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Diffstat (limited to 'Source/Utility/ieee.h')
-rw-r--r--Source/Utility/ieee.h29
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diff --git a/Source/Utility/ieee.h b/Source/Utility/ieee.h
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+//-----------------------------------------------------------------------------
+// Name: ieee.h
+// Developer: Wolfire Games LLC
+// Description:
+// License: Read below
+//-----------------------------------------------------------------------------
+//
+// Copyright 2022 Wolfire Games LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//-----------------------------------------------------------------------------
+
+//This functions only returns expected results if the program isn't compiled with --fast-math in gcc as it removes strict IEEE standard compliance.
+inline bool IsNan( const float& val )
+{
+ //The IEEE 745 standard states that this only evaluates to true if val is NaN.
+ return val != val;
+}