cmpti2.c revision 360660 
1//===-- cmpti2.c - Implement __cmpti2 -------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements __cmpti2 for the compiler_rt library.
10//
11//===----------------------------------------------------------------------===//
12
13#include "int_lib.h"
14
15#ifdef CRT_HAS_128BIT
16
17// Returns:  if (a <  b) returns 0
18//           if (a == b) returns 1
19//           if (a >  b) returns 2
20
21COMPILER_RT_ABI si_int __cmpti2(ti_int a, ti_int b) {
22  twords x;
23  x.all = a;
24  twords y;
25  y.all = b;
26  if (x.s.high < y.s.high)
27    return 0;
28  if (x.s.high > y.s.high)
29    return 2;
30  if (x.s.low < y.s.low)
31    return 0;
32  if (x.s.low > y.s.low)
33    return 2;
34  return 1;
35}
36
37#endif // CRT_HAS_128BIT
38