vnl_math.h File Reference

Namespace with standard math functions. More...

Go to the source code of this file.

Compounds
class	vnl_math
Functions
template<class T> T	vnl_huge_val (T)
double	vnl_huge_val (double)
float	vnl_huge_val (float)
long int	vnl_huge_val (long int)
int	vnl_huge_val (int)
short	vnl_huge_val (short)
char	vnl_huge_val (char)
template<class T> bool	vnl_math_isnan (T)
bool	vnl_math_isnan (float)
bool	vnl_math_isnan (double)
bool	vnl_math_isnan (long double)
template<class T> bool	vnl_math_isinf (T)
bool	vnl_math_isinf (float)
bool	vnl_math_isinf (double)
bool	vnl_math_isinf (long double)
template<class T> bool	vnl_math_isfinite (T)
bool	vnl_math_isfinite (float)
bool	vnl_math_isfinite (double)
bool	vnl_math_isfinite (long double)
long	vnl_math_rnd (float x)
int	vnl_math_rnd (double x)
int	vnl_math_abs (int x)
unsigned	vnl_math_abs (unsigned x)
long	vnl_math_abs (long x)
float	vnl_math_abs (float x)
double	vnl_math_abs (double x)
int	vnl_math_max (int x, int y)
unsigned	vnl_math_max (unsigned x, unsigned y)
long	vnl_math_max (long x, long y)
float	vnl_math_max (float x, float y)
double	vnl_math_max (double x, double y)
int	vnl_math_min (int x, int y)
unsigned	vnl_math_min (unsigned x, unsigned y)
long	vnl_math_min (long x, long y)
float	vnl_math_min (float x, float y)
double	vnl_math_min (double x, double y)
int	vnl_math_sqr (int x)
unsigned	vnl_math_sqr (unsigned x)
long	vnl_math_sqr (long x)
float	vnl_math_sqr (float x)
double	vnl_math_sqr (double x)
int	vnl_math_sgn (int x)
int	vnl_math_sgn (long x)
int	vnl_math_sgn (float x)
int	vnl_math_sgn (double x)
int	vnl_math_sgn0 (int x)
int	vnl_math_sgn0 (long x)
int	vnl_math_sgn0 (float x)
int	vnl_math_sgn0 (double x)
int	vnl_math_squared_magnitude (int x)
unsigned	vnl_math_squared_magnitude (unsigned x)
long	vnl_math_squared_magnitude (long x)
float	vnl_math_squared_magnitude (float x)
double	vnl_math_squared_magnitude (double x)
float	vnl_math_sqrt (float x)
double	vnl_math_sqrt (double x)
float	vnl_math_cuberoot (float a)
double	vnl_math_cuberoot (double a)
double	vnl_math_hypot (int x, int y)
float	vnl_math_hypot (float x, float y)
double	vnl_math_hypot (double x, double y)

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Detailed Description

Namespace with standard math functions.

Author:

Andrew W. Fitzgibbon, Oxford RRG, July 13, 1996 The vnl_math namespace provides a standard set of the simple mathematical functions (min, max, sqr, sgn, rnd, abs), and some predefined constants such as pi and e, which are not defined by the ANSI C++ standard.

There are complex versions defined in vnl_complex.h

That's right, M_PI is nonstandard!

Aside from e, pi and their associates the class also defines eps, the IEEE double machine precision. This is the smallest number eps such that 1+eps != 1.

The operations are overloaded for int, float and double arguments, which in combination with inlining can make them more efficient than their counterparts in the standard C library.

Definition in file vnl_math.h.

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Function Documentation

char vnl_huge_val (  char    )

short vnl_huge_val (  short    )

int vnl_huge_val (  int    )

long int vnl_huge_val (  long    int )

float vnl_huge_val (  float    )

double vnl_huge_val (  double    )

template<class T> T vnl_huge_val (  T    )

Type-accessible infinities for use in templates.

double vnl_math_abs (  double    x )  [inline]

Definition at line 106 of file vnl_math.h.

float vnl_math_abs (  float    x )  [inline]

Definition at line 105 of file vnl_math.h.

long double vnl_math_abs (  long    x )  [inline]

Definition at line 103 of file vnl_math.h.

unsigned long vnl_math_abs (  unsigned    x )  [inline]

Definition at line 102 of file vnl_math.h.

int vnl_math_abs (  int    x )  [inline]

Definition at line 101 of file vnl_math.h.

double vnl_math_cuberoot (  double    a )  [inline]

Definition at line 157 of file vnl_math.h.

float vnl_math_cuberoot (  float    a )  [inline]

Definition at line 156 of file vnl_math.h.

