itom.c
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上传日期:2022-08-06
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- /* itom -- BSD compatible allocate and initiate a MINT.
- Copyright 1991, 1994, 1995, 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/. */
- #include "mp.h"
- #include "gmp.h"
- #include "gmp-impl.h"
- MINT *
- itom (signed short int n)
- {
- MINT *x;
- mp_ptr xp;
- x = (MINT *) (*__gmp_allocate_func) (sizeof (MINT));
- x->_mp_alloc = 1;
- x->_mp_d = xp = (mp_ptr) (*__gmp_allocate_func) (BYTES_PER_MP_LIMB);
- if (n > 0)
- {
- x->_mp_size = 1;
- xp[0] = n;
- }
- else if (n < 0)
- {
- x->_mp_size = -1;
- xp[0] = (unsigned short) -n;
- }
- else
- x->_mp_size = 0;
- return x;
- }