47 lines
3.9 KiB
HTML
47 lines
3.9 KiB
HTML
|
<!-- Common Lisp HyperSpec (TM), version 7.0 generated by Kent M. Pitman on Mon, 11-Apr-2005 2:31am EDT -->
|
||
|
|
<HTML>
|
||
|
|
<HEAD>
|
||
|
|
<TITLE>CLHS: Section 2.3.1.1.2</TITLE>
|
||
|
|
<LINK HREF="../Data/clhs.css" REL="stylesheet" TYPE="text/css" />
|
||
|
|
<META HTTP-EQUIV="Author" CONTENT="Kent M. Pitman">
|
||
|
|
<META HTTP-EQUIV="Organization" CONTENT="LispWorks Ltd.">
|
||
|
|
<LINK REL=TOP HREF="../Front/index.htm">
|
||
|
|
<LINK REL=COPYRIGHT HREF="../Front/Help.htm#Legal">
|
||
|
|
<LINK REL=DISCLAIMER HREF="../Front/Help.htm#Disclaimer">
|
||
|
|
<LINK REL=PREV HREF="02_caaa.htm">
|
||
|
|
<LINK REL=UP HREF="02_caa.htm">
|
||
|
|
<LINK REL=NEXT HREF="02_cb.htm">
|
||
|
|
</HEAD>
|
||
|
|
<BODY>
|
||
|
|
<H1><A REV=MADE HREF="http://www.lispworks.com/"><IMG WIDTH=80 HEIGHT=65 ALT="[LISPWORKS]" SRC="../Graphics/LWSmall.gif" ALIGN=Bottom></A><A REL=TOP HREF="../Front/index.htm"><IMG WIDTH=237 HEIGHT=65 ALT="[Common Lisp HyperSpec (TM)]" SRC="../Graphics/CLHS_Sm.gif" ALIGN=Bottom></A> <A REL=PREV HREF="02_caaa.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="02_caa.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="02_cb.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
|
||
|
|
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<H2>
|
||
|
|
2.3.1.1.2 Examples of Potential Numbers</H2> <P>
|
||
|
|
As examples, the <A REL=DEFINITION HREF="26_glo_t.htm#token"><I>tokens</I></A> in the next figure are <A REL=DEFINITION HREF="26_glo_p.htm#potential_number"><I>potential numbers</I></A>, but they are not actually numbers, and so are reserved <A REL=DEFINITION HREF="26_glo_t.htm#token"><I>tokens</I></A>; a <A REL=DEFINITION HREF="26_glo_c.htm#conforming_implementation"><I>conforming implementation</I></A> is permitted, but not required, to define their meaning. <P>
|
||
|
|
<PRE>
|
||
|
|
1b5000 777777q 1.7J -3/4+6.7J 12/25/83
|
||
|
|
27^19 3^4/5 6//7 3.1.2.6 ^-43^
|
||
|
|
3.141_592_653_589_793_238_4 -3.7+2.6i-6.17j+19.6k
|
||
|
|
</PRE>
|
||
|
|
<P><B>Figure 2-10. Examples of reserved tokens</B> <P>
|
||
|
|
The <A REL=DEFINITION HREF="26_glo_t.htm#token"><I>tokens</I></A> in the next figure are not <A REL=DEFINITION HREF="26_glo_p.htm#potential_number"><I>potential numbers</I></A>; they are always treated as <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbols</I></A>: <P>
|
||
|
|
<PRE>
|
||
|
|
/ /5 + 1+ 1-
|
||
|
|
foo+ ab.cd _ ^ ^/-
|
||
|
|
</PRE>
|
||
|
|
<P><B>Figure 2-11. Examples of symbols</B> <P>
|
||
|
|
The <A REL=DEFINITION HREF="26_glo_t.htm#token"><I>tokens</I></A> in the next figure are <A REL=DEFINITION HREF="26_glo_p.htm#potential_number"><I>potential numbers</I></A> if the <A REL=DEFINITION HREF="26_glo_c.htm#current_input_base"><I>current input base</I></A> is <TT>16</TT>, but they are always treated as <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbols</I></A> if the <A REL=DEFINITION HREF="26_glo_c.htm#current_input_base"><I>current input base</I></A> is <TT>10</TT>. <P>
|
||
|
|
<PRE>
|
||
|
|
bad-face 25-dec-83 a/b fad_cafe f^
|
||
|
|
</PRE>
|
||
|
|
<P><B>Figure 2-12. Examples of symbols or potential numbers</B> <P>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A REL=NAVIGATOR HREF="../Front/StartPts.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Starting Points]" SRC="../Graphics/StartPts.gif" ALIGN=Bottom></A><A REL=TOC HREF="../Front/Contents.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Contents]" SRC="../Graphics/Contents.gif" ALIGN=Bottom></A><A REL=INDEX HREF="../Front/X_Master.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Index]" SRC="../Graphics/Index.gif" ALIGN=Bottom></A><A REL=INDEX HREF="../Front/X_Symbol.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Symbols]" SRC="../Graphics/Symbols.gif" ALIGN=Bottom></A><A REL=GLOSSARY HREF="../Body/26_a.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Glossary]" SRC="../Graphics/Glossary.gif" ALIGN=Bottom></A><A HREF="../Front/X3J13Iss.htm"><IMG WIDTH=80 HEIGHT=40 ALT="[Issues]" SRC="../Graphics/Issues.gif" ALIGN=Bottom></A><BR>
|
||
|
|
|
||
|
|
<A REL=COPYRIGHT HREF="../Front/Help.htm#Legal"><I>Copyright 1996-2005, LispWorks Ltd. All rights reserved.</I></A><P>
|
||
|
|
</BODY>
|
||
|
|
</HTML>
|