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<HTML>
<HEAD>
<TITLE>EXPAND</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF" fgcolor="#000000">
<P><A NAME="expandfunction"></A>
<font size="+3" color="green"><B>EXPAND</B></font></P>
<P>
<TABLE border="1" cols="2" frame="box" rules="all" width="572">
<TR>
<TD width="15%" valign="top"><B>Syntax</B>:</TD>
<TD width="85%"><CODE>
string = EXPAND(string)</CODE>
</TD></TR>
</table></p>
<p>
The <CODE>EXPAND</CODE> function accepts a string as argument.
The result is also a character string. It parses the argument, expanding any expression
variables it finds. If an expression variable, contained in the argument, also contains
expression variables then they are also expanded, and so on until all such expression
variables have been expanded. Syntax checking is done during the expansion.</p>
<p>
<font size="+1" color="green">Example</font></p>
<p>
<font color="blue"><pre>
A=2 ! define a scalar A
B=3 ! define a scalar B
FC1='(A+B)/A' ! define a string variable FC1
FC2='SQRT(A/B)' ! define a string variable FC2
FC3='FC1*FC2' ! define a string variable FC3
FC4='FC3+4*FC2' ! define a string variable FC4
=FC4 ! displays 'FC3+4*FC2'
=EXPAND(FC4) ! displays '(((A+B)/A)*(SQRT(A/B)))+4*(SQRT(A/B))'
=EVALUATE(FC4) ! displays 5.3073
</pre></font></p>
<p>
<a href="eval.htm"><img border="0" src="../../shadow_left.gif">
<font size="+1" color="olive">EVALUATE</font></a><br />
<a href="canopen.htm"><img border="0" src="../../shadow_right.gif">
<font size="+1" color="olive">CANOPEN</font></a>
</P>
</BODY>
</HTML>
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