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%m added

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zimoch
2008-02-22 09:13:11 +00:00
parent 6a0d7b4492
commit 2d513b96d3
2 changed files with 25 additions and 3 deletions
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27
doc/formats.html
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@ -240,6 +240,8 @@ The <code>%b</code> format uses the characters <code>0</code> and
<code>1</code>.
With the <code>%B</code> format, you can choose two other characters
to represent zero and one.
With the <code>#</code> flag, the bit order is changed to <em>little
endian</em>, i.e. least significant bit first.
</p>
<p>
Examples: <code>%B.!</code> or <code>%B\x00\xff</code>.
@ -264,23 +266,28 @@ one character.
<h2>9. Raw LONG Converter (<code>%r</code>)</h2>
<p>
The raw converter does not really "convert".
A signed integer value is written or read in the internal
A signed or unsigned integer value is written or read in the internal
(usually two's complement) representation of the computer.
The normal byte order is <em>big endian</em>, i.e. most significant byte
first.
With the <code>#</code> flag, the byte order is changed to <em>little
endian</em>, i.e. least significant byte first.
With the <code>0</code> flag, the value is unsigned, otherwise signed.
</p>
<p>
In output, the <em>width</em> least significant bytes of the value
are written.
If <em>width</em> is larger than the size of a <code>long</code>,
the value is sign extended.
the value is sign extended or zero extended, depending on the
<code>0</code> flag.
</p>
<p>
In input, <em>width</em> bytes are read and put into the value.
If <em>width</em> is longer than the size of a <code>long</code>, only
If <em>width</em> is larger than the size of a <code>long</code>, only
the least significant bytes are used.
If <em>width</em> is smaller than the size of a <code>long</code>,
the value is sign extended or zero extended, depending on the
<code>0</code> flag.
</p>
<a name="bcd"></a>
@ -451,6 +458,20 @@ the title of an HTML page, skipps anything before the
<code>&lt;title&gt</code> tag and leaves anything after the
<code>&lt;/title&gt;</code> tag in the input buffer.
</p>
<a name="exp"></a>
<h2>13. Exponential DOUBLE converter (<code>%m</code>)</h2>
<p>
This experimental input-only format matches numbers in the format
<i>[sign] mantissa sign exponent<i>, e.g <code>+123-4</code> meaning
123e-4 or 0.0123. Mantissa and exponent are integers. The sign of the
mantissa is optional. Compared to the standard <code>%e</code> format,
this format does not contain the characters <code>.</code> and <code>e</code>.
</p>
<p>
Output formatting is ambigous (e.g. <code>123-4</code> versus
<code>1230-5</code>). Until it has been specified how to handle this,
output is not supported.
</p>
<hr>
<p align="right"><a href="processing.html">Next: Record Processing</a></p>
<p><small>Dirk Zimoch, 2007</small></p>

1
doc/nav.html
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@ -121,6 +121,7 @@ h1 {font-size:120%;
<li><a target="text" href="formats.html#bcd">%D</a></li>
<li><a target="text" href="formats.html#chksum">%&lt;<em>checksum</em>&gt;</a></li>
<li><a target="text" href="formats.html#regex">%/<em>regex</em>/</a></li>
<li><a target="text" href="formats.html#exp">%m</a></li>
</ul>
</div>
<div class="top">