1 /* ===-- modti3.c - Implement __modti3 -------------------------------------===
3 * The LLVM Compiler Infrastructure
5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. See LICENSE.TXT for details.
8 * ===----------------------------------------------------------------------===
10 * This file implements __modti3 for the compiler_rt library.
12 * ===----------------------------------------------------------------------===
21 COMPILER_RT_ABI ti_int
22 __modti3(ti_int a
, ti_int b
)
24 const int bits_in_tword_m1
= (int)(sizeof(ti_int
) * CHAR_BIT
) - 1;
25 ti_int s
= b
>> bits_in_tword_m1
; /* s = b < 0 ? -1 : 0 */
26 b
= (b
^ s
) - s
; /* negate if s == -1 */
27 s
= a
>> bits_in_tword_m1
; /* s = a < 0 ? -1 : 0 */
28 a
= (a
^ s
) - s
; /* negate if s == -1 */
30 __udivmodti4(a
, b
, &r
);
31 return ((ti_int
)r
^ s
) - s
; /* negate if s == -1 */
34 #endif /* CRT_HAS_128BIT */