mullo_basecase.c
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上传日期:2022-08-06
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- /* mpn_mullo_basecase -- Internal routine to multiply two natural
- numbers of length m and n and return the low part.
- THIS IS AN INTERNAL FUNCTION WITH A MUTABLE INTERFACE. IT IS ONLY
- SAFE TO REACH THIS FUNCTION THROUGH DOCUMENTED INTERFACES.
- Copyright (C) 2000, 2002, 2004 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 3 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. If not, see http://www.gnu.org/licenses/. */
- #include "gmp.h"
- #include "gmp-impl.h"
- /*
- FIXME: Should use mpn_addmul_2 (and higher).
- */
- void
- mpn_mullo_basecase (mp_ptr rp, mp_srcptr up, mp_srcptr vp, mp_size_t n)
- {
- mp_size_t i;
- mpn_mul_1 (rp, up, n, vp[0]);
- for (i = 1; i < n; i++)
- mpn_addmul_1 (rp + i, up, n - i, vp[i]);
- }