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<h1 align=center>SWAB</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#DIAGNOSTICS">DIAGNOSTICS</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
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<a name="NAME"></a>
<h2>NAME</h2>
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<p>TIFFGetBitRevTable, TIFFReverseBits, TIFFSwabShort,
TIFFSwabLong, TIFFSwabArrayOfShort, TIFFSwabArrayOfLong
− byte- and bit-swapping routines</p>
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<h2>SYNOPSIS</h2>
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<p><b>#include <tiffio.h></b></p>
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<p><b>const unsigned char* TIFFGetBitRevTable(int</b>
<i>reversed</i><b>)<br>
void TIFFReverseBits(u_char *</b><i>data</i><b>, unsigned
long</b> <i>nbytes</i><b>)<br>
void TIFFSwabShort(uint16 *</b><i>data</i><b>)<br>
void TIFFSwabLong(uint32 *</b><i>data</i><b>)<br>
void TIFFSwabArrayOfShort(uint16 *</b><i>data</i><b>,
unsigned long</b> <i>nshorts</i><b>)<br>
void TIFFSwabArrayOfLong(uint32 *</b><i>data</i><b>,
unsigned long</b> <i>nlongs</i><b>)</b></p>
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<h2>DESCRIPTION</h2>
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<p>The following routines are used by the library to swap
16- and 32-bit data and to reverse the order of bits in
bytes.</p>
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<p><i>TIFFSwabShort</i> and <i>TIFFSwabLong</i> swap the
bytes in a single 16-bit and 32-bit item, respectively.
<i>TIFFSwabArrayOfShort</i> and <i>TIFFSwabArrayOfLong</i>
swap the bytes in an array of 16-bit and 32-bit items,
respectively.</p>
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<p><i>TIFFReverseBits</i> replaces each byte in <i>data</i>
with the equivalent bit-reversed value. This operation is
performed with a lookup table, which is returned using the
<i>TIFFGetBitRevTable</i> function. <i>reversed</i>
parameter specifies which table should be returned. Supply
<i>1</i> if you want bit reversal table. Supply <i>0</i> to
get the table that do not reverse bit values. It is a lookup
table that can be used as an <i>identity function</i>; i.e.
<i>TIFFNoBitRevTable[n] == n</i>.</p>
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<h2>DIAGNOSTICS</h2>
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<p>None.</p>
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<h2>SEE ALSO</h2>
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<p><b>libtiff</b>(3TIFF)</p>
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<p>Libtiff library home page:
<b>http://www.remotesensing.org/libtiff/</b></p>
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