Fix For Issue #10 - TEST_ASSERT_EQUAL_FLOAT doesn't fail if actual value is a NaN.

src/unity.c

@@ -578,7 +578,8 @@ void UnityAssertFloatsWithin(const _UF delta,
         pos_delta = 0.0f - pos_delta;
     }
 
-    if (pos_delta < diff)
+    // NOTE: This comparrison is deliberately this way round so that NaNs fail.
+    if ( ! (pos_delta >= diff) )
     {
         UnityTestResultsFailBegin(lineNumber);
 #ifdef UNITY_FLOAT_VERBOSE

test/testunity.c

@@ -2226,6 +2226,17 @@ void testFloatsNotEqualNegative2(void)
 #endif
 }
 
+void testFloatsNotEqualActualNaN(void)
+{
+#ifdef UNITY_EXCLUDE_FLOAT
+    TEST_IGNORE();
+#else
+    EXPECT_ABORT_BEGIN
+    TEST_ASSERT_EQUAL_FLOAT(85.963f, 0.0f / 0.0f);
+    VERIFY_FAILS_END
+#endif
+}
+
 void testEqualFloatArrays(void)
 {
 #ifdef UNITY_EXCLUDE_FLOAT