.TH "std::exponential_distribution< _RealType >" 3cxx "Tue Nov 27 2012" "libstdc++" \" -*- nroff -*-
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.SH NAME
std::exponential_distribution< _RealType > \- 
.SH SYNOPSIS
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.PP
.SS "Classes"

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.RI "struct \fBparam_type\fP"
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.SS "Public Types"

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.RI "typedef _RealType \fBresult_type\fP"
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.SS "Public Member Functions"

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.RI "\fBexponential_distribution\fP (const \fBresult_type\fP &__lambda=\fBresult_type\fP(1))"
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.RI "\fBexponential_distribution\fP (const \fBparam_type\fP &__p)"
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.RI "_RealType \fBlambda\fP () const "
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.RI "\fBresult_type\fP \fBmax\fP () const "
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.RI "\fBresult_type\fP \fBmin\fP () const "
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.RI "template<typename _UniformRandomNumberGenerator > \fBresult_type\fP \fBoperator()\fP (_UniformRandomNumberGenerator &__urng)"
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.RI "template<typename _UniformRandomNumberGenerator > \fBresult_type\fP \fBoperator()\fP (_UniformRandomNumberGenerator &__urng, const \fBparam_type\fP &__p)"
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.RI "\fBparam_type\fP \fBparam\fP () const "
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.RI "void \fBparam\fP (const \fBparam_type\fP &__param)"
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.RI "void \fBreset\fP ()"
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.SH "Detailed Description"
.PP 

.SS "template<typename _RealType = double>class std::exponential_distribution< _RealType >"
An exponential continuous distribution for random numbers\&. 

The formula for the exponential probability density function is $p(x|\lambda) = \lambda e^{-\lambda x}$\&.
.PP
Mean$\frac{1}{\lambda}$ Median$\frac{\ln 2}{\lambda}$ Mode$zero$ Range$[0, \infty]$ Standard Deviation$\frac{1}{\lambda}$ Distribution Statistics
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Definition at line 4145 of file random\&.h\&.
.SH "Member Typedef Documentation"
.PP 
.SS "template<typename _RealType = double> typedef _RealType \fBstd::exponential_distribution\fP< _RealType >::\fBresult_type\fP"
The type of the range of the distribution\&. 
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Definition at line 4152 of file random\&.h\&.
.SH "Constructor & Destructor Documentation"
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.SS "template<typename _RealType = double> \fBstd::exponential_distribution\fP< _RealType >::\fBexponential_distribution\fP (const \fBresult_type\fP &__lambda = \fC\fBresult_type\fP(1)\fP)\fC [inline]\fP, \fC [explicit]\fP"

.PP
Constructs an exponential distribution with inverse scale parameter $\lambda$\&. 
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Definition at line 4183 of file random\&.h\&.
.SH "Member Function Documentation"
.PP 
.SS "template<typename _RealType = double> _RealType \fBstd::exponential_distribution\fP< _RealType >::lambda () const\fC [inline]\fP"

.PP
Returns the inverse scale parameter of the distribution\&. 
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Definition at line 4204 of file random\&.h\&.
.SS "template<typename _RealType = double> \fBresult_type\fP \fBstd::exponential_distribution\fP< _RealType >::max () const\fC [inline]\fP"

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Returns the least upper bound value of the distribution\&. 
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Definition at line 4233 of file random\&.h\&.
.SS "template<typename _RealType = double> \fBresult_type\fP \fBstd::exponential_distribution\fP< _RealType >::min () const\fC [inline]\fP"

.PP
Returns the greatest lower bound value of the distribution\&. 
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Definition at line 4226 of file random\&.h\&.
.SS "template<typename _RealType = double> template<typename _UniformRandomNumberGenerator > \fBresult_type\fP \fBstd::exponential_distribution\fP< _RealType >::operator() (_UniformRandomNumberGenerator &__urng)\fC [inline]\fP"

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Generating functions\&. 
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Definition at line 4241 of file random\&.h\&.
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References std::exponential_distribution< _RealType >::operator()(), and std::exponential_distribution< _RealType >::param()\&.
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Referenced by std::exponential_distribution< _RealType >::operator()()\&.
.SS "template<typename _RealType = double> \fBparam_type\fP \fBstd::exponential_distribution\fP< _RealType >::param () const\fC [inline]\fP"

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Returns the parameter set of the distribution\&. 
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Definition at line 4211 of file random\&.h\&.
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Referenced by std::exponential_distribution< _RealType >::operator()(), std::operator==(), and std::operator>>()\&.
.SS "template<typename _RealType = double> void \fBstd::exponential_distribution\fP< _RealType >::param (const \fBparam_type\fP &__param)\fC [inline]\fP"

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Sets the parameter set of the distribution\&. \fBParameters:\fP
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\fI__param\fP The new parameter set of the distribution\&. 
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Definition at line 4219 of file random\&.h\&.
.SS "template<typename _RealType = double> void \fBstd::exponential_distribution\fP< _RealType >::reset ()\fC [inline]\fP"

.PP
Resets the distribution state\&. Has no effect on exponential distributions\&. 
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Definition at line 4198 of file random\&.h\&.

.SH "Author"
.PP 
Generated automatically by Doxygen for libstdc++ from the source code\&.