diff options
Diffstat (limited to 'lib/moddi3.c')
-rw-r--r-- | lib/moddi3.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/lib/moddi3.c b/lib/moddi3.c index 5e903914a..453355596 100644 --- a/lib/moddi3.c +++ b/lib/moddi3.c @@ -1,31 +1,32 @@ -//===-- moddi3.c - Implement __moddi3 -------------------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements __moddi3 for the compiler_rt library. -// -//===----------------------------------------------------------------------===// +/*===-- moddi3.c - Implement __moddi3 -------------------------------------=== + * + * The LLVM Compiler Infrastructure + * + * This file is distributed under the University of Illinois Open Source + * License. See LICENSE.TXT for details. + * + * ===----------------------------------------------------------------------=== + * + * This file implements __moddi3 for the compiler_rt library. + * + * ===----------------------------------------------------------------------=== + */ #include "int_lib.h" du_int __udivmoddi4(du_int a, du_int b, du_int* rem); -// Returns: a % b +/* Returns: a % b */ di_int __moddi3(di_int a, di_int b) { const int bits_in_dword_m1 = (int)(sizeof(di_int) * CHAR_BIT) - 1; - di_int s = b >> bits_in_dword_m1; // s = b < 0 ? -1 : 0 - b = (b ^ s) - s; // negate if s == -1 - s = a >> bits_in_dword_m1; // s = a < 0 ? -1 : 0 - a = (a ^ s) - s; // negate if s == -1 + di_int s = b >> bits_in_dword_m1; /* s = b < 0 ? -1 : 0 */ + b = (b ^ s) - s; /* negate if s == -1 */ + s = a >> bits_in_dword_m1; /* s = a < 0 ? -1 : 0 */ + a = (a ^ s) - s; /* negate if s == -1 */ di_int r; __udivmoddi4(a, b, (du_int*)&r); - return (r ^ s) - s; // negate if s == -1 + return (r ^ s) - s; /* negate if s == -1 */ } |