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40 lines
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<!-- Common Lisp HyperSpec (TM), version 7.0 generated by Kent M. Pitman on Mon, 11-Apr-2005 2:31am EDT -->
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<TITLE>CLHS: Section 1.5.2.1</TITLE>
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<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="01_eb.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="01_eb.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="01_ebaa.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
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<H2>
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1.5.2.1 Use of Implementation-Defined Language Features</H2> <P>
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Note that <A REL=DEFINITION HREF="26_glo_c.htm#conforming_code"><I>conforming code</I></A> may rely on particular <A REL=DEFINITION HREF="26_glo_i.htm#implementation-defined"><I>implementation-defined</I></A> values or features. Also note that the requirements for <A REL=DEFINITION HREF="26_glo_c.htm#conforming_code"><I>conforming code</I></A> and <A REL=DEFINITION HREF="26_glo_c.htm#conforming_implementation"><I>conforming implementations</I></A> do not require that the results produced by conforming code always be the same when processed by a <A REL=DEFINITION HREF="26_glo_c.htm#conforming_implementation"><I>conforming implementation</I></A>. The results may be the same, or they may differ. <P>
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Conforming code may run in all conforming implementations, but might have allowable <A REL=DEFINITION HREF="26_glo_i.htm#implementation-defined"><I>implementation-defined</I></A> behavior that makes it non-portable code. For example, the following are examples of <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>forms</I></A> that are conforming, but that might return different <A REL=DEFINITION HREF="26_glo_v.htm#value"><I>values</I></A> in different implementations: <P>
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<PRE>
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(evenp most-positive-fixnum) => <A REL=DEFINITION HREF="26_glo_i.htm#implementation-dependent">implementation-dependent</A>
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(random) => <A REL=DEFINITION HREF="26_glo_i.htm#implementation-dependent">implementation-dependent</A>
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(> lambda-parameters-limit 93) => <A REL=DEFINITION HREF="26_glo_i.htm#implementation-dependent">implementation-dependent</A>
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(char-name #\A) => <A REL=DEFINITION HREF="26_glo_i.htm#implementation-dependent">implementation-dependent</A>
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</PRE>
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</TT> <P>
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<A REL=CHILD HREF="01_ebaa.htm"><H2>
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1.5.2.1.1 Use of Read-Time Conditionals</H2></A><P><HR>
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<A REL=COPYRIGHT HREF="../Front/Help.htm#Legal"><I>Copyright 1996-2005, LispWorks Ltd. All rights reserved.</I></A><P>
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