Provided by: libstdc++-13-doc_13.2.0-23ubuntu4_all
NAME
std::valarray< _Tp > - Smart array designed to support numeric processing.
SYNOPSIS
#include <valarray> Public Types typedef _Tp value_type Public Member Functions valarray () noexcept Construct an empty array. template<class _Dom > valarray (const _Expr< _Dom, _Tp > &__e) valarray (const _Tp &, size_t) Construct an array with n elements initialized to t. template<typename _Tp > valarray (const _Tp *__restrict__ __p, size_t __n) valarray (const _Tp *__restrict__, size_t) Construct an array initialized to the first n elements of t. valarray (const gslice_array< _Tp > &) Construct an array with the same size and values in ga. valarray (const indirect_array< _Tp > &) Construct an array with the same size and values in ia. valarray (const mask_array< _Tp > &) Construct an array with the same size and values in ma. valarray (const slice_array< _Tp > &) Construct an array with the same size and values in sa. valarray (const valarray &) Copy constructor. valarray (initializer_list< _Tp >) Construct an array with an initializer_list of values. valarray (size_t) Construct an array with n elements. valarray (valarray &&) noexcept Move constructor. _Expr< _ValFunClos< _ValArray, _Tp >, _Tp > apply (_Tp __func(_Tp)) const Apply a function to the array. _Expr< _RefFunClos< _ValArray, _Tp >, _Tp > apply (_Tp __func(const _Tp &)) const Apply a function to the array. valarray< _Tp > cshift (int __n) const Return a rotated array. _Tp max () const Return the maximum element using operator<(). _Tp min () const Return the minimum element using operator<(). _UnaryOp< __logical_not >::_Rt operator! () const Return a new valarray by applying unary ! to each element. template<class _Dom > valarray< _Tp > & operator%= (const _Expr< _Dom, _Tp > &) valarray< _Tp > & operator%= (const _Tp &) Set each element e of array to e % t. valarray< _Tp > & operator%= (const valarray< _Tp > &) Modulo elements of array by corresponding elements of v. template<class _Dom > valarray< _Tp > & operator&= (const _Expr< _Dom, _Tp > &) valarray< _Tp > & operator&= (const _Tp &) Set each element e of array to e & t. valarray< _Tp > & operator&= (const valarray< _Tp > &) Logical and corresponding elements of v with elements of array. template<class _Dom > valarray< _Tp > & operator*= (const _Expr< _Dom, _Tp > &) valarray< _Tp > & operator*= (const _Tp &) Multiply each element of array by t. valarray< _Tp > & operator*= (const valarray< _Tp > &) Multiply elements of array by corresponding elements of v. _UnaryOp< __unary_plus >::_Rt operator+ () const Return a new valarray by applying unary + to each element. template<class _Dom > valarray< _Tp > & operator+= (const _Expr< _Dom, _Tp > &) valarray< _Tp > & operator+= (const _Tp &) Add t to each element of array. valarray< _Tp > & operator+= (const valarray< _Tp > &) Add corresponding elements of v to elements of array. _UnaryOp< __negate >::_Rt operator- () const Return a new valarray by applying unary - to each element. template<class _Dom > valarray< _Tp > & operator-= (const _Expr< _Dom, _Tp > &) valarray< _Tp > & operator-= (const _Tp &) Subtract t to each element of array. valarray< _Tp > & operator-= (const valarray< _Tp > &) Subtract corresponding elements of v from elements of array. template<class _Dom > valarray< _Tp > & operator/= (const _Expr< _Dom, _Tp > &) valarray< _Tp > & operator/= (const _Tp &) Divide each element of array by t. valarray< _Tp > & operator/= (const valarray< _Tp > &) Divide elements of array by corresponding elements of v. template<class _Dom > valarray< _Tp > & operator<<= (const _Expr< _Dom, _Tp > &) valarray< _Tp > & operator<<= (const _Tp &) Left shift each element e of array by t bits. valarray< _Tp > & operator<<= (const valarray< _Tp > &) Left shift elements of array by corresponding elements of v. template<class _Dom > valarray< _Tp > & operator= (const _Expr< _Dom, _Tp > &) valarray< _Tp > & operator= (const _Tp &__t) Assign elements to a value. valarray< _Tp > & operator= (const gslice_array< _Tp > &__ga) Assign elements to an array subset. valarray< _Tp > & operator= (const indirect_array< _Tp > &__ia) Assign elements to an array subset. valarray< _Tp > & operator= (const mask_array< _Tp > &__ma) Assign elements to an array subset. valarray< _Tp > & operator= (const slice_array< _Tp > &__sa) Assign elements to an array subset. valarray< _Tp > & operator= (const valarray< _Tp > &__v) Assign elements to an array. valarray & operator= (initializer_list< _Tp > __l) Assign elements to an initializer_list. valarray< _Tp > & operator= (valarray< _Tp > &&__v) noexcept Move assign elements to an array. template<class _Dom > valarray< _Tp > & operator>>= (const _Expr< _Dom, _Tp > &) valarray< _Tp > & operator>>= (const _Tp &) Right shift each element e of array by t bits. valarray< _Tp > & operator>>= (const valarray< _Tp > &) Right shift elements of array by corresponding elements of v. gslice_array< _Tp > operator[] (const gslice &__s) Return a reference to an array subset. _Expr< _GClos< _ValArray, _Tp >, _Tp > operator[] (const gslice &__s) const Return an array subset. mask_array< _Tp > operator[] (const valarray< bool > &__m) Return a reference to an array subset. valarray< _Tp > operator[] (const valarray< bool > &__m) const Return an array subset. indirect_array< _Tp > operator[] (const