get_num.c
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上传日期:2022-08-06
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- /* mpq_get_num(num,rat_src) -- Set NUM to the numerator of RAT_SRC.
- Copyright 1991, 1994, 1995, 2001 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"
- void
- mpq_get_num (MP_INT *num, const MP_RAT *src)
- {
- mp_size_t size = src->_mp_num._mp_size;
- mp_size_t abs_size = ABS (size);
- if (num->_mp_alloc < abs_size)
- _mpz_realloc (num, abs_size);
- MPN_COPY (num->_mp_d, src->_mp_num._mp_d, abs_size);
- num->_mp_size = size;
- }