1 /* mpn_bdiv_dbm1c -- divide an mpn number by a divisor of B-1, where B is the
2 limb base. The dbm1c moniker means "Divisor of B Minus 1 with Carry".
4 THE FUNCTION IN THIS FILE IS INTERNAL WITH A MUTABLE INTERFACE. IT IS ONLY
5 SAFE TO REACH IT THROUGH DOCUMENTED INTERFACES. IN FACT, IT IS ALMOST
6 GUARANTEED THAT IT'LL CHANGE OR DISAPPEAR IN A FUTURE GNU MP RELEASE.
8 Copyright 2008, 2009 Free Software Foundation, Inc.
10 This file is part of the GNU MP Library.
12 The GNU MP Library is free software; you can redistribute it and/or modify
13 it under the terms of the GNU Lesser General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or (at your
15 option) any later version.
17 The GNU MP Library is distributed in the hope that it will be useful, but
18 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
19 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
20 License for more details.
22 You should have received a copy of the GNU Lesser General Public License
23 along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
31 mpn_bdiv_dbm1c (mp_ptr qp, mp_srcptr ap, mp_size_t n, mp_limb_t bd, mp_limb_t h)
33 mp_limb_t a, p0, p1, cy;
36 for (i = 0; i < n; i++)
39 umul_ppmm (p1, p0, a, bd << GMP_NAIL_BITS);
42 h = (h - p0) & GMP_NUMB_MASK;