vc6compat.h

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#ifndef VC6COMPAT_H
#define VC6COMPAT_H

#ifdef _MSC_VER //note: should probably check for newer versions
                 // without the annoying Visual C++ bugs
namespace NaN {
  // define function for generating
  // floating point NaNs
  inline float nanf(const char *dummy) {
    static char *nan="\x00\x00\xc0\x7f";
    // what nanf("") returns
    return *(reinterpret_cast<float *>(nan));
  }
}

using NaN::nanf;
#define M_PI 3.14159265358979323846264338327950288419716939937508

#if (_MSC_VER<=1200)
#include <cmath>
#ifndef for
#define for if(0);else for
#endif

namespace std {
  #include <cstdlib>
};


inline double abs(double x) {
  return fabs(x);
}  
// abs should be overloaded for double

#endif //_MSC_VER <=1200
#endif // microsoft compiler

#endif 

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