53 lines
1.9 KiB
HTML
53 lines
1.9 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3O//DTD W3 HTML 2.0//EN">
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<!Originally converted to HTML using LaTeX2HTML 95 (Thu Jan 19 1995) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds >
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<HEAD>
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<TITLE> Some Primitive Functions</TITLE>
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</HEAD>
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<BODY>
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<meta name="description" value=" Some Primitive Functions">
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<meta name="keywords" value="lp">
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<meta name="resource-type" value="document">
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<meta name="distribution" value="global">
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<P>
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<BR> <HR>
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<A HREF="node8.html"><IMG ALIGN=BOTTOM ALT="next" SRC="next_motif.gif"></A>
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<A HREF="node2.html"><IMG ALIGN=BOTTOM ALT="up" SRC="up_motif.gif"></A>
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<A HREF="node6.html"><IMG ALIGN=BOTTOM ALT="previous" SRC="previous_motif.gif"></A> <BR>
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<A HREF="lp.html"><B>Contents</B></A>
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<B> Next:</B>
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<A HREF="node8.html"> Constructors: ConsList, </A>
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<B>Up:</B>
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<A HREF="node2.html"> LISt Processing</A>
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<B> Previous:</B>
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<A HREF="node6.html"> Lists</A>
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<BR> <HR> <P>
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<H1> Some Primitive Functions</H1>
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<P>
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Functions that are built into the Lisp language are called ``primitive functions.'' There are (of course) lots of primitive functions in Lisp, including all the math functions you would expect. Here's a list of some of the more common math functions:
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<P>
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+, -, *, /, exp, expt, log, sqrt, sin, cos, tan, max, min.
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<P>
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You should look at the appendix entries for these functions and play with them to learn how they work.
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<P>
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More important to the list-processing identity of Lisp are the
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primitive functions that allow selection from lists and construction
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of lists. The important constructor functions are cons, list, and
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append. The two principal selector functions are first and rest.
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<P>
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<BR> <HR>
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<UL>
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<LI>
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<A HREF="node8.html"> Constructors: Cons, List, and Append</A>
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<LI>
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<A HREF="node9.html"> Quote</A>
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<LI>
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<A HREF="node10.html"> Selectors: First and Rest</A>
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</UL>
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<BR> <HR>
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<P>
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<ADDRESS>
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<I>© Colin Allen & Maneesh Dhagat <BR>
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March 2007 </I>
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</ADDRESS>
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</BODY>
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