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libstdc++
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#include <random>
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| typedef _RealType | result_type |
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| std::basic_ostream< _CharT, _Traits > & | operator<< (std::basic_ostream< _CharT, _Traits > &__os, const std::normal_distribution< _RealType1 > &__x) |
| template<typename _RealType1 > | |
| bool | operator== (const std::normal_distribution< _RealType1 > &__d1, const std::normal_distribution< _RealType1 > &__d2) |
| template<typename _RealType1 , typename _CharT , typename _Traits > | |
| std::basic_istream< _CharT, _Traits > & | operator>> (std::basic_istream< _CharT, _Traits > &__is, std::normal_distribution< _RealType1 > &__x) |
A normal continuous distribution for random numbers.
The formula for the normal probability density function is
![\[
p(x|\mu,\sigma) = \frac{1}{\sigma \sqrt{2 \pi}}
e^{- \frac{{x - \mu}^ {2}}{2 \sigma ^ {2}} }
\]](form_6.png)
| typedef _RealType std::normal_distribution< _RealType >::result_type |
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Returns the least upper bound value of the distribution.
Definition at line 2230 of file random.h.
References std::numeric_limits< _Tp >::max().
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Returns the greatest lower bound value of the distribution.
Definition at line 2223 of file random.h.
References std::numeric_limits< _Tp >::lowest().
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Generating functions.
Definition at line 2238 of file random.h.
References std::normal_distribution< _RealType >::operator()().
Referenced by std::normal_distribution< _RealType >::operator()().
| normal_distribution< _RealType >::result_type std::normal_distribution< _RealType >::operator() | ( | _UniformRandomNumberGenerator & | __urng, |
| const param_type & | __param | ||
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Polar method due to Marsaglia.
Devroye, L. Non-Uniform Random Variates Generation. Springer-Verlag, New York, 1986, Ch. V, Sect. 4.4.
Definition at line 1812 of file bits/random.tcc.
References std::log(), and std::sqrt().
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Resets the distribution state.
Definition at line 2187 of file random.h.
Referenced by std::lognormal_distribution< _RealType >::reset(), std::gamma_distribution< _RealType >::reset(), std::student_t_distribution< _RealType >::reset(), std::binomial_distribution< _IntType >::reset(), and std::poisson_distribution< _IntType >::reset().
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Inserts a normal_distribution random number distribution __x into the output stream __os.
| __os | An output stream. |
| __x | A normal_distribution random number distribution. |
__x inserted or in an error state.
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Return true if two normal distributions have the same parameters and the sequences that would be generated are equal.
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Extracts a normal_distribution random number distribution __x from the input stream __is.
| __is | An input stream. |
| __x | A normal_distribution random number generator engine. |
__x extracted or in an error state.