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guignot wrote:<br>
<blockquote cite="mid200407171153.14181.guignot@wanadoo.fr" type="cite">
<pre wrap="">Le Samedi 17 Juillet 2004 12:03, Campbell Barton a écrit :
</pre>
<blockquote type="cite">
<pre wrap="">Hi, The method is as follows in C
length = sqrt(pow((v2[0] - v1[0]),2) + pow((v2[1] - v1[1]),2) +
pow((v2[2] - v1[2]),2) );
</pre>
</blockquote>
<pre wrap=""><!---->
Try to avoid pow(x,2), it is too long.
x*x is much faster!
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<br>
x=2.0<br>
n=2.0<br>
x**n<br>
<br>
for pow(x,n)<br>
and:<br>
<br>
x=2.0<br>
n=0.5<br>
x**n<br>
<br>
for sqrt(2.0) <br>
<br>
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