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-rw-r--r--src/VBox/Runtime/testcase/tstRTMath.cpp71
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
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+++ b/src/VBox/Runtime/testcase/tstRTMath.cpp
@@ -0,0 +1,71 @@
+/* $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);
+}