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- /*===-- moddi3.c - Implement __moddi3 -------------------------------------===
- *
- * 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 __moddi3 for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
- */
- #include "int_lib.h"
- /* Returns: a % b */
- COMPILER_RT_ABI 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 */
- du_int r;
- __udivmoddi4(a, b, &r);
- return ((di_int)r ^ s) - s; /* negate if s == -1 */
- }
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