diff options
Diffstat (limited to 'compiler-rt/lib/ashrti3.c')
| -rw-r--r-- | compiler-rt/lib/ashrti3.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/compiler-rt/lib/ashrti3.c b/compiler-rt/lib/ashrti3.c index bfdd2eb99f6..55645f78da4 100644 --- a/compiler-rt/lib/ashrti3.c +++ b/compiler-rt/lib/ashrti3.c @@ -1,23 +1,24 @@ -//===-- ashrti3.c - Implement __ashrti3 -----------------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements __ashrti3 for the compiler_rt library. -// -//===----------------------------------------------------------------------===// +/* ===-- ashrti3.c - Implement __ashrti3 -----------------------------------=== + * + * The LLVM Compiler Infrastructure + * + * This file is distributed under the University of Illinois Open Source + * License. See LICENSE.TXT for details. + * + * ===----------------------------------------------------------------------=== + * + * This file implements __ashrti3 for the compiler_rt library. + * + * ===----------------------------------------------------------------------=== + */ #if __x86_64 #include "int_lib.h" -// Returns: arithmetic a >> b +/* Returns: arithmetic a >> b */ -// Precondition: 0 <= b < bits_in_tword +/* Precondition: 0 <= b < bits_in_tword */ ti_int __ashrti3(ti_int a, si_int b) @@ -26,13 +27,13 @@ __ashrti3(ti_int a, si_int b) twords input; twords result; input.all = a; - if (b & bits_in_dword) // bits_in_dword <= b < bits_in_tword + if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ { - // result.high = input.high < 0 ? -1 : 0 + /* result.high = input.high < 0 ? -1 : 0 */ result.high = input.high >> (bits_in_dword - 1); result.low = input.high >> (b - bits_in_dword); } - else // 0 <= b < bits_in_dword + else /* 0 <= b < bits_in_dword */ { if (b == 0) return a; |
