SWAB(3TIFF)                                                        SWAB(3TIFF)



NAME
       TIFFGetBitRevTable, TIFFReverseBits, TIFFSwabShort, TIFFSwabLong,
       TIFFSwabArrayOfShort, TIFFSwabArrayOfLong - byte- and bit-swapping
       routines

SYNOPSIS
       #include <tiffio.h>

       const unsigned char* TIFFGetBitRevTable(int reversed)
       void TIFFReverseBits(u_char *data, unsigned long nbytes)
       void TIFFSwabShort(uint16 *data)
       void TIFFSwabLong(uint32 *data)
       void TIFFSwabArrayOfShort(uint16 *data, unsigned long nshorts)
       void TIFFSwabArrayOfLong(uint32 *data, unsigned long nlongs)

DESCRIPTION
       The following routines are used by the library to swap 16- and 32-bit
       data and to reverse the order of bits in bytes.

       TIFFSwabShort and TIFFSwabLong swap the bytes in a single 16-bit and
       32-bit item, respectively.  TIFFSwabArrayOfShort and
       TIFFSwabArrayOfLong swap the bytes in an array of 16-bit and 32-bit
       items, respectively.

       TIFFReverseBits replaces each byte in data with the equivalent bit-
       reversed value. This operation is performed with a lookup table, which
       is returned using the TIFFGetBitRevTable function.  reversed parameter
       specifies which table should be returned. Supply 1 if you want bit
       reversal table. Supply 0 to get the table that do not reverse bit
       values. It is a lookup table that can be used as an identity function;
       i.e.  TIFFNoBitRevTable[n] == n.

DIAGNOSTICS
       None.

SEE ALSO
       libtiff(3TIFF)

       Libtiff library home page: http://www.remotesensing.org/libtiff/



libtiff                        November 04, 2004                   SWAB(3TIFF)
