Changeset View
Changeset View
Standalone View
Standalone View
head/contrib/compiler-rt/lib/builtins/ffssi2.c
| Property | Old Value | New Value |
|---|---|---|
| svn:eol-style | null | native \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| /* ===-- ffssi2.c - Implement __ffssi2 -------------------------------------=== | |||||
| * | |||||
| * The LLVM Compiler Infrastructure | |||||
| * | |||||
| * This file is dual licensed under the MIT and the University of Illinois Open | |||||
| * Source Licenses. See LICENSE.TXT for details. | |||||
| * | |||||
| * ===----------------------------------------------------------------------=== | |||||
| * | |||||
| * This file implements __ffssi2 for the compiler_rt library. | |||||
| * | |||||
| * ===----------------------------------------------------------------------=== | |||||
| */ | |||||
| #include "int_lib.h" | |||||
| /* Returns: the index of the least significant 1-bit in a, or | |||||
| * the value zero if a is zero. The least significant bit is index one. | |||||
| */ | |||||
| COMPILER_RT_ABI si_int | |||||
| __ffssi2(si_int a) | |||||
| { | |||||
| if (a == 0) | |||||
| { | |||||
| return 0; | |||||
| } | |||||
| return __builtin_ctz(a) + 1; | |||||
| } | |||||