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#ifndef M_PI
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#define M_PI 3.14159265358979323846
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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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#define CGLA_INIT_VALUE NAN
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namespace CGLA
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namespace CGLA
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{
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{
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  /** Procedural definition of NAN */
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  const float CGLA_NAN = log(-1.0f);
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  /** NAN is used for initialization of vectors and matrices
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      in debug mode */
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  const float 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 extremely small.
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  /** Numerical constant represents something extremely small.