| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___RANDOM_LOGNORMAL_DISTRIBUTION_H |
| #define _LIBCPP___RANDOM_LOGNORMAL_DISTRIBUTION_H |
| |
| #include <__config> |
| #include <__random/normal_distribution.h> |
| #include <cmath> |
| #include <iosfwd> |
| #include <limits> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_PUSH_MACROS |
| #include <__undef_macros> |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #ifdef _LIBCPP_ABI_OLD_LOGNORMAL_DISTRIBUTION |
| |
| template<class _RealType = double> |
| class _LIBCPP_TEMPLATE_VIS lognormal_distribution |
| { |
| public: |
| // types |
| typedef _RealType result_type; |
| |
| class _LIBCPP_TEMPLATE_VIS param_type |
| { |
| normal_distribution<result_type> __nd_; |
| public: |
| typedef lognormal_distribution distribution_type; |
| |
| _LIBCPP_INLINE_VISIBILITY |
| explicit param_type(result_type __m = 0, result_type __s = 1) |
| : __nd_(__m, __s) {} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| result_type m() const {return __nd_.mean();} |
| _LIBCPP_INLINE_VISIBILITY |
| result_type s() const {return __nd_.stddev();} |
| |
| friend _LIBCPP_INLINE_VISIBILITY |
| bool operator==(const param_type& __x, const param_type& __y) |
| {return __x.__nd_ == __y.__nd_;} |
| friend _LIBCPP_INLINE_VISIBILITY |
| bool operator!=(const param_type& __x, const param_type& __y) |
| {return !(__x == __y);} |
| friend class lognormal_distribution; |
| |
| template <class _CharT, class _Traits, class _RT> |
| friend |
| basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, |
| const lognormal_distribution<_RT>& __x); |
| |
| template <class _CharT, class _Traits, class _RT> |
| friend |
| basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, |
| lognormal_distribution<_RT>& __x); |
| }; |
| |
| private: |
| param_type __p_; |
| |
| public: |
| // constructor and reset functions |
| #ifndef _LIBCPP_CXX03_LANG |
| _LIBCPP_INLINE_VISIBILITY |
| lognormal_distribution() : lognormal_distribution(0) {} |
| _LIBCPP_INLINE_VISIBILITY |
| explicit lognormal_distribution(result_type __m, result_type __s = 1) |
| : __p_(param_type(__m, __s)) {} |
| #else |
| _LIBCPP_INLINE_VISIBILITY |
| explicit lognormal_distribution(result_type __m = 0, |
| result_type __s = 1) |
| : __p_(param_type(__m, __s)) {} |
| #endif |
| _LIBCPP_INLINE_VISIBILITY |
| explicit lognormal_distribution(const param_type& __p) |
| : __p_(__p) {} |
| _LIBCPP_INLINE_VISIBILITY |
| void reset() {__p_.__nd_.reset();} |
| |
| // generating functions |
| template<class _URNG> |
| _LIBCPP_INLINE_VISIBILITY |
| result_type operator()(_URNG& __g) |
| {return (*this)(__g, __p_);} |
| template<class _URNG> |
| _LIBCPP_INLINE_VISIBILITY |
| result_type operator()(_URNG& __g, const param_type& __p) |
| {return _VSTD::exp(const_cast<normal_distribution<result_type>&>(__p.__nd_)(__g));} |
| |
| // property functions |
| _LIBCPP_INLINE_VISIBILITY |
| result_type m() const {return __p_.m();} |
| _LIBCPP_INLINE_VISIBILITY |
| result_type s() const {return __p_.s();} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| param_type param() const {return __p_;} |
| _LIBCPP_INLINE_VISIBILITY |
| void param(const param_type& __p) {__p_ = __p;} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| result_type min() const {return 0;} |
| _LIBCPP_INLINE_VISIBILITY |
| result_type max() const {return numeric_limits<result_type>::infinity();} |
| |
| friend _LIBCPP_INLINE_VISIBILITY |
| bool operator==(const lognormal_distribution& __x, |
| const lognormal_distribution& __y) |
| {return __x.__p_ == __y.__p_;} |
| friend _LIBCPP_INLINE_VISIBILITY |
| bool operator!=(const lognormal_distribution& __x, |
| const lognormal_distribution& __y) |
| {return !(__x == __y);} |
| |
| template <class _CharT, class _Traits, class _RT> |
| friend |
| basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, |
| const lognormal_distribution<_RT>& __x); |
| |
| template <class _CharT, class _Traits, class _RT> |
| friend |
| basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, |
| lognormal_distribution<_RT>& __x); |
| }; |
| |
| template <class _CharT, class _Traits, class _RT> |
| inline _LIBCPP_INLINE_VISIBILITY |
| basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, |
| const lognormal_distribution<_RT>& __x) |
| { |
| return __os << __x.__p_.__nd_; |
| } |
| |
| template <class _CharT, class _Traits, class _RT> |
