| 1 | /* $Id: tstRTMath.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT Testcase - base mathematics.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2017-2019 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 | #include <iprt/test.h>
|
|---|
| 28 |
|
|---|
| 29 | RT_C_DECLS_BEGIN
|
|---|
| 30 | extern uint64_t __udivmoddi4(uint64_t u64A, uint64_t u64B, uint64_t *pu64R);
|
|---|
| 31 | RT_C_DECLS_END
|
|---|
| 32 |
|
|---|
| 33 | static struct {
|
|---|
| 34 | uint64_t u64A;
|
|---|
| 35 | uint64_t u64B;
|
|---|
| 36 | uint64_t u64Div;
|
|---|
| 37 | uint64_t u64Rem;
|
|---|
| 38 | } gUDivMod[]
|
|---|
| 39 | =
|
|---|
| 40 | {
|
|---|
| 41 | { 10, 5, 2, 0 },
|
|---|
| 42 | { (uint64_t)-10, (uint64_t)-5, 0, (uint64_t)-10 },
|
|---|
| 43 | { UINT64_C(0x7FFFFFFFFFFFFFFF), 1, UINT64_C(0x7FFFFFFFFFFFFFFF), 0 },
|
|---|
| 44 | { UINT64_C(0x7FFFFFFFFFFFFFFF), UINT64_C(0x7FFFFFFFFFFFFFFF), 1, 0 },
|
|---|
| 45 | { UINT64_C(0xFFFFFFFFFFFFFFFF), 2, UINT64_C(0x7FFFFFFFFFFFFFFF), 1 },
|
|---|
| 46 | { 1, 2, 0, 1 },
|
|---|
| 47 | { UINT64_C(0xFFFFFFFFFFFFFFFE), UINT64_C(0xFFFFFFFFFFFFFFFF), 0, UINT64_C(0xFFFFFFFFFFFFFFFE) },
|
|---|
| 48 | { UINT64_C(0xEEEEEEEE12345678), UINT64_C(0x00000000EEEEEEEE), 0x100000000, 0x12345678 },
|
|---|
| 49 | };
|
|---|
| 50 |
|
|---|
| 51 | static void tstCorrectness(RTTEST hTest)
|
|---|
| 52 | {
|
|---|
| 53 | RTTestSub(hTest, "Correctness");
|
|---|
| 54 |
|
|---|
| 55 | uint64_t u64Rem;
|
|---|
| 56 | for (unsigned i = 0; i < RT_ELEMENTS(gUDivMod); i++)
|
|---|
| 57 | RTTEST_CHECK(hTest, __udivmoddi4(gUDivMod[i].u64A, gUDivMod[i].u64B, &u64Rem) == gUDivMod[i].u64Div && u64Rem == gUDivMod[i].u64Rem);
|
|---|
| 58 | }
|
|---|
| 59 |
|
|---|
| 60 | int main()
|
|---|
| 61 | {
|
|---|
| 62 | RTTEST hTest;
|
|---|
| 63 | int rc = RTTestInitAndCreate("tstRTMath", &hTest);
|
|---|
| 64 | if (rc)
|
|---|
| 65 | return rc;
|
|---|
| 66 | RTTestBanner(hTest);
|
|---|
| 67 |
|
|---|
| 68 | tstCorrectness(hTest);
|
|---|
| 69 |
|
|---|
| 70 | return RTTestSummaryAndDestroy(hTest);
|
|---|
| 71 | }
|
|---|
