| /* | 
 |  *  Copyright 2005 The WebRTC Project Authors. All rights reserved. | 
 |  * | 
 |  *  Use of this source code is governed by a BSD-style license | 
 |  *  that can be found in the LICENSE file in the root of the source | 
 |  *  tree. An additional intellectual property rights grant can be found | 
 |  *  in the file PATENTS.  All contributing project authors may | 
 |  *  be found in the AUTHORS file in the root of the source tree. | 
 |  */ | 
 |  | 
 | #ifndef WEBRTC_BASE_MATHUTILS_H_ | 
 | #define WEBRTC_BASE_MATHUTILS_H_ | 
 |  | 
 | #include <math.h> | 
 |  | 
 | #ifndef M_PI | 
 | #define M_PI 3.14159265359f | 
 | #endif | 
 |  | 
 | #endif  // WEBRTC_BASE_MATHUTILS_H_ |