| inline _LIBCPP_INLINE_VISIBILITY |
| basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, |
| lognormal_distribution<_RT>& __x) |
| { |
| return __is >> __x.__p_.__nd_; |
| } |
| |
| #else // _LIBCPP_ABI_OLD_LOGNORMAL_DISTRIBUTION |
| |
| template<class _RealType = double> |
| class _LIBCPP_TEMPLATE_VIS lognormal_distribution |
| { |
| public: |
| // types |
| typedef _RealType result_type; |
| |
| class _LIBCPP_TEMPLATE_VIS param_type |
| { |
| result_type __m_; |
| result_type __s_; |
| public: |
| typedef lognormal_distribution distribution_type; |
| |
| _LIBCPP_INLINE_VISIBILITY |
| explicit param_type(result_type __m = 0, result_type __s = 1) |
| : __m_(__m), __s_(__s) {} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| result_type m() const {return __m_;} |
| _LIBCPP_INLINE_VISIBILITY |
| result_type s() const {return __s_;} |
| |
| friend _LIBCPP_INLINE_VISIBILITY |
| bool operator==(const param_type& __x, const param_type& __y) |
| {return __x.__m_ == __y.__m_ && __x.__s_ == __y.__s_;} |
| friend _LIBCPP_INLINE_VISIBILITY |
| bool operator!=(const param_type& __x, const param_type& __y) |
| {return !(__x == __y);} |
| }; |
| |
| private: |
| normal_distribution<result_type> __nd_; |
| |
| public: |
| // constructor and reset functions |
| #ifndef _LIBCPP_CXX03_LANG |
| _LIBCPP_INLINE_VISIBILITY |
| lognormal_distribution() : lognormal_distribution(0) {} |
| _LIBCPP_INLINE_VISIBILITY |
| explicit lognormal_distribution(result_type __m, result_type __s = 1) |
| : __nd_(__m, __s) {} |
| #else |
| _LIBCPP_INLINE_VISIBILITY |
| explicit lognormal_distribution(result_type __m = 0, |
| result_type __s = 1) |
| : __nd_(__m, __s) {} |
| #endif |
| _LIBCPP_INLINE_VISIBILITY |
| explicit lognormal_distribution(const param_type& __p) |
| : __nd_(__p.m(), __p.s()) {} |
| _LIBCPP_INLINE_VISIBILITY |
| void reset() {__nd_.reset();} |
| |
| // generating functions |
| template<class _URNG> |
| _LIBCPP_INLINE_VISIBILITY |
| result_type operator()(_URNG& __g) |
| { |
| return _VSTD::exp(__nd_(__g)); |
| } |
| |
| template<class _URNG> |
| _LIBCPP_INLINE_VISIBILITY |
| result_type operator()(_URNG& __g, const param_type& __p) |
| { |
| typename normal_distribution<result_type>::param_type __pn(__p.m(), __p.s()); |
| return _VSTD::exp(__nd_(__g, __pn)); |
| } |
| |
| // property functions |
| _LIBCPP_INLINE_VISIBILITY |
| result_type m() const {return __nd_.mean();} |
| _LIBCPP_INLINE_VISIBILITY |
| result_type s() const {return __nd_.stddev();} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| param_type param() const {return param_type(__nd_.mean(), __nd_.stddev());} |
| _LIBCPP_INLINE_VISIBILITY |
| void param(const param_type& __p) |
| { |
| typename normal_distribution<result_type>::param_type __pn(__p.m(), __p.s()); |
| __nd_.param(__pn); |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| result_type min() const {return 0;} |
| _LIBCPP_INLINE_VISIBILITY |
| result_type max() const {return numeric_limits<result_type>::infinity();} |
| |
| friend _LIBCPP_INLINE_VISIBILITY |
| bool operator==(const lognormal_distribution& __x, |
| const lognormal_distribution& __y) |
| {return __x.__nd_ == __y.__nd_;} |
| friend _LIBCPP_INLINE_VISIBILITY |
| bool operator!=(const lognormal_distribution& __x, |
| const lognormal_distribution& __y) |
| {return !(__x == __y);} |
| |
| template <class _CharT, class _Traits, class _RT> |
| friend |
| basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, |
| const lognormal_distribution<_RT>& __x); |
| |
| template <class _CharT, class _Traits, class _RT> |
| friend |
| basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, |
| lognormal_distribution<_RT>& __x); |
| }; |
| |
| template <class _CharT, class _Traits, class _RT> |
| inline _LIBCPP_INLINE_VISIBILITY |
| basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, |
| const lognormal_distribution<_RT>& __x) |
| { |
| return __os << __x.__nd_; |
| } |
| |
| template <class _CharT, class _Traits, class _RT> |
| inline _LIBCPP_INLINE_VISIBILITY |
| basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, |
| lognormal_distribution<_RT>& __x) |
| { |
| return __is >> __x.__nd_; |
| } |
| |
| #endif // _LIBCPP_ABI_OLD_LOGNORMAL_DISTRIBUTION |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| _LIBCPP_POP_MACROS |
| |
| #endif // _LIBCPP___RANDOM_LOGNORMAL_DISTRIBUTION_H |
