diff options
Diffstat (limited to 'compiler-rt/lib/builtins/modti3.c')
| -rw-r--r-- | compiler-rt/lib/builtins/modti3.c | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/compiler-rt/lib/builtins/modti3.c b/compiler-rt/lib/builtins/modti3.c index 02bd62a8042..d11fe220b76 100644 --- a/compiler-rt/lib/builtins/modti3.c +++ b/compiler-rt/lib/builtins/modti3.c @@ -1,31 +1,30 @@ -/* ===-- modti3.c - Implement __modti3 -------------------------------------=== - * - * 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 __modti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- modti3.c - Implement __modti3 -------------------------------------===// +// +// 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 __modti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/*Returns: a % b */ +// Returns: a % b COMPILER_RT_ABI ti_int __modti3(ti_int a, ti_int b) { const int bits_in_tword_m1 = (int)(sizeof(ti_int) * CHAR_BIT) - 1; - ti_int s = b >> bits_in_tword_m1; /* s = b < 0 ? -1 : 0 */ - b = (b ^ s) - s; /* negate if s == -1 */ - s = a >> bits_in_tword_m1; /* s = a < 0 ? -1 : 0 */ - a = (a ^ s) - s; /* negate if s == -1 */ + ti_int s = b >> bits_in_tword_m1; // s = b < 0 ? -1 : 0 + b = (b ^ s) - s; // negate if s == -1 + s = a >> bits_in_tword_m1; // s = a < 0 ? -1 : 0 + a = (a ^ s) - s; // negate if s == -1 tu_int r; __udivmodti4(a, b, &r); - return ((ti_int)r ^ s) - s; /* negate if s == -1 */ + return ((ti_int)r ^ s) - s; // negate if s == -1 } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT |
