diff options
Diffstat (limited to 'contrib/llvm-project/libcxx/include/__random/piecewise_constant_distribution.h')
| -rw-r--r-- | contrib/llvm-project/libcxx/include/__random/piecewise_constant_distribution.h | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/contrib/llvm-project/libcxx/include/__random/piecewise_constant_distribution.h b/contrib/llvm-project/libcxx/include/__random/piecewise_constant_distribution.h index 5b26ab65e63f..3a60e5533d77 100644 --- a/contrib/llvm-project/libcxx/include/__random/piecewise_constant_distribution.h +++ b/contrib/llvm-project/libcxx/include/__random/piecewise_constant_distribution.h @@ -29,6 +29,9 @@ _LIBCPP_BEGIN_NAMESPACE_STD template<class _RealType = double> class _LIBCPP_TEMPLATE_VIS piecewise_constant_distribution { + static_assert(__libcpp_random_is_valid_realtype<_RealType>::value, + "RealType must be a supported floating-point type"); + public: // types typedef _RealType result_type; @@ -55,15 +58,15 @@ public: _LIBCPP_HIDE_FROM_ABI param_type(param_type const&) = default; _LIBCPP_HIDE_FROM_ABI param_type & operator=(const param_type& __rhs); - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI vector<result_type> intervals() const {return __b_;} - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI vector<result_type> densities() const {return __densities_;} - friend _LIBCPP_INLINE_VISIBILITY + friend _LIBCPP_HIDE_FROM_ABI bool operator==(const param_type& __x, const param_type& __y) {return __x.__densities_ == __y.__densities_ && __x.__b_ == __y.__b_;} - friend _LIBCPP_INLINE_VISIBILITY + friend _LIBCPP_HIDE_FROM_ABI bool operator!=(const param_type& __x, const param_type& __y) {return !(__x == __y);} @@ -90,10 +93,10 @@ private: public: // constructor and reset functions - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI piecewise_constant_distribution() {} template<class _InputIteratorB, class _InputIteratorW> - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI piecewise_constant_distribution(_InputIteratorB __f_b, _InputIteratorB __l_b, _InputIteratorW __f_w) @@ -101,54 +104,54 @@ public: #ifndef _LIBCPP_CXX03_LANG template<class _UnaryOperation> - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI piecewise_constant_distribution(initializer_list<result_type> __bl, _UnaryOperation __fw) : __p_(__bl, __fw) {} #endif // _LIBCPP_CXX03_LANG template<class _UnaryOperation> - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI piecewise_constant_distribution(size_t __nw, result_type __xmin, result_type __xmax, _UnaryOperation __fw) : __p_(__nw, __xmin, __xmax, __fw) {} - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI explicit piecewise_constant_distribution(const param_type& __p) : __p_(__p) {} - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI void reset() {} // generating functions template<class _URNG> - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI result_type operator()(_URNG& __g) {return (*this)(__g, __p_);} template<class _URNG> _LIBCPP_HIDE_FROM_ABI result_type operator()(_URNG& __g, const param_type& __p); // property functions - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI vector<result_type> intervals() const {return __p_.intervals();} - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI vector<result_type> densities() const {return __p_.densities();} - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI param_type param() const {return __p_;} - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI void param(const param_type& __p) {__p_ = __p;} - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI result_type min() const {return __p_.__b_.front();} - _LIBCPP_INLINE_VISIBILITY + _LIBCPP_HIDE_FROM_ABI result_type max() const {return __p_.__b_.back();} - friend _LIBCPP_INLINE_VISIBILITY + friend _LIBCPP_HIDE_FROM_ABI bool operator==(const piecewise_constant_distribution& __x, const piecewise_constant_distribution& __y) {return __x.__p_ == __y.__p_;} - friend _LIBCPP_INLINE_VISIBILITY + friend _LIBCPP_HIDE_FROM_ABI bool operator!=(const piecewise_constant_distribution& __x, const piecewise_constant_distribution& __y) {return !(__x == __y);} @@ -188,14 +191,14 @@ void piecewise_constant_distribution<_RealType>::param_type::__init() { // __densities_ contains non-normalized areas - result_type __total_area = _VSTD::accumulate(__densities_.begin(), + result_type __total_area = std::accumulate(__densities_.begin(), __densities_.end(), result_type()); for (size_t __i = 0; __i < __densities_.size(); ++__i) __densities_[__i] /= __total_area; // __densities_ contains normalized areas __areas_.assign(__densities_.size(), result_type()); - _VSTD::partial_sum(__densities_.begin(), __densities_.end() - 1, + std::partial_sum(__densities_.begin(), __densities_.end() - 1, __areas_.begin() + 1); // __areas_ contains partial sums of normalized areas: [0, __densities_ - 1] __densities_.back() = 1 - __areas_.back(); // correct round off error @@ -289,7 +292,7 @@ piecewise_constant_distribution<_RealType>::operator()(_URNG& __g, const param_t static_assert(__libcpp_random_is_valid_urng<_URNG>::value, ""); typedef uniform_real_distribution<result_type> _Gen; result_type __u = _Gen()(__g); - ptrdiff_t __k = _VSTD::upper_bound(__p.__areas_.begin(), __p.__areas_.end(), + ptrdiff_t __k = std::upper_bound(__p.__areas_.begin(), __p.__areas_.end(), __u) - __p.__areas_.begin() - 1; return (__u - __p.__areas_[__k]) / __p.__densities_[__k] + __p.__b_[__k]; } |