diff options
Diffstat (limited to 'lib/ashrdi3.c')
| -rw-r--r-- | lib/ashrdi3.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/lib/ashrdi3.c b/lib/ashrdi3.c index fc2e6d843..a8125a3c7 100644 --- a/lib/ashrdi3.c +++ b/lib/ashrdi3.c @@ -1,21 +1,22 @@ -//===-- ashrdi3.c - Implement __ashrdi3 -----------------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements __ashrdi3 for the compiler_rt library. -// -//===----------------------------------------------------------------------===// +/*===-- ashrdi3.c - Implement __ashrdi3 -----------------------------------=== + * + * The LLVM Compiler Infrastructure + * + * This file is distributed under the University of Illinois Open Source + * License. See LICENSE.TXT for details. + * + * ===----------------------------------------------------------------------=== + * + * This file implements __ashrdi3 for the compiler_rt library. + * + * ===----------------------------------------------------------------------=== + */ #include "int_lib.h" -// Returns: arithmetic a >> b +/* Returns: arithmetic a >> b */ -// Precondition: 0 <= b < bits_in_dword +/* Precondition: 0 <= b < bits_in_dword */ di_int __ashrdi3(di_int a, si_int b) @@ -24,13 +25,13 @@ __ashrdi3(di_int a, si_int b) dwords input; dwords result; input.all = a; - if (b & bits_in_word) // bits_in_word <= b < bits_in_dword + if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ { - // result.high = input.high < 0 ? -1 : 0 + /* result.high = input.high < 0 ? -1 : 0 */ result.high = input.high >> (bits_in_word - 1); result.low = input.high >> (b - bits_in_word); } - else // 0 <= b < bits_in_word + else /* 0 <= b < bits_in_word */ { if (b == 0) return a; |