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<p>Thank you Samuel</p>
<p>For some reason I get an error message :</p>
<p>--> genlib elementary_functionslib<br>
genlib: Cannot open file ''C:\Program
Files\scilab-6.1.0\modules\elementary_functions\macros\lib''.<br>
ans = F</p>
<p>Although scinotes("lib") opens the file, so it is there.<br>
</p>
<p>Anyway, this works fine:</p>
<p>--> exec bitget.sci;<br>
Warning : redefining function: bitget . Use
funcprot(0) to avoid this message<br>
</p>
<p>Regards</p>
<p>Jan<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 2020-02-28 16:25 PM, Samuel Gougeon
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:f0c63dd2-4a47-0b19-a064-867376316297@free.fr">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<div class="moz-cite-prefix">Hello Jan,</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">You will find <a
moz-do-not-send="true"
href="https://codereview.scilab.org/cat/21421%2C2%2Cscilab/modules/elementary_functions/macros/bitget.sci">=>
there</a> a fixed version of bitget() for big u-int64
integers.<br>
You can patch your Scilab 6.1.0 installation in the following
way:</div>
<div class="moz-cite-prefix">
<ul>
<li>download and unzip the file. rename it bitget.sci</li>
<li>put bitget.sci in the SCI/elementary_functions/macros
directory</li>
<li>Run the following Scilab code in the console:<br>
cd SCI/elementary_functions/macros<br>
predef clear<br>
genlib elementary_functionslib<br>
clear bitget</li>
</ul>
And then test and use bitget in the current session and all
forthcoming ones.<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Regards<br>
Samuel<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Le 27/02/2020 à 16:17, JLan a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:1582816645238-0.post@n3.nabble.com">
<pre class="moz-quote-pre" wrap="">I wonder if i have misunderstood the documentation for bitget, or if this is
a bug? It seems to me that numbers > 2^53 are still not handled correctly.
--> a=uint64(2^61)
a = 2305843009213693952
--> b=uint64(2^61)+1
b = 2305843009213693953
--> bitget(a,1:64)
ans =
column 1 to 32
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0
column 33 to 64
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 1 0 0
--> bitget(b,1:64)
ans =
column 1 to 32
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0
column 33 to 64
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 1 0 0
</pre>
</blockquote>
<br>
<br>
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</pre>
</blockquote>
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