| 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 | |
| 21 | COMPILER_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 | |