cosmopolitan/third_party/compiler_rt/ucmpdi2.c

55 lines
1.2 KiB
C

/* clang-format off */
/* ===-- ucmpdi2.c - Implement __ucmpdi2 -----------------------------------===
*
* 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 __ucmpdi2 for the compiler_rt library.
*
* ===----------------------------------------------------------------------===
*/
STATIC_YOINK("huge_compiler_rt_license");
#include "third_party/compiler_rt/int_lib.h"
/* Returns: if (a < b) returns 0
* if (a == b) returns 1
* if (a > b) returns 2
*/
COMPILER_RT_ABI si_int
__ucmpdi2(du_int a, du_int b)
{
udwords x;
x.all = a;
udwords y;
y.all = b;
if (x.s.high < y.s.high)
return 0;
if (x.s.high > y.s.high)
return 2;
if (x.s.low < y.s.low)
return 0;
if (x.s.low > y.s.low)
return 2;
return 1;
}
#ifdef __ARM_EABI__
/* Returns: if (a < b) returns -1
* if (a == b) returns 0
* if (a > b) returns 1
*/
COMPILER_RT_ABI si_int
__aeabi_ulcmp(di_int a, di_int b)
{
return __ucmpdi2(a, b) - 1;
}
#endif