1 /* mpz_mul_ui(product, multiplier, small_multiplicand) -- Set
2 PRODUCT to MULTIPLICATOR times SMALL_MULTIPLICAND.
4 Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc.
6 This file is part of the GNU MP Library.
8 The GNU MP Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Library General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or (at your
11 option) any later version.
13 The GNU MP Library is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
16 License for more details.
18 You should have received a copy of the GNU Library General Public License
19 along with the GNU MP Library; see the file COPYING.LIB. If not, write to
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
21 MA 02111-1307, USA. */
28 mpz_mul_ui (mpz_ptr prod, mpz_srcptr mult, unsigned long int small_mult)
30 mpz_mul_ui (prod, mult, small_mult)
33 unsigned long int small_mult;
36 mp_size_t size = mult->_mp_size;
37 mp_size_t sign_product = size;
44 if (size == 0 || small_mult == 0)
51 if (prod->_mp_alloc < prod_size)
52 _mpz_realloc (prod, prod_size);
54 prod_ptr = prod->_mp_d;
56 cy = mpn_mul_1 (prod_ptr, mult->_mp_d, size, (mp_limb_t) small_mult);
63 prod->_mp_size = sign_product >= 0 ? size : -size;