long int den)
-#else
-mpq_set_si (dest, num, den)
- MP_RAT *dest;
- signed long int num;
- unsigned long int den;
-#endif
-{
- unsigned long int g;
- unsigned long int abs_num;
-
- abs_num = ABS (num);
-
- if (num == 0)
- {
- /* Canonicalize 0/d to 0/1. */
- den = 1;
- dest->num.size = 0;
- }
- else
- {
- /* Remove any common factor in NUM and DEN. */
- /* Pass DEN as the second argument to gcd, in order to make the
- gcd function divide by zero if DEN is zero. */
- g = gcd (abs_num, den);
- abs_num /= g;
- den /= g;
-
- dest->num.d[0] = abs_num;
- dest->num.size = num > 0 ? 1 : -1;
- }
-
- dest->den.d[0] = den;
- dest->den.size = 1;
-}