File r37/lisp/csl/html/r37_0122.html artifact 779a2d9518 part of check-in a57e59ec0d

<A NAME=TRUE>

<TITLE>TRUE</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>TRUE</B><P>
<P>
 
<P>
<P>
Any value of the boolean part of a logical expression which is neither 

<A HREF=r37_0014.html>nil</A> nor <em>0</em> is considered as <em>true</em>. Mos
t 
builtin test and compare functions return 
<A HREF=r37_0018.html>t</A> for <em>true</em> 
and 
<A HREF=r37_0014.html>nil</A> for <em>false</em>. 
<P>
<P>
 <P> <H3> 
examples: </H3>
<P><PRE><TT>
if member(3,{1,2,3}) then 1 else -1;


  1


if floor(1.7) then 1 else -1; 

  1 


if floor(0.7) then 1 else -1; 

  -1

</TT></PRE><P>