Utility.h File Reference

Contains various mathematical constants, mathematical and utility functions. More...

#include "../Mat.h"
#include "FunctionTable.h"
#include <cmath>

Go to the source code of this file.

Namespaces
namespace	exmat
namespace	exmat::Math
Numerical constants
static double	exmat::Math::CPi ()
	Pi is the ratio of the circumference of a circle to its diameter.
static double	exmat::Math::C2Pi ()
	2 * Pi
static double	exmat::Math::CPi_2 ()
	Pi / 2.
static double	exmat::Math::CPi_4 ()
	Pi / 4.
static double	exmat::Math::C1_Pi ()
	1 / Pi
static double	exmat::Math::C2_Pi ()
	2 / Pi
static double	exmat::Math::CE ()
	E is the base of the natural logarithms.
static double	exmat::Math::CSqrt2 ()
	sqrt(2)
static double	exmat::Math::C1_Sqrt2 ()
	1 / sqrt(2)
Utility functions
static int	exmat::Math::abs (int x)
	Absolute value of x.
static float	exmat::Math::abs (float x)
	Absolute value of x.
static double	exmat::Math::abs (double x)
	Absolute value of x.
static bool	exmat::Math::isEqual (double s1, double s2, double eps=1e-6)
	isEqual test for 2 numbers are equal or not within a torrence
static float	exmat::Math::sqrt (float x)
	Square root value.
static double	exmat::Math::sqrt (double x)
	Square root value.
static void	exmat::Math::sqrt (const float *in, float *out, size_t N)
	Square root value.
static float	exmat::Math::rsqrt (float x)
	1/sqrt(x)
static double	exmat::Math::rsqrt (double x)
	1/sqrt(x)
static void	exmat::Math::rsqrt (const float *in, float *out, size_t N)
	1/sqrt(x)
static float	exmat::Math::exp (float x)
	Exponential value of base e.
static double	exmat::Math::exp (double x)
	Exponential value of base e.
static void	exmat::Math::exp (const float *in, float *out, size_t N)
	Exponential value of base e.
static float	exmat::Math::log (float x)
	Logarithms value of x (base e).
static double	exmat::Math::log (double x)
	Logarithms value of x (base e).
static void	exmat::Math::log (const float *in, float *out, size_t N)
	Logarithms value of x (base e).
static float	exmat::Math::pow (float x, float y)
	Calculate x raises to the power y.
static double	exmat::Math::pow (double x, double y)
	Calculate x raises to the power y.
Trigonometrical functions
static float	exmat::Math::sin (float x)
	Sine value of x (in radian).
static double	exmat::Math::sin (double x)
	Sine value of x (in radian).
static void	exmat::Math::sin (const float *in, float *out, size_t N)
	Sine value of x (in radian).
static float	exmat::Math::cos (float x)
	Cosine value of x (in radian).
static double	exmat::Math::cos (double x)
	Sine value of x (in radian).
static void	exmat::Math::cos (const float *in, float *out, size_t N)
	Sine value of x (in radian).
static void	exmat::Math::sincos (float x, float &s, float &c)
	Sine and cosine value of x (in radian).
static void	exmat::Math::sincos (double x, double &s, double &c)
	Sine and cosine value of x (in radian).
static float	exmat::Math::tan (float x)
	Tangent value of x (in radian).
static double	exmat::Math::tan (double x)
	Sine value of x (in radian).
static void	exmat::Math::tan (const float *in, float *out, size_t N)
	Sine value of x (in radian).
static float	exmat::Math::asin (float x)
	Arc sine value (in radian) of x.
static double	exmat::Math::asin (double x)
	Sine value of x (in radian).
static void	exmat::Math::asin (const float *in, float *out, size_t N)
	Sine value of x (in radian).
static float	exmat::Math::acos (float x)
	Arc cosine value (in radian) of x.
static double	exmat::Math::acos (double x)
	Sine value of x (in radian).
static void	exmat::Math::acos (const float *in, float *out, size_t N)
	Sine value of x (in radian).
static float	exmat::Math::atan (float x)
	Arc tangent value (in radian) of x.
static double	exmat::Math::atan (double x)
	Sine value of x (in radian).
static void	exmat::Math::atan (const float *in, float *out, size_t N)
	Sine value of x (in radian).
Functions
template<typename T>
static T	exmat::Math::min (const T &x1, const T &x2)
	Minimum of 2 value.
template<typename T>
static T	exmat::Math::min (const T &x1, const T &x2, const T &x3)
	Minimum of 3 value.
template<typename T>
static T	exmat::Math::min (const T &x1, const T &x2, const T &x3, const T &x4)
	Minimum of 4 value.
template<typename T>
static T	exmat::Math::min (const T &x1, const T &x2, const T &x3, const T &x4, const T &x5)
	Minimum of 5 value.
static float	exmat::Math::min (const float *in, size_t N)
	Minimum value.
template<typename T>
static T	exmat::Math::max (const T &x1, const T &x2)
	Maximum of 2 value.
template<typename T>
static T	exmat::Math::max (const T &x1, const T &x2, const T &x3)
	Maximum of 3 value.
template<typename T>
static T	exmat::Math::max (const T &x1, const T &x2, const T &x3, const T &x4)
	Maximum of 4 value.
template<typename T>
static T	exmat::Math::max (const T &x1, const T &x2, const T &x3, const T &x4, const T &x5)
	Maximum of 5 value.
static float	exmat::Math::max (const float *in, size_t N)
	Maximum value.
static float	exmat::Math::sum (const float *in, size_t N)
	Summation.
static float	exmat::Math::rcp (float x)
	1/x

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Detailed Description

Contains various mathematical constants, mathematical and utility functions.

Author:

Ricky Lung Man Tat

Details for Math/Utility.h

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