diff options
Diffstat (limited to 'sysdeps/x86_64/ffsll.c')
-rw-r--r-- | sysdeps/x86_64/ffsll.c | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/sysdeps/x86_64/ffsll.c b/sysdeps/x86_64/ffsll.c deleted file mode 100644 index 47111ce61b..0000000000 --- a/sysdeps/x86_64/ffsll.c +++ /dev/null @@ -1,42 +0,0 @@ -/* ffsll -- find first set bit in a word, counted from least significant end. - For AMD x86-64. - This file is part of the GNU C Library. - Copyright (C) 1991-2017 Free Software Foundation, Inc. - Contributed by Ulrich Drepper <drepper@cygnus.com>. - - The GNU C 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 2.1 of the License, or (at your option) any later version. - - The GNU C 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 C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#define ffsl __something_else -#include <string.h> - -#undef ffsll - -int -ffsll (long long int x) -{ - long long int cnt; - long long int tmp; - - asm ("bsfq %2,%0\n" /* Count low bits in X and store in %1. */ - "cmoveq %1,%0\n" /* If number was zero, use -1 as result. */ - : "=&r" (cnt), "=r" (tmp) : "rm" (x), "1" (-1)); - - return cnt + 1; -} - -#ifndef __ILP32__ -#undef ffsl -weak_alias (ffsll, ffsl) -#endif |