1 /* mpz_tdiv_ui(dividend, divisor_limb) -- Return DIVDEND mod DIVISOR_LIMB.
3 Copyright 1991, 1993, 1994, 1996, 1997, 1998, 2001, 2002, 2004, 2005 Free
4 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 Lesser General Public License as published by
10 the Free Software Foundation; either version 3 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 Lesser General Public
16 License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
26 mpz_tdiv_ui (mpz_srcptr dividend, unsigned long int divisor)
44 #if BITS_PER_ULONG > GMP_NUMB_BITS /* avoid warnings about shift amount */
45 if (divisor > GMP_NUMB_MAX)
47 mp_limb_t dp[2], rp[2];
52 if (nn == 1) /* tdiv_qr requirements; tested above for 0 */
59 dp[0] = divisor & GMP_NUMB_MASK;
60 dp[1] = divisor >> GMP_NUMB_BITS;
61 qp = TMP_ALLOC_LIMBS (nn - 2 + 1);
62 mpn_tdiv_qr (qp, rp, (mp_size_t) 0, np, nn, dp, (mp_size_t) 2);
64 rl = rp[0] + (rp[1] << GMP_NUMB_BITS);
65 rn = 2 - (rp[1] == 0); rn -= (rp[rn - 1] == 0);
70 rl = mpn_mod_1 (np, nn, (mp_limb_t) divisor);