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Mathematical Constants

M_PI, M_SQRT2

#include <vigra/mathutil.hxx>

Since M_PI and M_SQRT2 are not officially standardized, we provide definitions here for those compilers that don't support them.

#ifndef M_PI
# define M_PI 3.14159265358979323846
#endif
#ifndef M_SQRT2
# define M_SQRT2 1.41421356237309504880
#endif

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de)
Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany

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vigra 1.7.1 (Thu Jun 14 2012)