namespace std {
template<class T> class valarray {
public:
using value_type = T;
valarray();
explicit valarray(size_t);
valarray(const T&, size_t);
valarray(const T*, size_t);
valarray(const valarray&);
valarray(valarray&&) noexcept;
valarray(const slice_array<T>&);
valarray(const gslice_array<T>&);
valarray(const mask_array<T>&);
valarray(const indirect_array<T>&);
valarray(initializer_list<T>);
~valarray();
valarray& operator=(const valarray&);
valarray& operator=(valarray&&) noexcept;
valarray& operator=(initializer_list<T>);
valarray& operator=(const T&);
valarray& operator=(const slice_array<T>&);
valarray& operator=(const gslice_array<T>&);
valarray& operator=(const mask_array<T>&);
valarray& operator=(const indirect_array<T>&);
const T& operator[](size_t) const;
T& operator[](size_t);
valarray operator[](slice) const;
slice_array<T> operator[](slice);
valarray operator[](const gslice&) const;
gslice_array<T> operator[](const gslice&);
valarray operator[](const valarray<bool>&) const;
mask_array<T> operator[](const valarray<bool>&);
valarray operator[](const valarray<size_t>&) const;
indirect_array<T> operator[](const valarray<size_t>&);
valarray operator+() const;
valarray operator-() const;
valarray operator~() const;
valarray<bool> operator!() const;
valarray& operator*= (const T&);
valarray& operator/= (const T&);
valarray& operator%= (const T&);
valarray& operator+= (const T&);
valarray& operator-= (const T&);
valarray& operator^= (const T&);
valarray& operator&= (const T&);
valarray& operator|= (const T&);
valarray& operator<<=(const T&);
valarray& operator>>=(const T&);
valarray& operator*= (const valarray&);
valarray& operator/= (const valarray&);
valarray& operator%= (const valarray&);
valarray& operator+= (const valarray&);
valarray& operator-= (const valarray&);
valarray& operator^= (const valarray&);
valarray& operator|= (const valarray&);
valarray& operator&= (const valarray&);
valarray& operator<<=(const valarray&);
valarray& operator>>=(const valarray&);
void swap(valarray&) noexcept;
size_t size() const;
T sum() const;
T min() const;
T max() const;
valarray shift (int) const;
valarray cshift(int) const;
valarray apply(T func(T)) const;
valarray apply(T func(const T&)) const;
void resize(size_t sz, T c = T());
};
template<class T, size_t cnt> valarray(const T(&)[cnt], size_t) -> valarray<T>;
}
The class template valarray<T> is a one-dimensional smart array, with elements numbered sequentially from zero. It is a representation of the mathematical concept of an ordered set of values. For convenience, an object of type valarray<T> is referred to as an “array” throughout the remainder of [numarray]. The illusion of higher dimensionality may be produced by the familiar idiom of computed indices, together with the powerful subsetting capabilities provided by the generalized subscript operators.276
An implementation is permitted to qualify any of the functions declared in <valarray> as inline.
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