59 lines
3.5 KiB
HTML
59 lines
3.5 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: Function +</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="f_st.htm">
|
||
|
|
<LINK REL=UP HREF="c_number.htm">
|
||
|
|
<LINK REL=NEXT HREF="f__.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="f_st.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="c_number.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="f__.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
|
||
|
|
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="PL"><I>Function</I> <B>+</B></A> <P>
|
||
|
|
<P><B>Syntax:</B><P>
|
||
|
|
<P>
|
||
|
|
|
||
|
|
<B>+</B> <I><TT>&rest</TT> numbers</I> => <I>sum</I><P>
|
||
|
|
<P>
|
||
|
|
<P><B>Arguments and Values:</B><P>
|
||
|
|
<P>
|
||
|
|
<I>number</I>---a <A REL=DEFINITION HREF="26_glo_n.htm#number"><I>number</I></A>. <P>
|
||
|
|
<I>sum</I>---a <A REL=DEFINITION HREF="26_glo_n.htm#number"><I>number</I></A>. <P>
|
||
|
|
<P><B>Description:</B><P>
|
||
|
|
<P>
|
||
|
|
Returns the sum of <I>numbers</I>, performing any necessary type conversions in the process. If no <I>numbers</I> are supplied, <TT>0</TT> is returned. <P>
|
||
|
|
<P><B>Examples:</B><P>
|
||
|
|
|
||
|
|
<PRE>
|
||
|
|
(+) => 0
|
||
|
|
(+ 1) => 1
|
||
|
|
(+ 31/100 69/100) => 1
|
||
|
|
(+ 1/5 0.8) => 1.0
|
||
|
|
</PRE>
|
||
|
|
</TT> <P>
|
||
|
|
<P><B>Affected By:</B> None.
|
||
|
|
<P>
|
||
|
|
<P><B>Exceptional Situations:</B><P>
|
||
|
|
<P>
|
||
|
|
Might signal <A REL=DEFINITION HREF="e_tp_err.htm#type-error"><B>type-error</B></A> if some <A REL=DEFINITION HREF="26_glo_a.htm#argument"><I>argument</I></A> is not a <A REL=DEFINITION HREF="26_glo_n.htm#number"><I>number</I></A>. Might signal <A REL=DEFINITION HREF="e_arithm.htm#arithmetic-error"><B>arithmetic-error</B></A>. <P>
|
||
|
|
<P><B>See Also:</B><P>
|
||
|
|
<P>
|
||
|
|
<A REL=CHILD HREF="12_aa.htm">Section 12.1.1 (Numeric Operations)</A>, <A REL=CHILD HREF="12_ac.htm">Section 12.1.3 (Rational Computations)</A>, <A REL=CHILD HREF="12_ad.htm">Section 12.1.4 (Floating-point Computations)</A>, <A REL=CHILD HREF="12_ae.htm">Section 12.1.5 (Complex Computations)</A> <P>
|
||
|
|
<P><B>Notes:</B> None.
|
||
|
|
<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>
|