summaryrefslogtreecommitdiff
path: root/lib/libcompiler_rt/cmpti2.c
blob: 2c8b56e29a067f82775ee32de6848cb1e93fc37b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
/* ===-- cmpti2.c - Implement __cmpti2 -------------------------------------===
 *
 *                     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 __cmpti2 for the compiler_rt library.
 *
 * ===----------------------------------------------------------------------===
 */

#include "int_lib.h"

#ifdef CRT_HAS_128BIT

/* Returns:  if (a <  b) returns 0
 *           if (a == b) returns 1
 *           if (a >  b) returns 2
 */

COMPILER_RT_ABI si_int
__cmpti2(ti_int a, ti_int b)
{
    twords x;
    x.all = a;
    twords 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;
}

#endif /* CRT_HAS_128BIT */