valarray< size_t > &__i) Return a reference to an array subset. _Expr< _IClos< _ValArray, _Tp >, _Tp > operator[] (const valarray< size_t > &__i) const Return an array subset. _Tp & operator[] (size_t __i) noexcept const _Tp & operator[] (size_t) const noexcept slice_array< _Tp > operator[] (slice __s) Return a reference to an array subset. _Expr< _SClos< _ValArray, _Tp >, _Tp > operator[] (slice __s) const Return an array subset. template<class _Dom > valarray< _Tp > & operator^= (const _Expr< _Dom, _Tp > &) valarray< _Tp > & operator^= (const _Tp &) Set each element e of array to e ^ t. valarray< _Tp > & operator^= (const valarray< _Tp > &) Logical xor corresponding elements of v with elements of array. template<class _Dom > valarray< _Tp > & operator|= (const _Expr< _Dom, _Tp > &) valarray< _Tp > & operator|= (const _Tp &) Set each element e of array to e | t. valarray< _Tp > & operator|= (const valarray< _Tp > &) Logical or corresponding elements of v with elements of array. _UnaryOp< __bitwise_not >::_Rt operator~ () const Return a new valarray by applying unary ~ to each element. void resize (size_t __size, _Tp __c=_Tp()) Resize array. valarray< _Tp > shift (int __n) const Return a shifted array. size_t size () const Return the number of elements in array. _Tp sum () const Return the sum of all elements in the array. void swap (valarray< _Tp > &__v) noexcept Swap. Friends struct _Array< _Tp >
Detailed Description
template<class _Tp> class std::valarray< _Tp >"Smart array designed to support numeric processing. A valarray is an array that provides constraints intended to allow for effective optimization of numeric array processing by reducing the aliasing that can result from pointer representations. It represents a one-dimensional array from which different multidimensional subsets can be accessed and modified. Template Parameters _Tp Type of object in the array.
Constructor & Destructor Documentation
template<class _Tp > std::valarray< _Tp >::valarray (const _Tp * __restrict__, size_t) Construct an array initialized to the first n elements of t.
Member Function Documentation
template<class _Tp > _UnaryOp< __logical_not >::_Rt std::valarray< _Tp >::operator! () const Return a new valarray by applying unary ! to each element. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator%= (const _Tp &) Set each element e of array to e % t. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator%= (const valarray< _Tp > &) Modulo elements of array by corresponding elements of v. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator&= (const _Tp &) Set each element e of array to e & t. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator&= (const valarray< _Tp > &) Logical and corresponding elements of v with elements of array. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator*= (const _Tp &) Multiply each element of array by t. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator*= (const valarray< _Tp > &) Multiply elements of array by corresponding elements of v. template<class _Tp > _UnaryOp< __unary_plus >::_Rt std::valarray< _Tp >::operator+ () const Return a new valarray by applying unary + to each element. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator+= (const _Tp &) Add t to each element of array. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator+= (const valarray< _Tp > &) Add corresponding elements of v to elements of array. template<class _Tp > _UnaryOp< __negate >::_Rt std::valarray< _Tp >::operator- () const Return a new valarray by applying unary - to each element. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator-= (const _Tp &) Subtract t to each element of array. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator-= (const valarray< _Tp > &) Subtract corresponding elements of v from elements of array. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator/= (const _Tp &) Divide each element of array by t. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator/= (const valarray< _Tp > &) Divide elements of array by corresponding elements of v. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator<<= (const _Tp &) Left shift each element e of array by t bits. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator<<= (const valarray< _Tp > &) Left shift elements of array by corresponding elements of v. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator>>= (const _Tp &) Right shift each element e of array by t bits. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator>>= (const valarray< _Tp > &) Right shift elements of array by corresponding elements of v. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator^= (const _Tp &) Set each element e of array to e ^ t. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator^= (const valarray< _Tp > &) Logical xor corresponding elements of v with elements of array. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator|= (const _Tp &) Set each element e of array to e | t. template<class _Tp > valarray< _Tp > & std::valarray< _Tp >::operator|= (const valarray< _Tp > &) Logical or corresponding elements of v with elements of array. template<class _Tp > _UnaryOp< __bitwise_not >::_Rt std::valarray< _Tp >::operator~ () const Return a new valarray by applying unary ~ to each element.
Author
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