1 /* mpz_cdiv_q_ui -- Division rounding the quotient towards +infinity. The
2 remainder gets the opposite sign as the denominator. In order to make it
3 always fit into the return type, the negative of the true remainder is
6 Copyright (C) 1994, 1996 Free Software Foundation, Inc.
8 This file is part of the GNU MP Library.
10 The GNU MP Library is free software; you can redistribute it and/or modify
11 it under the terms of the GNU Library General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or (at your
13 option) any later version.
15 The GNU MP Library is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
17 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
18 License for more details.
20 You should have received a copy of the GNU Library General Public License
21 along with the GNU MP Library; see the file COPYING.LIB. If not, write to
22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
23 MA 02111-1307, USA. */
30 mpz_cdiv_q_ui (mpz_ptr quot, mpz_srcptr dividend, unsigned long int divisor)
32 mpz_cdiv_q_ui (quot, dividend, divisor)
35 unsigned long int divisor;
38 mp_size_t dividend_size;
41 mp_limb_t remainder_limb;
43 dividend_size = dividend->_mp_size;
44 size = ABS (dividend_size);
46 if (quot->_mp_alloc < size)
47 _mpz_realloc (quot, size);
49 quot_ptr = quot->_mp_d;
51 remainder_limb = mpn_divmod_1 (quot_ptr, dividend->_mp_d, size,
54 if (remainder_limb != 0 && dividend_size >= 0)
56 mpn_add_1 (quot_ptr, quot_ptr, size, (mp_limb_t) 1);
57 remainder_limb = divisor - remainder_limb;
60 size -= size != 0 && quot_ptr[size - 1] == 0;
61 quot->_mp_size = dividend_size >= 0 ? size : -size;
63 return remainder_limb;