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author | Alexander Smirnov <alex@ydb.tech> | 2024-10-16 12:11:24 +0000 |
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committer | Alexander Smirnov <alex@ydb.tech> | 2024-10-16 12:11:24 +0000 |
commit | 40811e93f3fdf9342a9295369994012420fac548 (patch) | |
tree | a8d85e094a9c21e10aa250f537c101fc2016a049 /contrib/libs/cxxsupp/builtins/ffsti2.c | |
parent | 30ebe5357bb143648c6be4d151ecd4944af81ada (diff) | |
parent | 28a0c4a9f297064538a018c512cd9bbd00a1a35d (diff) | |
download | ydb-40811e93f3fdf9342a9295369994012420fac548.tar.gz |
Merge branch 'rightlib' into mergelibs-241016-1210
Diffstat (limited to 'contrib/libs/cxxsupp/builtins/ffsti2.c')
-rw-r--r-- | contrib/libs/cxxsupp/builtins/ffsti2.c | 52 |
1 files changed, 23 insertions, 29 deletions
diff --git a/contrib/libs/cxxsupp/builtins/ffsti2.c b/contrib/libs/cxxsupp/builtins/ffsti2.c index dcdb3bd7f8..a2177d148a 100644 --- a/contrib/libs/cxxsupp/builtins/ffsti2.c +++ b/contrib/libs/cxxsupp/builtins/ffsti2.c @@ -1,37 +1,31 @@ -/* ===-- ffsti2.c - Implement __ffsti2 -------------------------------------=== - * - * 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 __ffsti2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ffsti2.c - Implement __ffsti2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ffsti2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* 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. - */ +// 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 -__ffsti2(ti_int a) -{ - twords x; - x.all = a; - if (x.s.low == 0) - { - if (x.s.high == 0) - return 0; - return __builtin_ctzll(x.s.high) + (1 + sizeof(di_int) * CHAR_BIT); - } - return __builtin_ctzll(x.s.low) + 1; +COMPILER_RT_ABI int __ffsti2(ti_int a) { + twords x; + x.all = a; + if (x.s.low == 0) { + if (x.s.high == 0) + return 0; + return __builtin_ctzll(x.s.high) + (1 + sizeof(di_int) * CHAR_BIT); + } + return __builtin_ctzll(x.s.low) + 1; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT |