diff options
Diffstat (limited to 'compiler-rt/lib/builtins/ashrti3.c')
| -rw-r--r-- | compiler-rt/lib/builtins/ashrti3.c | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/compiler-rt/lib/builtins/ashrti3.c b/compiler-rt/lib/builtins/ashrti3.c index 98ffefb0134..f573b6d6ccb 100644 --- a/compiler-rt/lib/builtins/ashrti3.c +++ b/compiler-rt/lib/builtins/ashrti3.c @@ -1,36 +1,33 @@ -/* ===-- ashrti3.c - Implement __ashrti3 -----------------------------------=== - * - * 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 __ashrti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ashrti3.c - Implement __ashrti3 -----------------------------------===// +// +// 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 __ashrti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: arithmetic a >> b */ +// Returns: arithmetic a >> b -/* Precondition: 0 <= b < bits_in_tword */ +// Precondition: 0 <= b < bits_in_tword COMPILER_RT_ABI ti_int __ashrti3(ti_int a, si_int b) { const int bits_in_dword = (int)(sizeof(di_int) * CHAR_BIT); twords input; twords result; input.all = a; - if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ - { - /* result.s.high = input.s.high < 0 ? -1 : 0 */ + if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ { + // result.s.high = input.s.high < 0 ? -1 : 0 result.s.high = input.s.high >> (bits_in_dword - 1); result.s.low = input.s.high >> (b - bits_in_dword); - } else /* 0 <= b < bits_in_dword */ - { + } else /* 0 <= b < bits_in_dword */ { if (b == 0) return a; result.s.high = input.s.high >> b; @@ -39,4 +36,4 @@ COMPILER_RT_ABI ti_int __ashrti3(ti_int a, si_int b) { return result.all; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT |
