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8<TITLE>QUATLogN</TITLE>
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11<H1>QUATLogN</H1>
12
13<H2>Syntax</H2>
14<dl><dd><pre class="construction">
15#include &lt;revolution/mtx.h&gt;
16
17void C_QUATLogN ( const Quaternion* q, Quaternion* r );
18
19#define QUATLogN&nbsp; C_QUATLogN
20</pre></dd></dl>
21
22<H2>Arguments</H2>
23<TABLE class="arguments" border="1" >
24  <TBODY>
25    <TR>
26<TH>q</TH>
27<TD>Pointer to source <a href="../Structures/Quaternion_QuaternionPtr.html"><code>Quaternion</code></a>.</TD>
28    </TR>
29    <TR>
30<TH>r</TH>
31<TD>Pointer to the resulting <A href="../structures/Quaternion_QuaternionPtr.html">Quaternion</A>.&nbsp;Acceptable if <SPAN class="argument">q</SPAN> = <SPAN class="argument">r</SPAN>.</TD>
32    </TR>
33  </TBODY>
34</TABLE>
35
36<H2>Return Values</H2>
37<P>None.</P>
38
39<H2>Description</H2>
40<P>Computes the natural logarithm of a given quaternion <SPAN class="argument">q</SPAN> and places the resultant pure quaternion (w=0) in <SPAN class="argument">r</SPAN>. <code><em><strong>q</strong></em></code> must be a unit quaternion.</P>
41
42<H2>See Also</H2>
43<P class="reference">
44<A href="../structures/Quaternion_QuaternionPtr.html">Quaternion, QuaternionPtr</A>,
45<A href="QUATExp.html">QUATExp</A>
46</P>
47
48<H2>Revision History</H2>
49<P>
502006/03/01 Initial version.<br>
51</P>
52
53<hr><p>CONFIDENTIAL</p></body>
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