unitests: add mathlib test

unittests/mathlibtest/mathlib_performance_test.cpp

@@ -0,0 +1,41 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Unit test program for CommandBuffer
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "unitlib/unitlib.h"
+#include "tier1/CommandBuffer.h"
+#include "tier1/strtools.h"
+#include "tier0/platform.h"
+#include "tier0/fasttimer.h"
+
+
+DEFINE_TESTSUITE( MathlibTestSuite )
+
+DEFINE_TESTCASE( MathlibTestSSE, MathlibTestSuite )
+{
+	CFastTimer timer;
+	timer.Start();
+
+	float sum = 0.f;
+
+	for( float a = 0.f; a <= M_PI; a += 0.000001f )
+		sum += sinf(a);
+
+	timer.End();
+
+	Msg("cos Cycles: %llu\n", timer.GetDuration().GetLongCycles());
+	Msg("cos sum - %f\n", sum);
+
+	timer.Start();
+
+	for( float a = 0.f; a <= M_PI; a += 0.000001f )
+		sum += FastCos(a);
+
+	timer.End();
+
+	Msg("ssecos Cycles: %llu\n", timer.GetDuration().GetLongCycles());
+	Msg("ssecos sum - %f\n", sum);
+}