mirror of https://github.com/macssh/macssh.git
83 lines
2.2 KiB
C
Executable File
83 lines
2.2 KiB
C
Executable File
/* mpz_mul_ui/si (product, multiplier, small_multiplicand) -- Set PRODUCT to
|
|
MULTIPLICATOR times SMALL_MULTIPLICAND.
|
|
|
|
Copyright (C) 1991, 1993, 1994, 1996, 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 2.1 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; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
|
MA 02111-1307, USA. */
|
|
|
|
#include "gmp.h"
|
|
#include "gmp-impl.h"
|
|
|
|
#define OPERATION_mul_si
|
|
|
|
#ifdef OPERATION_mul_ui
|
|
#define FUNCTION mpz_mul_ui
|
|
#define MULTIPLICAND_UNSIGNED unsigned
|
|
#define MULTIPLICAND_ABS(x) x
|
|
#else
|
|
#ifdef OPERATION_mul_si
|
|
#define FUNCTION mpz_mul_si
|
|
#define MULTIPLICAND_UNSIGNED
|
|
#define MULTIPLICAND_ABS(x) ABS(x)
|
|
#else
|
|
Error, error, unrecognised OPERATION
|
|
#endif
|
|
#endif
|
|
|
|
|
|
void
|
|
#if __STDC__
|
|
FUNCTION (mpz_ptr prod, mpz_srcptr mult,
|
|
MULTIPLICAND_UNSIGNED long int small_mult)
|
|
#else
|
|
FUNCTION (prod, mult, small_mult)
|
|
mpz_ptr prod;
|
|
mpz_srcptr mult;
|
|
MULTIPLICAND_UNSIGNED long int small_mult;
|
|
#endif
|
|
{
|
|
mp_size_t size = mult->_mp_size;
|
|
mp_size_t sign_product = size;
|
|
mp_limb_t cy;
|
|
mp_size_t prod_size;
|
|
mp_ptr prod_ptr;
|
|
|
|
if (size == 0 || small_mult == 0)
|
|
{
|
|
prod->_mp_size = 0;
|
|
return;
|
|
}
|
|
size = ABS (size);
|
|
|
|
prod_size = size + 1;
|
|
if (prod->_mp_alloc < prod_size)
|
|
_mpz_realloc (prod, prod_size);
|
|
|
|
prod_ptr = prod->_mp_d;
|
|
|
|
cy = mpn_mul_1 (prod_ptr, mult->_mp_d, size,
|
|
(mp_limb_t) MULTIPLICAND_ABS (small_mult));
|
|
if (cy != 0)
|
|
{
|
|
prod_ptr[size] = cy;
|
|
size++;
|
|
}
|
|
|
|
prod->_mp_size = ((sign_product < 0) ^ (small_mult < 0)) ? -size : size;
|
|
}
|