diff options
Diffstat (limited to 'sysdeps/generic')
-rw-r--r-- | sysdeps/generic/ffs.c | 8 | ||||
-rw-r--r-- | sysdeps/generic/ffsll.c | 42 |
2 files changed, 49 insertions, 1 deletions
diff --git a/sysdeps/generic/ffs.c b/sysdeps/generic/ffs.c index 35cf218c4b..3f57f5cc0f 100644 --- a/sysdeps/generic/ffs.c +++ b/sysdeps/generic/ffs.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1992, 1997 Free Software Foundation, Inc. +/* Copyright (C) 1991, 1992, 1997, 1998 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Torbjorn Granlund (tege@sics.se). @@ -18,6 +18,7 @@ Boston, MA 02111-1307, USA. */ #include <limits.h> +#define ffsl __something_else #include <string.h> #undef ffs @@ -46,3 +47,8 @@ __ffs (i) return table[x >> a] + a; } weak_alias (__ffs, ffs) + +#if ULONG_MAX == UINT_MAX +#undef ffsl +weak_alias (__ffs, ffsl) +#endif diff --git a/sysdeps/generic/ffsll.c b/sysdeps/generic/ffsll.c new file mode 100644 index 0000000000..b6b836c1a3 --- /dev/null +++ b/sysdeps/generic/ffsll.c @@ -0,0 +1,42 @@ +/* Copyright (C) 1991, 1992, 1997, 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Torbjorn Granlund (tege@sics.se). + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <limits.h> +#define ffsl __something_else +#include <string.h> + +#undef ffsll + +/* Find the first bit set in I. */ +int +ffsll (i) + long long int i; +{ + unsigned long long int x = i & -i; + + if (x <= 0xffffffff) + return ffs (i); + else + return 32 + ffs (i >> 32); +} + +#if ULONG_MAX != UINT_MAX +#undef ffsl +weak_alias (ffsll, ffsl) +#endif |