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#define M_PI_2 1.57079632679489661923
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#define M_PI_2 1.57079632679489661923
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#endif
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#endif
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namespace CGLA
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namespace CGLA
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{
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{
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		inline float cgla_nan()
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		{
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				static const float cgla_nan_value = log(1.0f);
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				return cgla_nan_value;
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		}
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  /** Procedural definition of NAN */
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  /** Procedural definition of NAN */
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  const float CGLA_NAN = log(-1.0f);
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#define CGLA_NAN cgla_nan()
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  /** NAN is used for initialization of vectors and matrices
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  /** NAN is used for initialization of vectors and matrices
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      in debug mode */
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      in debug mode */
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  const float CGLA_INIT_VALUE = CGLA_NAN;
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#define CGLA_INIT_VALUE cgla_nan()
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  /** Numerical constant representing something large.
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  /** Numerical constant representing something large.
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      value is a bit arbitrary */
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      value is a bit arbitrary */
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  const double BIG=10e+30;
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  const double BIG=10e+30;
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  /** Numerical constant represents something small.
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  /** Numerical constant represents something small.
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      value is a bit arbitrary */
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      value is a bit arbitrary */
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  const double SMALL=10e-2;
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  const double SMALL=10e-2;
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		inline double sqrt3()
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		{
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  const double SQRT3=sqrt(3.0);
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				static const double sqrt3_val = sqrt(3.0);
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				return sqrt3_val;
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		}
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#define SQRT3 sqrt3()
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  /// Useful enum that represents coordiante axes.
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  /// Useful enum that represents coordiante axes.
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  enum Axis {XAXIS=0,YAXIS=1,ZAXIS=2};
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  enum Axis {XAXIS=0,YAXIS=1,ZAXIS=2};
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#ifdef WIN32
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#ifdef WIN32