std::cauchy_distribution

 

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std::cauchy_distribution

Member functions

cauchy_distribution::cauchy_distribution

cauchy_distribution::reset

Generation

cauchy_distribution::operator()

Characteristics

cauchy_distribution::acauchy_distribution::b

cauchy_distribution::param

cauchy_distribution::min

cauchy_distribution::max

Non-member functions

operator==operator!=

operator<<operator>>

 

Defined in header <random>
template< class RealType = double > class cauchy_distribution;		(since C++11)

Produces random numbers according to a Cauchy distribution (also called Lorentz distribution):

f(x; a,b) = ⎛
⎜
⎝bπ ⎡
⎢
⎣1 + ⎛
⎜
⎝

x - a

b

⎞
⎟
⎠2
⎤
⎥
⎦⎞
⎟
⎠-1

std::cauchy_distribution satisfies all requirements of RandomNumberDistribution

Template parameters

RealType

-

The result type generated by the generator. The effect is undefined if this is not one of float, double, or long double.

Member types

Member type	Definition
result_type	RealType
param_type	the type of the parameter set, see RandomNumberDistribution.

Member functions

(constructor)	constructs new distribution (public member function)
reset	resets the internal state of the distribution (public member function)
Generation
operator()	generates the next random number in the distribution (public member function)
Characteristics
ab	returns the distribution parameters (public member function)
param	gets or sets the distribution parameter object (public member function)
min	returns the minimum potentially generated value (public member function)
max	returns the maximum potentially generated value (public member function)

Non-member functions

operator==operator!=	compares two distribution objects (function)
operator<<operator>>	performs stream input and output on pseudo-random number distribution (function template)

External links

Weisstein, Eric W. "Cauchy Distribution." From MathWorld--A Wolfram Web Resource. Cauchy Distribution. From Wikipedia.