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8<TITLE>QUATSubtract</TITLE>
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11<H1>QUATSubtract</H1>
12
13<H2>Syntax</H2>
14<dl><dd><pre class="construction">
15#include &lt;revolution/mtx.h&gt;
16
17void C_QUATSubtract ( const Quaternion* p, const Quaternion* q, Quaternion* r );
18void PSQUATSubtract ( const Quaternion* p, const Quaternion* q, Quaternion* r );
19
20#define QUATSubtract C_QUATSubtract // for debug build
21#define QUATSubtract PSQUATSubtract // for nondebug build
22</pre></dd></dl>
23
24<H2>Arguments</H2>
25<TABLE class="arguments" border="1" >
26  <TBODY>
27    <TR>
28<TH>p</TH>
29<TD>Pointer to the first <A href="../structures/Quaternion_QuaternionPtr.html">quaternion</A> to subtract.</TD>
30    </TR>
31    <TR>
32<TH>q</TH>
33<TD>Pointer to the second <A href="../structures/Quaternion_QuaternionPtr.html">quaternion</A> to subtract.</TD>
34    </TR>
35    <TR>
36<TH>r</TH>
37<TD>Pointer to the resultant <A href="../structures/Quaternion_QuaternionPtr.html">quaternion</A>.( Contains the result of ( <SPAN class="argument">p</SPAN> - <SPAN class="argument">q</SPAN> ).&nbsp;Acceptable if <SPAN class="argument">r</SPAN> = <SPAN class="argument">p</SPAN> or <SPAN class="argument">r</SPAN> = <SPAN class="argument">q</SPAN>.</TD>
38    </TR>
39  </TBODY>
40</TABLE>
41
42<H2>Return Values</H2>
43<P>None.</P>
44
45<H2>Description</H2>
46<P>Subtracts two quaternions, <em><strong><CODE>p</CODE></strong></em> - <em><strong><CODE>q</CODE></strong></em>, and places the result in <code><em><strong>r</strong></em></code>.</P>
47<P>During a debug build, <code>QUATSubtract</code> is interpreted as <code>C_QUATSubtract</code>, which is a normal C language version. During a non-debug build for a Broadway processor, the paired-singles equivalent of this function, <code>PSQUATSubtract</code>, will be automatically substituted. You can also call each of <code>C_QUATSubtract/PSQUATSubtract</code> explicitly.</P>
48
49<H2>See Also</H2>
50<P class="reference">
51<A href="../structures/Quaternion_QuaternionPtr.html">Quaternion, QuaternionPtr</A>,
52<A href="QUATAdd.html">QUATAdd</A>
53</P>
54
55<H2>Revision History</H2>
56<P>
572006/03/01 Initial version.<br>
58</P>
59
60<hr><p>CONFIDENTIAL</p></body>
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