1 /* Add two limb vectors of equal, non-zero length for PowerPC.
2 Copyright (C) 1997-2018 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
21 /* mp_limb_t mpn_add_n (mp_ptr res_ptr, mp_srcptr s1_ptr, mp_srcptr s2_ptr,
23 Calculate s1+s2 and put result in res_ptr; return carry, 0 or 1. */
25 /* Note on optimisation: This code is optimal for the 601. Almost every other
26 possible 2-unrolled inner loop will not be. Also, watch out for the
29 EALIGN (__mpn_add_n, 3, 0)
31 /* Set up for loop below. */
38 /* Clear the carry. */
40 /* Adjust pointers for loop. */
54 /* Align start of loop to an odd word boundary to guarantee that the
55 last two words can be fetched in one access (for 601). */
65 /* Return the carry. */