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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /string/ffsll.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
downloadglibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.gz
2.5-18.1
Diffstat (limited to 'string/ffsll.c')
-rw-r--r--string/ffsll.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/string/ffsll.c b/string/ffsll.c
new file mode 100644
index 0000000000..9dd269afb7
--- /dev/null
+++ b/string/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 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, 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