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<title>EAGLE Help: Real Constants</title>
</head>
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<i>EAGLE Help</i>
<h1><center>Real Constants</center></h1>
<hr>
A <i>real constant</i> follows the general pattern
<pre>
[-]<i>int</i>.<i>frac</i>[e|E[±]<i>exp</i>]
</pre>
which stands for
<ul>
<li>optional sign
<li>decimal integer
<li>decimal point
<li>decimal fraction
<li><tt>e</tt> or <tt>E</tt> and a signed integer exponent
</ul>
You can omit either the decimal integer or the decimal fraction
(but not both). You can omit either the decimal point or the
letter <tt>e</tt> or <tt>E</tt> and the signed integer exponent
(but not both).
<p>
The type of an real constant is
<tt><a href=157.htm>real</a></tt>.
<p>
<b>Examples</b>
<p>
<table>
<tr><td valign=top><font face=Helvetica,Arial>Constant </font></td><td valign=top><font face=Helvetica,Arial>Value</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>23.45e6</tt> </font></td><td valign=top><font face=Helvetica,Arial>23.45 x 10^6</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>.0</tt> </font></td><td valign=top><font face=Helvetica,Arial>0.0</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>0.</tt> </font></td><td valign=top><font face=Helvetica,Arial>0.0</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>1.</tt> </font></td><td valign=top><font face=Helvetica,Arial>1.0</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>-1.23</tt> </font></td><td valign=top><font face=Helvetica,Arial>-1.23</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>2e-5</tt> </font></td><td valign=top><font face=Helvetica,Arial>2.0 x 10^-5</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>3E+10</tt> </font></td><td valign=top><font face=Helvetica,Arial>3.0 x 10^10</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>.09E34</tt> </font></td><td valign=top><font face=Helvetica,Arial>0.09 x 10^34</font></td></tr>
</table>
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<a href=index.htm>Index</a>
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<i>Copyright © 2005 CadSoft Computer GmbH</i>
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