.TH "std::chi_squared_distribution< _RealType >" 3cxx "Mon May 22 2017" "libstdc++" \" -*- nroff -*-
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.SH NAME
std::chi_squared_distribution< _RealType > \- A chi_squared_distribution random number distribution\&.  

.SH SYNOPSIS
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.PP
.SS "Classes"

.in +1c
.ti -1c
.RI "struct \fBparam_type\fP"
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.in -1c
.SS "Public Types"

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.ti -1c
.RI "typedef _RealType \fBresult_type\fP"
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.SS "Public Member Functions"

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.RI "\fBchi_squared_distribution\fP (_RealType __n=_RealType(1))"
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.RI "\fBchi_squared_distribution\fP (const \fBparam_type\fP &__p)"
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.RI "template<typename _ForwardIterator , typename _UniformRandomNumberGenerator > void \fB__generate\fP (_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator &__urng)"
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.ti -1c
.RI "template<typename _ForwardIterator , typename _UniformRandomNumberGenerator > void \fB__generate\fP (_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator &__urng, const \fBparam_type\fP &__p)"
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.RI "template<typename _UniformRandomNumberGenerator > void \fB__generate\fP (\fBresult_type\fP *__f, \fBresult_type\fP *__t, _UniformRandomNumberGenerator &__urng)"
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.ti -1c
.RI "template<typename _UniformRandomNumberGenerator > void \fB__generate\fP (\fBresult_type\fP *__f, \fBresult_type\fP *__t, _UniformRandomNumberGenerator &__urng, const \fBparam_type\fP &__p)"
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.RI "\fBresult_type\fP \fBmax\fP () const"
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.RI "Returns the least upper bound value of the distribution\&. "
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.RI "\fBresult_type\fP \fBmin\fP () const"
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.RI "Returns the greatest lower bound value of the distribution\&. "
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.RI "_RealType \fBn\fP () const"
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.RI "template<typename _UniformRandomNumberGenerator > \fBresult_type\fP \fBoperator()\fP (_UniformRandomNumberGenerator &__urng)"
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.RI "Generating functions\&. "
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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 "Returns the parameter set of the distribution\&. "
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.RI "void \fBparam\fP (const \fBparam_type\fP &__param)"
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.RI "Sets the parameter set of the distribution\&. "
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.RI "void \fBreset\fP ()"
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.RI "Resets the distribution state\&. "
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.SS "Friends"

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.RI "template<typename _RealType1 , typename _CharT , typename _Traits > \fBstd::basic_ostream\fP< _CharT, _Traits > & \fBoperator<<\fP (\fBstd::basic_ostream\fP< _CharT, _Traits > &__os, const \fBstd::chi_squared_distribution\fP< _RealType1 > &__x)"
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.RI "Inserts a chi_squared_distribution random number distribution \fC__x\fP into the output stream \fC__os\fP\&. "
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.RI "bool \fBoperator==\fP (const \fBchi_squared_distribution\fP &__d1, const \fBchi_squared_distribution\fP &__d2)"
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.RI "Return true if two Chi-squared distributions have the same parameters and the sequences that would be generated are equal\&. "
.ti -1c
.RI "template<typename _RealType1 , typename _CharT , typename _Traits > \fBstd::basic_istream\fP< _CharT, _Traits > & \fBoperator>>\fP (\fBstd::basic_istream\fP< _CharT, _Traits > &__is, \fBstd::chi_squared_distribution\fP< _RealType1 > &__x)"
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.RI "Extracts a chi_squared_distribution random number distribution \fC__x\fP from the input stream \fC__is\fP\&. "
.in -1c
.SH "Detailed Description"
.PP 

.SS "template<typename _RealType = double>
.br
class std::chi_squared_distribution< _RealType >"
A chi_squared_distribution random number distribution\&. 

