macro/command/checksum8.html

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<h1>checksum8, checksum8file</h1>

<p>
Calculates the 8bit-checksum of a string or a file. <em>(version 4.78 or later)</em>
</p>

<pre class="macro-syntax">
checksum8 &lt;intvar&gt; &lt;string&gt;
checksum8file &lt;intvar&gt; &lt;filename&gt;
</pre>

<h2>Remarks</h2>

<p>
This macro function calculates the checksum(8bit) of a string or a file. 
<br><br>

The calculated value stores the variable "intvar" as mathematical value.<br>
If the &lt;filename&gt; file can not open by using checksum8file, the system variable "result" is set to -1.
</p>

<h2>Example</h2>

<pre class="macro-example">
str = 'this is a test string to be checksum8ed'
checksum8 crc str

; Display checksum8 result asHEX
sprintf '0x%08X' crc
messagebox inputstr 'checksum8 = '

checksum8file crc 'foo.bin'
if result = -1 then
    messagebox 'file open error' 'checksum8 = '
else
    sprintf '0x%08X' crc
    messagebox inputstr 'checksum8 = '
endif
</pre>

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