1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<HTML> 3<HEAD> 4<META http-equiv="Content-Type" content="text/html; charset=windows-1252"> 5<META name="GENERATOR" content="Microsoft FrontPage 5.0"> 6<META http-equiv="Content-Style-Type" content="text/css"> 7<LINK rel="stylesheet" type="text/css" href="../../CSS/revolution.css"> 8<TITLE>VECSquareDistance</TITLE> 9</HEAD> 10<BODY> 11<H1 align="left">VECSquareDistance</H1> 12<H2 align="left">C Specification</H2> 13<BLOCKQUOTE><CODE><CODE>#include <revolution/mtx.h></CODE></CODE></BLOCKQUOTE> 14<BLOCKQUOTE><CODE><CODE>f32 C_VECSquareDistance ( const Vec* <EM>a</EM>, const Vec* <EM>b</EM> );<BR> f32 PSVECSquareDistance ( const Vec* <EM>a</EM>, const Vec* <EM>b</EM> );<BR> <BR> #define VECSquareDistance C_VECSquareDistance // for debug build<BR> #define VECSquareDistance PSVECSquareDistance // for nondebug build</CODE></CODE></BLOCKQUOTE> 15<H2 align="left">Arguments</H2> 16<DIV align="left"> 17<TABLE border="1" cellpadding="3" cellspacing="0.1"> 18 <TBODY> 19 <TR> 20<TD width="120" bgcolor="#ffffe8"><CODE><STRONG><EM>a</EM></STRONG></CODE></TD> 21<TD width="520">Pointer to first <A href="../structures/Vec_VecPtr.html"><CODE>Vec</CODE></A> for squared distance calculation.</TD> 22 </TR> 23 <TR> 24<TD width="120" bgcolor="#ffffe8"><CODE><STRONG><EM><em><strong><code>b</code></strong></em> </EM></STRONG></CODE></TD> 25<TD width="520">Pointer to second <A href="../structures/Vec_VecPtr.html"><CODE>Vec</CODE></A> for squared distance calculation.</TD> 26 </TR> 27 </TBODY> 28</TABLE> 29</DIV> 30<H2 align="left">Return Values</H2> 31<P align="left">The square of the distance between the vectors.</P> 32<H2 align="left">Description</H2> 33<P>Returns the square of the distance between vectors <code><em><strong>a</strong></em></code> and <code><em><strong>b</strong></em></code>. Distance can be calculated using the square root of the returned value.</P> 34<P>During a debug build, <code>VECSquareDistance</code> is interpreted as <code>C_VECSquareDistance</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>PSVECSquareDistance</code>, will be automatically substituted. You can also call each of <code>C_VECSquareDistance/PSVECSquareDistance</code> explicitly.</P> 35 36<P align="left"></P> 37<H2 align="left">See Also</H2> 38<P align="left"><A href="../structures/Vec_VecPtr.html"><CODE>Vec, VecPtr, </CODE></A><A href="VECDistance.html"><CODE>VECDistance</CODE></A></P> 39<H2>Revision History</H2> 40<P>03/01/2006 Initial version.</P> 41</BODY> 42</HTML>