gslice Class Reference

Inheritance diagram for gslice:

Public Member Functions
	gslice ()
	gslice (size_t _Off, const _Sizarray &_Lenarr, const _Sizarray &_Incarr)
size_t	start () const
_Sizarray	size () const
_Sizarray	stride () const
size_t	_Nslice () const
size_t	_Off (_Sizarray &_Indexarr) const
size_t	_Totlen () const

Private Attributes
size_t	_Start
_Sizarray	_Len
_Sizarray	_Stride

Constructor & Destructor Documentation

gslice::gslice ( )

inline

        : _Start(0)
        {   // construct with all zeros
        }

gslice::gslice ( size_t  _Off, const _Sizarray &  _Lenarr, const _Sizarray &  _Incarr  )

inline

        : _Start(_Off), _Len(_Lenarr), _Stride(_Incarr)
        {   // construct from starting offset, arrays of lengths and strides
        }

Member Function Documentation

size_t gslice::_Nslice ( ) const

inline

        {   // return number of slices
        return (_Len.size());
        }

size_t gslice::_Off ( _Sizarray &  _Indexarr ) const

inline

        {   // return offset for an array of indexes, then increment
        size_t _Idx, _Ans = _Start;

        for (_Idx = 0; _Idx < _Indexarr.size(); ++_Idx)
            _Ans += _Indexarr[_Idx] * _Stride[_Idx];    // compute offset

        while (0 < _Idx--)
            if (++_Indexarr[_Idx] < _Len[_Idx])
                break;  // increment done, quit
            else
                _Indexarr[_Idx] = 0;    // carry to more-significant index
        return (_Ans);
        }

size_t gslice::_Totlen ( ) const

inline

        {   // return total length of generalized slice
        if (_Len.size() == 0)
            return (0);

        size_t _Count = _Len[0];
        for (size_t _Idx = 0; ++_Idx < _Len.size(); )
            _Count *= _Len[_Idx];
        return (_Count);
        }

_Sizarray gslice::size ( ) const

inline

        {   // return array of lengths of slices
        return (_Len);
        }

size_t gslice::start ( ) const

inline

        {   // return starting offset of generalized slice
        return (_Start);
        }

_Sizarray gslice::stride ( ) const

inline

        {   // return array of strides of slices
        return (_Stride);
        }

Member Data Documentation

_Sizarray gslice::_Len

private

size_t gslice::_Start

private

_Sizarray gslice::_Stride

private

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The documentation for this class was generated from the following file:

• VS2013/inc/valarray