set.c
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上传日期:2022-08-06
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- /* mpz_set (dest_integer, src_integer) -- Assign DEST_INTEGER from SRC_INTEGER.
- Copyright 1991, 1993, 1994, 1995, 2000 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"
- #ifdef BERKELEY_MP
- #include "mp.h"
- #define FUNCTION move
- #define ARGUMENTS mpz_srcptr u, mpz_ptr w
- #else
- #define FUNCTION mpz_set
- #define ARGUMENTS mpz_ptr w, mpz_srcptr u
- #endif
- void
- FUNCTION (ARGUMENTS)
- {
- mp_ptr wp, up;
- mp_size_t usize, size;
- usize = u->_mp_size;
- size = ABS (usize);
- if (w->_mp_alloc < size)
- _mpz_realloc (w, size);
- wp = w->_mp_d;
- up = u->_mp_d;
- MPN_COPY (wp, up, size);
- w->_mp_size = usize;
- }