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std::valarray
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valarray<T> operator+=( const valarray<T>& v ); valarray<T> operator-=( const valarray<T>& v ); valarray<T> operator*=( const valarray<T>& v ); valarray<T> operator/=( const valarray<T>& v ); valarray<T> operator%=( const valarray<T>& v ); valarray<T> operator&=( const valarray<T>& v ); valarray<T> operator|=( const valarray<T>& v ); valarray<T> operator^=( const valarray<T>& v ); valarray<T> operator<<=( const valarray<T>& v ); valarray<T> operator>>=( const valarray<T>& v );
 (1)
valarray<T> operator+=( const T& val ); valarray<T> operator-=( const T& val ); valarray<T> operator*=( const T& val ); valarray<T> operator/=( const T& val ); valarray<T> operator%=( const T& val ); valarray<T> operator&=( const T& val ); valarray<T> operator|=( const T& val ); valarray<T> operator^=( const T& val ); valarray<T> operator<<=( const T& val ); valarray<T> operator>>=( const T& val );
 (2)
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Applies compound assignment operators to each element in the numeric array.
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, v.
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Each element is assigned value obtained by applying the corresponding operator to the previous value of the element and corresponding element from v.
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, size() != v.size()
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The behavior is undefined if size() != v.size()
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, v *this, .
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The behavior is undefined if any of the values in v is computed during the assignment and depends on any of the values in *this, that is, the expression on the right side of the assignment refers to a variable in the left side of the assignment.
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2)
, val.
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Each element is assigned value obtained by applying the corresponding operator to the previous value of the element and the value of val.
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v
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another numeric array
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val
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a value
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*this

()

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Each of the operators can only be instantiated if the following requirements are met:
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  • T
    :
    The indicated operator can be applied to type T
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  • T (1-3) bool (4).
    :
    The result value can be unambiguously converted to T (1-3) or bool (4).
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std::valarray. , :
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The function can be implemented with the return type different from std::valarray. In this case, the replacement type has the following properties:
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  • const - std::valarray .
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    All const member functions of std::valarray are provided.
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  • std::valarray, std::slice_array, std::gslice_array, std::mask_array std::indirect_array .
    :
    std::valarray, std::slice_array, std::gslice_array, std::mask_array and std::indirect_array can be constructed from the replacement type.
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  • , const std::valarray& .
    :
    All functions accepting a arguments of type const std::valarray& should also accept the replacement type.
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  • const std::valarray& const std::valarray& .
    :
    All functions accepting two arguments of type const std::valarray& should accept every combination of const std::valarray& and the replacement type.
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