SWAB(3T)          Image Format Library C++ Reference Manual           SWAB(3T)



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

SYNOPSIS
     #include <tiffio.h>
     const unsigned char* TIFFGetBitRevTable(int reversed);
     void TIFFReverseBits(uchar* 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 done with a lookup table,
     TIFFBitRevTable which is declared public.  A second table,
     TIFFNoBitRevTable is also declared public; it is a lookup table that can
     be used as an identity function; i.e.  TIFFNoBitRevTable[n] == n.

DIAGNOSTICS
     None.

SEE ALSO
     libtiff(3T),























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