double vnl_math_hypot (  double    x, double    y )  [inline]

Definition at line 162 of file vnl_math.h.

float vnl_math_hypot (  float    x, float    y )  [inline]

Definition at line 161 of file vnl_math.h.

double vnl_math_hypot (  int    x, int    y )  [inline]

Definition at line 160 of file vnl_math.h.

bool vnl_math_isfinite (  long    double )

bool vnl_math_isfinite (  double    )

bool vnl_math_isfinite (  float    )

template<class T> bool vnl_math_isfinite (  T    )  [inline]

Definition at line 91 of file vnl_math.h.

bool vnl_math_isinf (  long    double )

bool vnl_math_isinf (  double    )

bool vnl_math_isinf (  float    )

template<class T> bool vnl_math_isinf (  T    )  [inline]

Definition at line 85 of file vnl_math.h.

bool vnl_math_isnan (  long    double )

bool vnl_math_isnan (  double    )

bool vnl_math_isnan (  float    )

template<class T> bool vnl_math_isnan (  T    )  [inline]

Definition at line 79 of file vnl_math.h.

double vnl_math_max (  double    x, double    y )  [inline]

Definition at line 114 of file vnl_math.h.

float vnl_math_max (  float    x, float    y )  [inline]

Definition at line 113 of file vnl_math.h.

long vnl_math_max (  long    x, long    y )  [inline]

Definition at line 112 of file vnl_math.h.

unsigned vnl_math_max (  unsigned    x, unsigned    y )  [inline]

Definition at line 111 of file vnl_math.h.

int vnl_math_max (  int    x, int    y )  [inline]

Definition at line 110 of file vnl_math.h.

double vnl_math_min (  double    x, double    y )  [inline]

Definition at line 121 of file vnl_math.h.

float vnl_math_min (  float    x, float    y )  [inline]

Definition at line 120 of file vnl_math.h.

long vnl_math_min (  long    x, long    y )  [inline]

Definition at line 119 of file vnl_math.h.

unsigned vnl_math_min (  unsigned    x, unsigned    y )  [inline]

Definition at line 118 of file vnl_math.h.

int vnl_math_min (  int    x, int    y )  [inline]

Definition at line 117 of file vnl_math.h.

int vnl_math_rnd (  double    x )  [inline]

Definition at line 98 of file vnl_math.h.

long vnl_math_rnd (  float    x )  [inline]

Definition at line 97 of file vnl_math.h.

int vnl_math_sgn (  double    x )  [inline]

Definition at line 134 of file vnl_math.h.

int vnl_math_sgn (  float    x )  [inline]

Definition at line 133 of file vnl_math.h.

int vnl_math_sgn (  long    x )  [inline]

Definition at line 132 of file vnl_math.h.

int vnl_math_sgn (  int    x )  [inline]

Definition at line 131 of file vnl_math.h.

int vnl_math_sgn0 (  double    x )  [inline]

Definition at line 140 of file vnl_math.h.

int vnl_math_sgn0 (  float    x )  [inline]

Definition at line 139 of file vnl_math.h.

int vnl_math_sgn0 (  long    x )  [inline]

Definition at line 138 of file vnl_math.h.

int vnl_math_sgn0 (  int    x )  [inline]

Definition at line 137 of file vnl_math.h.

double vnl_math_sqr (  double    x )  [inline]

Definition at line 128 of file vnl_math.h. Referenced by itk::GaussianKernelFunction::Evaluate().

float vnl_math_sqr (  float    x )  [inline]

Definition at line 127 of file vnl_math.h.

long vnl_math_sqr (  long    x )  [inline]

Definition at line 126 of file vnl_math.h.

unsigned vnl_math_sqr (  unsigned    x )  [inline]

Definition at line 125 of file vnl_math.h.

int vnl_math_sqr (  int    x )  [inline]

Definition at line 124 of file vnl_math.h.

double vnl_math_sqrt (  double    x )  [inline]

Definition at line 153 of file vnl_math.h.

float vnl_math_sqrt (  float    x )  [inline]

Definition at line 152 of file vnl_math.h.

double vnl_math_squared_magnitude (  double    x )  [inline]

Definition at line 148 of file vnl_math.h.

float vnl_math_squared_magnitude (  float    x )  [inline]

Definition at line 147 of file vnl_math.h.

long double vnl_math_squared_magnitude (  long    x )  [inline]

Definition at line 145 of file vnl_math.h.

unsigned long vnl_math_squared_magnitude (  unsigned    x )  [inline]

Definition at line 144 of file vnl_math.h.

int vnl_math_squared_magnitude (  int    x )  [inline]

Definition at line 143 of file vnl_math.h.

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