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14<h1 align="left">FX_InvSqrt <img src="../image/NTR.gif"align="middle"><img src="../image/TWL.gif" align="middle"></H1>
15<H2>Syntax</H2>
16
17<dl>
18  <dd>
19<PRE><CODE>#include &lt;nitro/fx/fx_cp.h&gt;
20
21fx32 FX_InvSqrt(fx32 x);</CODE></PRE>
22  </dd>
23</dl><h2>Arguments</h2>
24
25<table border="1" width="100%">
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27    <tr>
28      <TD width="109"><em><strong><font face="Courier New">x</font></strong></em></TD>
29      <TD width="593"><code><A href="fx32.html">fx32</A></code>-format fixed-point decimal.</TD>
30    </tr>
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32<h2>Return Values</h2>
33<p>Reciprocal of the square root of <em><strong><code>x</code></strong></em>.</p>
34<H2>Description</H2>
35<P>This function calculates the reciprocal of an <CODE><A href="fx32.html">fx32</A></CODE>-format  square root. The result is returned as an <CODE><A href="fx32.html">fx32</A></CODE> type. The Divider and Square Root Calculator are used internally. Refer to <A href="../cp/div/about_div.html#use_in_intr">Divider Usage Notes</A> when using this function inside an interrupt.</P>
36
37<h2>See Also</h2>
38<P><code><A href="FX_Sqrt.html">FX_Sqrt</A>, <A href="FX_Inv.html">FX_Inv</A></code></P>
39<H2>Revision History</H2>
40<P>2004/01/19 Initial version.</P>
41<hr><p>CONFIDENTIAL</p></body>
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