The formula for the normal probability mass function is $p(x|n) = \frac{x^{(n/2) - 1}e^{-x/2}}{\Gamma(n/2) 2^{n/2}}$ 
.PP
Definition at line 2574 of file random\&.h\&.
.SH "Member Typedef Documentation"
.PP 
.SS "template<typename _RealType = double> typedef _RealType \fBstd::chi_squared_distribution\fP< _RealType >::\fBresult_type\fP"
The type of the range of the distribution\&. 
.PP
Definition at line 2577 of file random\&.h\&.
.SH "Member Function Documentation"
.PP 
.SS "template<typename _RealType = double> \fBresult_type\fP \fBstd::chi_squared_distribution\fP< _RealType >::max () const\fC [inline]\fP"

.PP
Returns the least upper bound value of the distribution\&. 
.PP
Definition at line 2659 of file random\&.h\&.
.PP
References std::numeric_limits< _Tp >::max()\&.
.SS "template<typename _RealType = double> \fBresult_type\fP \fBstd::chi_squared_distribution\fP< _RealType >::min () const\fC [inline]\fP"

.PP
Returns the greatest lower bound value of the distribution\&. 
.PP
Definition at line 2652 of file random\&.h\&.
.SS "template<typename _RealType = double> template<typename _UniformRandomNumberGenerator > \fBresult_type\fP \fBstd::chi_squared_distribution\fP< _RealType >::operator() (_UniformRandomNumberGenerator & __urng)\fC [inline]\fP"

.PP
Generating functions\&. 
.PP
Definition at line 2667 of file random\&.h\&.
.SS "template<typename _RealType = double> \fBparam_type\fP \fBstd::chi_squared_distribution\fP< _RealType >::param () const\fC [inline]\fP"

.PP
Returns the parameter set of the distribution\&. 
.PP
Definition at line 2637 of file random\&.h\&.
.SS "template<typename _RealType = double> void \fBstd::chi_squared_distribution\fP< _RealType >::param (const \fBparam_type\fP & __param)\fC [inline]\fP"

.PP
Sets the parameter set of the distribution\&. 
.PP
\fBParameters:\fP
.RS 4
\fI__param\fP The new parameter set of the distribution\&. 
.RE
.PP

.PP
Definition at line 2645 of file random\&.h\&.
.SS "template<typename _RealType = double> void \fBstd::chi_squared_distribution\fP< _RealType >::reset ()\fC [inline]\fP"

.PP
Resets the distribution state\&. 
.PP
Definition at line 2623 of file random\&.h\&.
.SH "Friends And Related Function Documentation"
.PP 
.SS "template<typename _RealType = double> template<typename _RealType1 , typename _CharT , typename _Traits > \fBstd::basic_ostream\fP<_CharT, _Traits>& operator<< (\fBstd::basic_ostream\fP< _CharT, _Traits > & __os, const \fBstd::chi_squared_distribution\fP< _RealType1 > & __x)\fC [friend]\fP"

.PP
Inserts a chi_squared_distribution random number distribution \fC__x\fP into the output stream \fC__os\fP\&. 
.PP
\fBParameters:\fP
.RS 4
\fI__os\fP An output stream\&. 
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\fI__x\fP A chi_squared_distribution random number distribution\&.
.RE
.PP
\fBReturns:\fP
.RS 4
The output stream with the state of \fC__x\fP inserted or in an error state\&. 
.RE
.PP

.SS "template<typename _RealType = double> bool operator== (const \fBchi_squared_distribution\fP< _RealType > & __d1, const \fBchi_squared_distribution\fP< _RealType > & __d2)\fC [friend]\fP"

.PP
Return true if two Chi-squared distributions have the same parameters and the sequences that would be generated are equal\&. 
.PP
Definition at line 2718 of file random\&.h\&.
.SS "template<typename _RealType = double> template<typename _RealType1 , typename _CharT , typename _Traits > \fBstd::basic_istream\fP<_CharT, _Traits>& operator>> (\fBstd::basic_istream\fP< _CharT, _Traits > & __is, \fBstd::chi_squared_distribution\fP< _RealType1 > & __x)\fC [friend]\fP"

.PP
Extracts a chi_squared_distribution random number distribution \fC__x\fP from the input stream \fC__is\fP\&. 
.PP
\fBParameters:\fP
.RS 4
\fI__is\fP An input stream\&. 
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\fI__x\fP A chi_squared_distribution random number generator engine\&.
.RE
.PP
\fBReturns:\fP
.RS 4
The input stream with \fC__x\fP extracted or in an error state\&. 
.RE
.PP


.SH "Author"
.PP 
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