abs.c
上传用户:qaz666999
上传日期:2022-08-06
资源大小:2570k
文件大小:1k
- /* mpq_abs -- absolute value of a rational.
- Copyright 2000, 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/. */
- #define __GMP_FORCE_mpq_abs 1
- #include "gmp.h"
- #include "gmp-impl.h"
- void
- mpq_abs (mpq_ptr dst, mpq_srcptr src)
- {
- mp_size_t num_size = src->_mp_num._mp_size;
- mp_size_t num_abs_size = ABS (num_size);
- if (dst != src)
- {
- mp_size_t den_size = src->_mp_den._mp_size;
- MPZ_REALLOC (mpq_numref(dst), num_abs_size);
- MPZ_REALLOC (mpq_denref(dst), den_size);
- MPN_COPY (dst->_mp_num._mp_d, src->_mp_num._mp_d, num_abs_size);
- MPN_COPY (dst->_mp_den._mp_d, src->_mp_den._mp_d, den_size);
- dst->_mp_den._mp_size = den_size;
- }
- dst->_mp_num._mp_size = num_abs_size;
- }