From 9ef64245fa164b20db592fa866f846feb9559b14 Mon Sep 17 00:00:00 2001
From: Tillmann Karras <tilkax@gmail.com>
Date: Sun, 9 Mar 2014 19:34:58 +0100
Subject: MathUtil: fix IsQNAN()

The constants were one nibble too short and the lower 51 bits don't
actually have to be zero.
---
 Source/UnitTests/Common/MathUtilTest.cpp | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

(limited to 'Source/UnitTests/Common/MathUtilTest.cpp')

diff --git a/Source/UnitTests/Common/MathUtilTest.cpp b/Source/UnitTests/Common/MathUtilTest.cpp
index a6924f9cf7..56ade34522 100644
--- a/Source/UnitTests/Common/MathUtilTest.cpp
+++ b/Source/UnitTests/Common/MathUtilTest.cpp
@@ -2,8 +2,8 @@
 // Licensed under GPLv2
 // Refer to the license.txt file included.
 
-#include <cmath>
 #include <gtest/gtest.h>
+#include <limits>
 
 #include "Common/MathUtil.h"
 
@@ -27,19 +27,28 @@ TEST(MathUtil, Clamp)
 	EXPECT_EQ(0.0, ClampAndReturn(-1.0, 0.0, 2.0));
 }
 
+TEST(MathUtil, IsINF)
+{
+	EXPECT_TRUE(MathUtil::IsINF( std::numeric_limits<double>::infinity()));
+	EXPECT_TRUE(MathUtil::IsINF(-std::numeric_limits<double>::infinity()));
+}
+
 TEST(MathUtil, IsNAN)
 {
-	EXPECT_TRUE(MathUtil::IsNAN(nan("")));
+	EXPECT_TRUE(MathUtil::IsNAN(std::numeric_limits<double>::quiet_NaN()));
+	EXPECT_TRUE(MathUtil::IsNAN(std::numeric_limits<double>::signaling_NaN()));
 }
 
 TEST(MathUtil, IsQNAN)
 {
-	// TODO
+	EXPECT_TRUE(MathUtil::IsQNAN(std::numeric_limits<double>::quiet_NaN()));
+	EXPECT_FALSE(MathUtil::IsQNAN(std::numeric_limits<double>::signaling_NaN()));
 }
 
 TEST(MathUtil, IsSNAN)
 {
-	// TODO
+	EXPECT_FALSE(MathUtil::IsSNAN(std::numeric_limits<double>::quiet_NaN()));
+	EXPECT_TRUE(MathUtil::IsSNAN(std::numeric_limits<double>::signaling_NaN()));
 }
 
 TEST(MathUtil, Log2)
-- 
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