.TH "std::chi_squared_distribution< _RealType >" 3cxx "Sun Feb 7 2021" "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"

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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 "\fBchi_squared_distribution\fP (_RealType __n)"
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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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.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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.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\&. "
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.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\&. "
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.SH "Detailed Description"
.PP 

.SS "template<typename _RealType = double>
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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 2624 of file random\&.h\&.

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