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/* $Id: tstRTMath.cpp $ */
/** @file
* IPRT Testcase - base mathematics.
*/
/*
* Copyright (C) 2017-2020 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#include <iprt/test.h>
RT_C_DECLS_BEGIN
extern uint64_t __udivmoddi4(uint64_t u64A, uint64_t u64B, uint64_t *pu64R);
RT_C_DECLS_END
static struct {
uint64_t u64A;
uint64_t u64B;
uint64_t u64Div;
uint64_t u64Rem;
} gUDivMod[]
=
{
{ 10, 5, 2, 0 },
{ (uint64_t)-10, (uint64_t)-5, 0, (uint64_t)-10 },
{ UINT64_C(0x7FFFFFFFFFFFFFFF), 1, UINT64_C(0x7FFFFFFFFFFFFFFF), 0 },
{ UINT64_C(0x7FFFFFFFFFFFFFFF), UINT64_C(0x7FFFFFFFFFFFFFFF), 1, 0 },
{ UINT64_C(0xFFFFFFFFFFFFFFFF), 2, UINT64_C(0x7FFFFFFFFFFFFFFF), 1 },
{ 1, 2, 0, 1 },
{ UINT64_C(0xFFFFFFFFFFFFFFFE), UINT64_C(0xFFFFFFFFFFFFFFFF), 0, UINT64_C(0xFFFFFFFFFFFFFFFE) },
{ UINT64_C(0xEEEEEEEE12345678), UINT64_C(0x00000000EEEEEEEE), 0x100000000, 0x12345678 },
};
static void tstCorrectness(RTTEST hTest)
{
RTTestSub(hTest, "Correctness");
uint64_t u64Rem;
for (unsigned i = 0; i < RT_ELEMENTS(gUDivMod); i++)
RTTEST_CHECK(hTest, __udivmoddi4(gUDivMod[i].u64A, gUDivMod[i].u64B, &u64Rem) == gUDivMod[i].u64Div && u64Rem == gUDivMod[i].u64Rem);
}
int main()
{
RTTEST hTest;
int rc = RTTestInitAndCreate("tstRTMath", &hTest);
if (rc)
return rc;
RTTestBanner(hTest);
tstCorrectness(hTest);
return RTTestSummaryAndDestroy(hTest);
}
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