std::mask_array< _Tp >(3)  Library Functions Manual  std::mask_array< _Tp >(3)

NAME
       std::mask_array< _Tp > - Reference to selected subset of an array.


SYNOPSIS
       #include <valarray>

   Public Types
       typedef _Tp value_type

   Public Member Functions
       mask_array (const mask_array &)
           Copy constructor. Both slices refer to the same underlying array.
       template<class _Dom > void operator%= (const _Expr< _Dom, _Tp > &)
           const
       void operator%= (const valarray< _Tp > &) const
           Modulo slice elements by corresponding elements of v.
       template<class _Dom > void operator&= (const _Expr< _Dom, _Tp > &)
           const
       void operator&= (const valarray< _Tp > &) const
           Logical and slice elements with corresponding elements of v.
       template<class _Dom > void operator*= (const _Expr< _Dom, _Tp > &)
           const
       void operator*= (const valarray< _Tp > &) const
           Multiply slice elements by corresponding elements of v.
       template<class _Dom > void operator+= (const _Expr< _Dom, _Tp > &)
           const
       void operator+= (const valarray< _Tp > &) const
           Add corresponding elements of v to slice elements.
       template<class _Dom > void operator-= (const _Expr< _Dom, _Tp > &)
           const
       void operator-= (const valarray< _Tp > &) const
           Subtract corresponding elements of v from slice elements.
       template<class _Dom > void operator/= (const _Expr< _Dom, _Tp > &)
           const
       void operator/= (const valarray< _Tp > &) const
           Divide slice elements by corresponding elements of v.
       template<class _Dom > void operator<<= (const _Expr< _Dom, _Tp > &)
           const
       void operator<<= (const valarray< _Tp > &) const
           Left shift slice elements by corresponding elements of v.
       template<class _Dom > void operator= (const _Expr< _Dom, _Tp > &) const
       template<class _Ex > void operator= (const _Expr< _Ex, _Tp > &__e)
           const
       void operator= (const _Tp &) const
           Assign all slice elements to t.
       mask_array & operator= (const mask_array &)
           Assignment operator. Assigns elements to corresponding elements of
           a.
       void operator= (const valarray< _Tp > &) const
       template<class _Dom > void operator>>= (const _Expr< _Dom, _Tp > &)
           const
       void operator>>= (const valarray< _Tp > &) const
           Right shift slice elements by corresponding elements of v.
       template<class _Dom > void operator^= (const _Expr< _Dom, _Tp > &)
           const
       void operator^= (const valarray< _Tp > &) const
           Logical xor slice elements with corresponding elements of v.
       template<class _Dom > void operator|= (const _Expr< _Dom, _Tp > &)
           const
       void operator|= (const valarray< _Tp > &) const
           Logical or slice elements with corresponding elements of v.

   Friends
       class valarray< _Tp >

Detailed Description
   template<class _Tp>
       class std::mask_array< _Tp >"Reference to selected subset of an array.

       A mask_array is a reference to the actual elements of an array
       specified by a bitmask in the form of an array of bool. The way to get
       a mask_array is to call operator[](valarray<bool>) on a valarray. The
       returned mask_array then permits carrying operations out on the
       referenced subset of elements in the original valarray.

       For example, if a mask_array is obtained using the array (false, true,
       false, true) as an argument, the mask array has two elements referring
       to array[1] and array[3] in the underlying array.

       Parameters
           Tp Element type.

Member Function Documentation
   template<class _Tp > void std::mask_array< _Tp >::operator%= (const
       valarray< _Tp > &) const
       Modulo slice elements by corresponding elements of v.

   template<class _Tp > void std::mask_array< _Tp >::operator&= (const
       valarray< _Tp > &) const
       Logical and slice elements with corresponding elements of v.

   template<class _Tp > void std::mask_array< _Tp >::operator*= (const
       valarray< _Tp > &) const
       Multiply slice elements by corresponding elements of v.

   template<class _Tp > void std::mask_array< _Tp >::operator+= (const
       valarray< _Tp > &) const
       Add corresponding elements of v to slice elements.

   template<class _Tp > void std::mask_array< _Tp >::operator-= (const
       valarray< _Tp > &) const
       Subtract corresponding elements of v from slice elements.

   template<class _Tp > void std::mask_array< _Tp >::operator/= (const
       valarray< _Tp > &) const
       Divide slice elements by corresponding elements of v.

   template<class _Tp > void std::mask_array< _Tp >::operator<<= (const
       valarray< _Tp > &) const
       Left shift slice elements by corresponding elements of v.

   template<class _Tp > void std::mask_array< _Tp >::operator>>= (const
       valarray< _Tp > &) const
       Right shift slice elements by corresponding elements of v.

   template<class _Tp > void std::mask_array< _Tp >::operator^= (const
       valarray< _Tp > &) const
       Logical xor slice elements with corresponding elements of v.

   template<class _Tp > void std::mask_array< _Tp >::operator|= (const
       valarray< _Tp > &) const
       Logical or slice elements with corresponding elements of v.


Author
       Generated automatically by Doxygen for libstdc++ from the source code.

                                   libstdc++         std::mask_array< _Tp >(3)