version 1.1, 2000/01/10 15:35:26 |
version 1.1.1.3, 2003/08/25 16:06:34 |
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/* 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. |
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Copyright (C) 1991, 1994, 1995, 1996 Free Software Foundation, Inc. |
Copyright 1991, 1994, 1995, 1996, 2000, 2001 Free Software Foundation, Inc. |
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This file is part of the GNU MP Library. |
This file is part of the GNU MP Library. |
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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. |
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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. |
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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. */ |
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Line 24 MA 02111-1307, USA. */ |
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#include "gmp-impl.h" |
#include "gmp-impl.h" |
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void |
void |
#if __STDC__ |
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mpq_canonicalize (MP_RAT *op) |
mpq_canonicalize (MP_RAT *op) |
#else |
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mpq_canonicalize (op) |
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MP_RAT *op; |
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#endif |
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{ |
{ |
mpz_t gcd; |
mpz_t gcd; |
TMP_DECL (marker); |
TMP_DECL (marker); |
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if (op->_mp_den._mp_size == 0) |
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DIVIDE_BY_ZERO; |
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TMP_MARK (marker); |
TMP_MARK (marker); |
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/* ??? Dunno if the 1+ is needed. */ |
/* ??? Dunno if the 1+ is needed. */ |
Line 41 mpq_canonicalize (op) |
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Line 39 mpq_canonicalize (op) |
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ABS (op->_mp_den._mp_size))); |
ABS (op->_mp_den._mp_size))); |
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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); |
{ |
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mpz_divexact_gcd (&(op->_mp_num), &(op->_mp_num), gcd); |
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mpz_divexact_gcd (&(op->_mp_den), &(op->_mp_den), gcd); |
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} |
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if (op->_mp_den._mp_size < 0) |
if (op->_mp_den._mp_size < 0) |
{ |
{ |