TIFFswab man page on BSDi

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SWAB(3T)						 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.	 TIFFSwabArrayOf-
       Short  and  TIFFSwabArrayOfLong swap the bytes in an array
       of 16-bit and 32-bit items, respectively.

       TIFFReverseBits replaces each byte in data with the equiv-
       alent  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 func-
       tion; i.e.  TIFFNoBitRevTable[n] == n.

DIAGNOSTICS
       None.

SEE ALSO
       libtiff(3T),

			December 16, 1991			1

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