b663c98c57
Introduce CRT_HAS_128BIT, currently for all __LP64__ platforms. Use it to enable the various functions for TI mode. This makes sure the correct primitives are also built for sparc64.
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
/* ===-- modti3.c - Implement __modti3 -------------------------------------===
|
|
*
|
|
* The LLVM Compiler Infrastructure
|
|
*
|
|
* This file is dual licensed under the MIT and the University of Illinois Open
|
|
* Source Licenses. See LICENSE.TXT for details.
|
|
*
|
|
* ===----------------------------------------------------------------------===
|
|
*
|
|
* This file implements __modti3 for the compiler_rt library.
|
|
*
|
|
* ===----------------------------------------------------------------------===
|
|
*/
|
|
|
|
#include "int_lib.h"
|
|
|
|
#ifdef CRT_HAS_128BIT
|
|
|
|
tu_int __udivmodti4(tu_int a, tu_int b, tu_int* rem);
|
|
|
|
/*Returns: a % b */
|
|
|
|
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 r;
|
|
__udivmodti4(a, b, (tu_int*)&r);
|
|
return (r ^ s) - s; /* negate if s == -1 */
|
|
}
|
|
|
|
#endif /* CRT_HAS_128BIT */
|