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Diffstat (limited to '')
| -rw-r--r-- | src/VBox/Runtime/testcase/tstRTMath.cpp | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/VBox/Runtime/testcase/tstRTMath.cpp b/src/VBox/Runtime/testcase/tstRTMath.cpp new file mode 100644 index 00000000..096d0f00 --- /dev/null +++ b/src/VBox/Runtime/testcase/tstRTMath.cpp @@ -0,0 +1,71 @@ +/* $Id: tstRTMath.cpp $ */ +/** @file + * IPRT Testcase - base mathematics. + */ + +/* + * Copyright (C) 2017-2019 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); +} |