itkMath.h File Reference

Go to the source code of this file.

Namespaces
namespace	itk
namespace	itk::Math

Macros
#define	itkTemplateFloatingToIntegerMacro(name)

Functions
template<typename TReturn , typename TInput >
TReturn	itk::Math::CastWithRangeCheck (TInput x)
template<TReturn , typename TInput >
	itk::Math::Ceil (TInput x)
template<typename T >
bool	itk::Math::FloatAlmostEqual (T x1, T x2, typename Detail::FloatIEEE< T >::IntType maxUlps=4, typename Detail::FloatIEEE< T >::FloatType maxAbsoluteDifference=0.1 *NumericTraits< T >::epsilon())
template<typename T >
Detail::FloatIEEE< T >::IntType	itk::Math::FloatDifferenceULP (T x1, T x2)
template<TReturn , typename TInput >
	itk::Math::Floor (TInput x)
template<typename TReturn , typename TInput >
TReturn	itk::Math::Round (TInput x)
template<TReturn , typename TInput >
	itk::Math::RoundHalfIntegerToEven (TInput x)
template<TReturn , typename TInput >
	itk::Math::RoundHalfIntegerUp (TInput x)

Variables
static const double	itk::Math::e = 2.7182818284590452354
static const double	itk::Math::ln10 = 2.30258509299404568402
static const double	itk::Math::ln2 = 0.69314718055994530942
static const double	itk::Math::log10e = 0.43429448190325182765
static const double	itk::Math::log2e = 1.4426950408889634074
static const double	itk::Math::one_over_pi = 0.31830988618379067154
static const double	itk::Math::one_over_sqrt2pi = 0.39894228040143267794
static const double	itk::Math::pi = 3.14159265358979323846
static const double	itk::Math::pi_over_2 = 1.57079632679489661923
static const double	itk::Math::pi_over_4 = 0.78539816339744830962
static const double	itk::Math::sqrt1_2 = 0.70710678118654752440
static const double	itk::Math::sqrt2 = 1.41421356237309504880
static const double	itk::Math::two_over_pi = 0.63661977236758134308
static const double	itk::Math::two_over_sqrtpi = 1.12837916709551257390

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Macro Definition Documentation

#define itkTemplateFloatingToIntegerMacro

(

name

)

Value:

template< typename TReturn, typename TInput >                                     \
  inline TReturn name(TInput x)                                                     \
    {                                                                               \
                                                                                    \
    if ( sizeof( TReturn ) <= 4 )                                                   \
      {                                                                             \
      return static_cast< TReturn >( Detail::name##_32(x) );                      \
      }                                                                             \
    else if ( sizeof( TReturn ) <= 8 )                                              \
      {                                                                             \
      return static_cast< TReturn >( Detail::name##_64(x) );                      \
      }                                                                             \
    else                                                                            \
      {                                                                             \
      return static_cast< TReturn >( Detail::name##_base< TReturn, TInput >(x) ); \
      }                                                                             \
    }

A useful macro to generate a template floating point to integer conversion templated on the return type and using either the 32 bit, the 64 bit or the vanilla version

Definition at line 76 of file itkMath.h.