| // RUN: %clang_builtins %s %librt -o %t && %run %t |
| // REQUIRES: librt_has_divmodti4 |
| // REQUIRES: int128 |
| //===-- divmodti4_test.c - Test __divmodti4 -------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file tests __divmodti4 for the compiler_rt library. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "int_lib.h" |
| #include <stdio.h> |
| |
| #ifdef CRT_HAS_128BIT |
| |
| // Effects: if rem != 0, *rem = a % b |
| // Returns: a / b |
| |
| COMPILER_RT_ABI ti_int __divmodti4(ti_int a, ti_int b, ti_int* rem); |
| |
| int test__divmodti4(ti_int a, ti_int b, ti_int expected_q, ti_int expected_r) { |
| ti_int r; |
| ti_int q = __divmodti4(a, b, &r); |
| if (q != expected_q || r != expected_r) |
| { |
| utwords at; |
| at.all = a; |
| utwords bt; |
| bt.all = b; |
| utwords expected_qt; |
| expected_qt.all = expected_q; |
| utwords expected_rt; |
| expected_rt.all = expected_r; |
| utwords qt; |
| qt.all = q; |
| utwords rt; |
| rt.all = r; |
| printf("error in __divmodti4: 0x%.16llX%.16llX / 0x%.16llX%.16llX = " |
| "0x%.16llX%.16llX, R = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX, " |
| "0x%.16llX%.16llX\n", |
| at.s.high, at.s.low, bt.s.high, bt.s.low, qt.s.high, qt.s.low, |
| rt.s.high, rt.s.low, expected_qt.s.high, expected_qt.s.low, |
| expected_rt.s.high, expected_rt.s.low); |
| } |
| return !(q == expected_q && r == expected_r); |
| } |
| |
| char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0}; |
| |
| tu_int tests[][4] = |
| { |
| { (ti_int) 0, (ti_int) 1, (ti_int) 0, (ti_int) 0 }, |
| { (ti_int) 0, (ti_int)-1, (ti_int) 0, (ti_int) 0 }, |
| { (ti_int) 2, (ti_int) 1, (ti_int) 2, (ti_int) 0 }, |
| { (ti_int) 2, (ti_int)-1, (ti_int)-2, (ti_int) 0 }, |
| { (ti_int)-2, (ti_int) 1, (ti_int)-2, (ti_int) 0 }, |
| { (ti_int)-2, (ti_int)-1, (ti_int) 2, (ti_int) 0 }, |
| { (ti_int) 5, (ti_int) 3, (ti_int) 1, (ti_int) 2 }, |
| { (ti_int) 5, (ti_int)-3, (ti_int)-1, (ti_int) 2 }, |
| { (ti_int)-5, (ti_int) 3, (ti_int)-1, (ti_int)-2 }, |
| { (ti_int)-5, (ti_int)-3, (ti_int) 1, (ti_int)-2 }, |
| { (ti_int)0x8000000000000000LL << 64 | 0, (ti_int) 1, (ti_int)0x8000000000000000LL << 64 | 0, (ti_int)0x0LL }, |
| { (ti_int)0x8000000000000000LL << 64 | 0, (ti_int)-1, (ti_int)0x8000000000000000LL << 64 | 0, (ti_int)0x0LL }, |
| { (ti_int)0x8000000000000000LL << 64 | 0, (ti_int)-2, (ti_int)0x4000000000000000LL << 64 | 0, (ti_int)0x0LL }, |
| { (ti_int)0x8000000000000000LL << 64 | 0, (ti_int) 2, (ti_int)0xC000000000000000LL << 64 | 0, (ti_int)0x0LL }, |
| { (ti_int)0x8000000000000000LL << 64 | 0, (ti_int)-3, (ti_int)0x2AAAAAAAAAAAAAAALL << 64 | 0xAAAAAAAAAAAAAAAALL, (ti_int)-2 }, |
| { (ti_int)0x8000000000000000LL << 64 | 0, (ti_int) 3, (ti_int)0xD555555555555555LL << 64 | 0x5555555555555556LL, (ti_int)-2 }, |
| }; |
| |
| #endif |
| |
| int main() |
| { |
| #ifdef CRT_HAS_128BIT |
| const unsigned N = sizeof(tests) / sizeof(tests[0]); |
| unsigned i; |
| for (i = 0; i < N; ++i) |
| if (test__divmodti4(tests[i][0], tests[i][1], tests[i][2], tests[i][3])) |
| return 1; |
| |
| |
| #else |
| printf("skipped\n"); |
| #endif |
| return 0; |
| } |
