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8<TITLE>VECCrossProduct</TITLE>
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11<H1 align="left">VECCrossProduct</H1>
12<H2 align="left">C Specification</H2>
13<BLOCKQUOTE><CODE><CODE>#include &lt;revolution/mtx.h&gt;</CODE></CODE></BLOCKQUOTE>
14<BLOCKQUOTE><CODE><CODE>void C_VECCrossProduct ( const Vec* <EM>a</EM>, const Vec* <EM>b</EM>, Vec* <EM>axb</EM> );<BR> void PSVECCrossProduct ( const Vec* <EM>a</EM>, const Vec* <EM>b</EM>, Vec* <EM>axb</EM> );<BR> <BR> #define VECCrossProduct&nbsp; C_VECCrossProduct // for debug build<BR> #define VECCrossProduct&nbsp; PSVECCrossProduct // for nondebug build</CODE></CODE></BLOCKQUOTE>
15<H2 align="left">Arguments</H2>
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20<TD width="120" valign="top" align="left" bgcolor="#ffffe8"><CODE><STRONG><EM>a</EM></STRONG></CODE></TD>
21<TD width="520">Pointer to first <CODE><A href="../structures/Vec_VecPtr.html">Vec</A></CODE> for cross product calculation.</TD>
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24<TD width="120" valign="top" align="left" bgcolor="#ffffe8"><CODE><STRONG><EM><em><strong><code>b</code></strong></em>&nbsp;&nbsp;</EM></STRONG></CODE></TD>
25<TD width="520">Pointer to second <CODE><A href="../structures/Vec_VecPtr.html">Vec</A></CODE> for cross product calculation.</TD>
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27    <TR>
28<TD width="120" valign="top" align="left" bgcolor="#ffffe8"><CODE><STRONG><EM>axb</EM></STRONG></CODE></TD>
29<TD width="520">Pointer to resultant <A href="../structures/Vec_VecPtr.html"><CODE>Vec</CODE></A> ( <code><em><strong>a</strong></em></code> x <code><em><strong>b</strong></em></code> ). Acceptable if <code><em><strong>axb</strong></em> = <em><strong>a</strong></em></code> or <code><em><strong>axb</strong></em> = <em><strong>b</strong></em></code>.</TD>
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34<H2 align="left">Return Values</H2>
35<P align="left">None.</P>
36<H2 align="left">Description</H2>
37<P align="left">Computes the cross product of two vectors ( <code><em><strong>a</strong></em> x <em><strong>b</strong></em></code> ) and places the result in <code><em><strong>axb</strong></em></code>. When using this function, note that the order in which vectors are passed as arguments determines the orientation of the orthogonal vector: ( v1 x v2 ) = -( v2 x v1 ).</P>
38<P>During a debug build, <code>VECCrossProduct</code> is interpreted as <code>C_VECCrossProduct</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>PSVECCrossProduct</code>, will be automatically substituted. You can also call <code>C_VECCrossProduct</CODE> or <CODE>PSVECCrossProduct</code> explicitly.</P>
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41<H2 align="left">See Also</H2>
42<P align="left"><A href="../structures/Vec_VecPtr.html"><CODE>Vec, VecPtr, </CODE></A></P>
43<P align="left"><A href="VECDotProduct.html"><CODE>VECDotProduct</CODE></A></P>
44<H2>Revision History</H2>
45<P>2006/03/01 Initial version.</P>
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47<P>CONFIDENTIAL</p>
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