xgboost::common::CompressedBufferWriter Class Reference

Writes bit compressed symbols to a memory buffer. More...

#include <compressed_iterator.h>

Public Member Functions
XGBOOST_DEVICE	CompressedBufferWriter (size_t num_symbols)
template<typename T >
void	WriteSymbol (CompressedByteT *buffer, T symbol, size_t offset)
template<typename IterT >
void	Write (CompressedByteT *buffer, IterT input_begin, IterT input_end)

Static Public Member Functions
static size_t	CalculateBufferSize (size_t num_elements, size_t num_symbols)
	Calculates number of bytes required for a given number of elements and a symbol range.

Detailed Description

Writes bit compressed symbols to a memory buffer.

Use CompressedIterator to read symbols back from buffer. Currently limited to a maximum symbol size of 28 bits.

Author

Rory

Date

7/9/2017

Member Function Documentation

CalculateBufferSize()

static size_t xgboost::common::CompressedBufferWriter::CalculateBufferSize ( size_t  num_elements, size_t  num_symbols  )

inlinestatic

Calculates number of bytes required for a given number of elements and a symbol range.

Author

Rory

Date

7/9/2017

Parameters

num_elements	Number of elements.
num_symbols	Max number of symbols (alphabet size)

Returns

The calculated buffer size.

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

• External/xgboost/src/common/compressed_iterator.h