Initial commit

Code/CryEngine/CrySystem/UnitTests/CryMathTests.cpp

@@ -0,0 +1,38 @@
+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+
+#include "CrySystem_precompiled.h"
+#include <AzTest/AzTest.h>
+#include <Cry_Math.h>
+
+namespace UnitTest
+{
+    class CryMathTestFixture
+        : public ::testing::Test
+    {};
+
+    TEST_F(CryMathTestFixture, InverserSqrt_HasAtLeast22BitsOfAccuracy)
+    {
+        float testFloat(0.336950600);
+        const float result = isqrt_safe_tpl(testFloat * testFloat);
+        const float epsilon = 0.00001f;
+        EXPECT_NEAR(2.96779, result, epsilon);
+    }
+
+    TEST_F(CryMathTestFixture, SimdSqrt_HasAtLeast23BitsOfAccuracy)
+    {
+        float testFloat(3434.34839439);
+        const float result = sqrt_tpl(testFloat);
+        const float epsilon = 0.00001f;
+        EXPECT_NEAR(58.60331, result, epsilon);
+    }
+}