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;
}