From Jason Turner

[valarray.binary]

C++17 → C++20 7.8 KB 112 lines
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- #### `valarray` binary operators <a id="valarray.binary">[[valarray.binary]]</a>
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  ``` cpp
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- template<class T> valarray<T> operator*
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- (const valarray<T>&, const valarray<T>&);
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- template<class T> valarray<T> operator/
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- (const valarray<T>&, const valarray<T>&);
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- template<class T> valarray<T> operator%
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- (const valarray<T>&, const valarray<T>&);
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- template<class T> valarray<T> operator+
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- (const valarray<T>&, const valarray<T>&);
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- template<class T> valarray<T> operator-
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- (const valarray<T>&, const valarray<T>&);
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- template<class T> valarray<T> operator^
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- (const valarray<T>&, const valarray<T>&);
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- template<class T> valarray<T> operator&
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- (const valarray<T>&, const valarray<T>&);
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- template<class T> valarray<T> operator|
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- (const valarray<T>&, const valarray<T>&);
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- template<class T> valarray<T> operator<<
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- (const valarray<T>&, const valarray<T>&);
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- template<class T> valarray<T> operator>>
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- (const valarray<T>&, const valarray<T>&);
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  ```
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- *Requires:* Each of these operators may only be instantiated for a type
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- `T` to which the indicated operator can be applied and for which the
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- indicated operator returns a value which is of type `T` or which can be
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- unambiguously implicitly converted to type `T`. The argument arrays have
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- the same length.
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  *Returns:* A `valarray` whose length is equal to the lengths of the
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  argument arrays. Each element of the returned array is initialized with
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  the result of applying the indicated operator to the corresponding
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  elements of the argument arrays.
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  ``` cpp
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- template<class T> valarray<T> operator* (const valarray<T>&, const T&);
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- template<class T> valarray<T> operator* (const T&, const valarray<T>&);
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- template<class T> valarray<T> operator/ (const valarray<T>&, const T&);
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- template<class T> valarray<T> operator/ (const T&, const valarray<T>&);
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- template<class T> valarray<T> operator% (const valarray<T>&, const T&);
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- template<class T> valarray<T> operator% (const T&, const valarray<T>&);
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- template<class T> valarray<T> operator+ (const valarray<T>&, const T&);
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- template<class T> valarray<T> operator+ (const T&, const valarray<T>&);
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- template<class T> valarray<T> operator- (const valarray<T>&, const T&);
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- template<class T> valarray<T> operator- (const T&, const valarray<T>&);
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- template<class T> valarray<T> operator^ (const valarray<T>&, const T&);
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- template<class T> valarray<T> operator^ (const T&, const valarray<T>&);
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- template<class T> valarray<T> operator& (const valarray<T>&, const T&);
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- template<class T> valarray<T> operator& (const T&, const valarray<T>&);
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- template<class T> valarray<T> operator| (const valarray<T>&, const T&);
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- template<class T> valarray<T> operator| (const T&, const valarray<T>&);
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- template<class T> valarray<T> operator<<(const valarray<T>&, const T&);
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- template<class T> valarray<T> operator<<(const T&, const valarray<T>&);
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- template<class T> valarray<T> operator>>(const valarray<T>&, const T&);
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- template<class T> valarray<T> operator>>(const T&, const valarray<T>&);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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  ```
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- *Requires:* Each of these operators may only be instantiated for a type
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- `T` to which the indicated operator can be applied and for which the
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- indicated operator returns a value which is of type `T` or which can be
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- unambiguously implicitly converted to type `T`.
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  *Returns:* A `valarray` whose length is equal to the length of the array
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  argument. Each element of the returned array is initialized with the
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  result of applying the indicated operator to the corresponding element
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  of the array argument and the non-array argument.
 
