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source/pack.c File Reference

Packing and unpacking routines. More...

#include <pack.h>
#include <appconfig.h>

Go to the source code of this file.

Functions
void	PackBits (void *src, void *dest, UInt8 nbits, UInt32 count)
	pack from src->dest count of the nbits-lowest order bits
void	UnpackBits (void *src, void *dest, UInt8 nbits, UInt32 count)
	unpack from src->dest the number of bits into the count specified

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Detailed Description

Packing and unpacking routines.

pack and unpack bit field arrays.

Definition in file pack.c.

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Define Documentation

#define ANDUPTO (  X    )

Value: ((1<<((X)-1)) | (1<<((X)-2)) | (1<<((X)-3)) | (1<<((X)-4)) | \ (1<<((X)-5)) | (1<<((X)-6)) | (1<<((X)-7)) | (1<<((X)-8))) Definition at line 10 of file pack.c.

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Function Documentation

void PackBits (  void *    src, void *    dest, UInt8    nbits, UInt32    count )

pack from src->dest count of the nbits-lowest order bits Parameters: src  source memory dest  destination memory nbits  number of bits to pack count  count of entries to pack Definition at line 23 of file pack.c. References UInt32, and UInt8. Referenced by WriteCityRecord().

void UnpackBits (  void *    src, void *    dest, UInt8    nbits, UInt32    count )

unpack from src->dest the number of bits into the count specified Parameters: src  source memory to unpack from dest  dest memory to unpack into nbits  number of bits in this element count  number of elements Process: shift the current value right by offset bits and and with the mask This works providing we have more bits left in the field than bits we want to shift by. Definition at line 63 of file pack.c. References UInt32, and UInt8. Referenced by ReadCityRecord().

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