SWAB(3T)          MISC. REFERENCE MANUAL PAGES           SWAB(3T)

NAME
     TIFFReverseBits,  TIFFSwabShort,  TIFFSwabLong,  TIFFSwabAr-
     rayOfShort,  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 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
     intro(3T),

Sun Release 4.1  Last change: December 16, 1991                 1