text: ///////////////////////////////////////////////////////////////////////
  // File:        mathfix.h
  // Description: Implement missing math functions
  // Author:      zdenop
  // Created:     Fri Feb 03 06:45:06 CET 2012
  //
  // (C) Copyright 2012, Google Inc.
  // 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.
  //
  ///////////////////////////////////////////////////////////////////////
  
  #ifndef VS2008_INCLUDE_MATHFIX_H_
  #define VS2008_INCLUDE_MATHFIXT_H_
  
  #ifndef _MSC_VER
  #error "Use this header only with Microsoft Visual C++ compilers!"
  #endif
  
  #include <math.h>
  #include <float.h>  // for _isnan(), _finite() on VC++
  #define isnan(x) _isnan(x)
  #define isinf(x) (!_finite(x))
  #define fmax max //VC++ does not implement all the provisions of C99 Standard
  #define round(x) roundf(x)
  inline float roundf(float num) { return num > 0 ? floorf(num + 0.5f) : ceilf(num - 0.5f); }
  
  #endif  // VS2008_INCLUDE_MATHFIXT_H_
  