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+ #### Binary operators <a id="valarray.binary">[[valarray.binary]]</a>
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  ``` cpp
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+ template<class T> valarray<T> operator* (const valarray<T>&, const valarray<T>&);
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+ template<class T> valarray<T> operator/ (const valarray<T>&, const valarray<T>&);
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+ template<class T> valarray<T> operator% (const valarray<T>&, const valarray<T>&);
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+ template<class T> valarray<T> operator+ (const valarray<T>&, const valarray<T>&);
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+ template<class T> valarray<T> operator- (const valarray<T>&, const valarray<T>&);
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+ template<class T> valarray<T> operator^ (const valarray<T>&, const valarray<T>&);
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+ template<class T> valarray<T> operator& (const valarray<T>&, const valarray<T>&);
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+ template<class T> valarray<T> operator| (const valarray<T>&, const valarray<T>&);
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+ template<class T> valarray<T> operator<<(const valarray<T>&, const valarray<T>&);
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+ template<class T> valarray<T> operator>>(const valarray<T>&, const valarray<T>&);
 
 
 
 
 
 
 
 
 
 
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  ```
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+ *Mandates:* The indicated operator can be applied to operands of type
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+ `T` and returns a value of type `T` or which can be unambiguously
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+ implicitly converted to `T`.
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+
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+ *Preconditions:* The argument arrays have the same length.
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  *Returns:* A `valarray` whose length is equal to the lengths of the
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  argument arrays. Each element of the returned array is initialized with
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  the result of applying the indicated operator to the corresponding
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  elements of the argument arrays.
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  ``` cpp
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+ template<class T> valarray<T> operator* (const valarray<T>&,
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+ const typename valarray<T>::value_type&);
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+ template<class T> valarray<T> operator* (const typename valarray<T>::value_type&,
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+ const valarray<T>&);
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+ template<class T> valarray<T> operator/ (const valarray<T>&,
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+ const typename valarray<T>::value_type&);
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+ template<class T> valarray<T> operator/ (const typename valarray<T>::value_type&,
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+ const valarray<T>&);
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+ template<class T> valarray<T> operator% (const valarray<T>&,
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+ const typename valarray<T>::value_type&);
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+ template<class T> valarray<T> operator% (const typename valarray<T>::value_type&,
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+ const valarray<T>&);
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+ template<class T> valarray<T> operator+ (const valarray<T>&,
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+ const typename valarray<T>::value_type&);
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+ template<class T> valarray<T> operator+ (const typename valarray<T>::value_type&,
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+ const valarray<T>&);
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+ template<class T> valarray<T> operator- (const valarray<T>&,
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+ const typename valarray<T>::value_type&);
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+ template<class T> valarray<T> operator- (const typename valarray<T>::value_type&,
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+ const valarray<T>&);
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+ template<class T> valarray<T> operator^ (const valarray<T>&,
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+ const typename valarray<T>::value_type&);
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+ template<class T> valarray<T> operator^ (const typename valarray<T>::value_type&,
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+ const valarray<T>&);
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+ template<class T> valarray<T> operator& (const valarray<T>&,
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+ const typename valarray<T>::value_type&);
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+ template<class T> valarray<T> operator& (const typename valarray<T>::value_type&,
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+ const valarray<T>&);
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+ template<class T> valarray<T> operator| (const valarray<T>&,
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+ const typename valarray<T>::value_type&);
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+ template<class T> valarray<T> operator| (const typename valarray<T>::value_type&,
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+ const valarray<T>&);
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+ template<class T> valarray<T> operator<<(const valarray<T>&,
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+ const typename valarray<T>::value_type&);
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+ template<class T> valarray<T> operator<<(const typename valarray<T>::value_type&,
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+ const valarray<T>&);
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+ template<class T> valarray<T> operator>>(const valarray<T>&,
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+ const typename valarray<T>::value_type&);
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+ template<class T> valarray<T> operator>>(const typename valarray<T>::value_type&,
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+ const valarray<T>&);
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  ```
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+ *Mandates:* The indicated operator can be applied to operands of type
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+ `T` and returns a value of type `T` or which can be unambiguously
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+ implicitly converted to `T`.
 
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  *Returns:* A `valarray` whose length is equal to the length of the array
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  argument. Each element of the returned array is initialized with the
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  result of applying the indicated operator to the corresponding element
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  of the array argument and the non-array argument.