equal.c
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上传日期:2022-08-06
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- /* mpq_equal(u,v) -- Compare U, V. Return non-zero if they are equal, zero
- if they are non-equal.
- Copyright 1996, 2001, 2002 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 Lesser General Public License as published by
- the Free Software Foundation; either version 3 of the License, 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 Lesser General Public
- License for more details.
- You should have received a copy of the GNU Lesser General Public License
- along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
- #include "gmp.h"
- #include "gmp-impl.h"
- int
- mpq_equal (mpq_srcptr op1, mpq_srcptr op2)
- {
- mp_size_t num1_size, num2_size, den1_size, den2_size, i;
- mp_srcptr num1_ptr, num2_ptr, den1_ptr, den2_ptr;
- /* need fully canonical for correct results */
- ASSERT_MPQ_CANONICAL (op1);
- ASSERT_MPQ_CANONICAL (op2);
- num1_size = op1->_mp_num._mp_size;
- num2_size = op2->_mp_num._mp_size;
- if (num1_size != num2_size)
- return 0;
- num1_ptr = op1->_mp_num._mp_d;
- num2_ptr = op2->_mp_num._mp_d;
- num1_size = ABS (num1_size);
- for (i = 0; i < num1_size; i++)
- if (num1_ptr[i] != num2_ptr[i])
- return 0;
- den1_size = op1->_mp_den._mp_size;
- den2_size = op2->_mp_den._mp_size;
- if (den1_size != den2_size)
- return 0;
- den1_ptr = op1->_mp_den._mp_d;
- den2_ptr = op2->_mp_den._mp_d;
- for (i = 0; i < den1_size; i++)
- if (den1_ptr[i] != den2_ptr[i])
- return 0;
- return 1;
- }