| version 1.1.1.1, 2000/01/10 15:35:26 |
version 1.1.1.3, 2003/08/25 16:06:34 |
|
|
| /* mpq_canonicalize(op) -- Remove common factors of the denominator and |
/* mpq_canonicalize(op) -- Remove common factors of the denominator and |
| numerator in OP. |
numerator in OP. |
| |
|
| Copyright (C) 1991, 1994, 1995, 1996 Free Software Foundation, Inc. |
Copyright 1991, 1994, 1995, 1996, 2000, 2001 Free Software Foundation, Inc. |
| |
|
| This file is part of the GNU MP Library. |
This file is part of the GNU MP Library. |
| |
|
| The GNU MP Library is free software; you can redistribute it and/or modify |
The GNU MP Library is free software; you can redistribute it and/or modify |
| it under the terms of the GNU Library General Public License as published by |
it under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or (at your |
the Free Software Foundation; either version 2.1 of the License, or (at your |
| option) any later version. |
option) any later version. |
| |
|
| The GNU MP Library is distributed in the hope that it will be useful, but |
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 |
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| License for more details. |
License for more details. |
| |
|
| You should have received a copy of the GNU Library General Public License |
You should have received a copy of the GNU Lesser General Public License |
| along with the GNU MP Library; see the file COPYING.LIB. If not, write to |
along with the GNU MP Library; see the file COPYING.LIB. If not, write to |
| the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| MA 02111-1307, USA. */ |
MA 02111-1307, USA. */ |
| Line 24 MA 02111-1307, USA. */ |
|
| Line 24 MA 02111-1307, USA. */ |
|
| #include "gmp-impl.h" |
#include "gmp-impl.h" |
| |
|
| void |
void |
| #if __STDC__ |
|
| mpq_canonicalize (MP_RAT *op) |
mpq_canonicalize (MP_RAT *op) |
| #else |
|
| mpq_canonicalize (op) |
|
| MP_RAT *op; |
|
| #endif |
|
| { |
{ |
| mpz_t gcd; |
mpz_t gcd; |
| TMP_DECL (marker); |
TMP_DECL (marker); |
| |
|
| |
if (op->_mp_den._mp_size == 0) |
| |
DIVIDE_BY_ZERO; |
| |
|
| TMP_MARK (marker); |
TMP_MARK (marker); |
| |
|
| /* ??? Dunno if the 1+ is needed. */ |
/* ??? Dunno if the 1+ is needed. */ |
| Line 41 mpq_canonicalize (op) |
|
| Line 39 mpq_canonicalize (op) |
|
| ABS (op->_mp_den._mp_size))); |
ABS (op->_mp_den._mp_size))); |
| |
|
| mpz_gcd (gcd, &(op->_mp_num), &(op->_mp_den)); |
mpz_gcd (gcd, &(op->_mp_num), &(op->_mp_den)); |
| mpz_divexact (&(op->_mp_num), &(op->_mp_num), gcd); |
if (! MPZ_EQUAL_1_P (gcd)) |
| mpz_divexact (&(op->_mp_den), &(op->_mp_den), gcd); |
{ |
| |
mpz_divexact_gcd (&(op->_mp_num), &(op->_mp_num), gcd); |
| |
mpz_divexact_gcd (&(op->_mp_den), &(op->_mp_den), gcd); |
| |
} |
| |
|
| if (op->_mp_den._mp_size < 0) |
if (op->_mp_den._mp_size < 0) |
| { |
{ |