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<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>slop</title><link rel="stylesheet" href="../../jargon.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.61.0"/><link rel="home" href="../index.html" title="The Jargon File"/><link rel="up" href="../S.html" title="S"/><link rel="previous" href="slim.html" title="slim"/><link rel="next" href="slopsucker.html" title="slopsucker"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">slop</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="slim.html">Prev</a> </td><th width="60%" align="center">S</th><td width="20%" align="right"> <a accesskey="n" href="slopsucker.html">Next</a></td></tr></table><hr/></div><dt><a id="slop"/><dt xmlns="" id="slop"><b>slop</b>: <span xmlns="http://www.w3.org/1999/xhtml" class="grammar">n.</span></dt></dt><dd><p> 1. A one-sided <a href="../F/fudge-factor.html"><i class="glossterm">fudge factor</i></a>, that is, an
allowance for error but in only one of two directions. For example, if you
need a piece of wire 10 feet long and have to guess when you cut it, you
make very sure to cut it too long, by a large amount if necessary, rather
than too short by even a little bit, because you can always cut off the
slop but you can't paste it back on again. When discrete quantities are
involved, slop is often introduced to avoid the possibility of being on the
losing side of a <a href="../F/fencepost-error.html"><i class="glossterm">fencepost error</i></a>. </p></dd><dd><p> 2. The percentage of &#8216;extra&#8217; code generated by a
compiler over the size of equivalent assembler code produced by
<a href="../H/hand-hacking.html"><i class="glossterm">hand-hacking</i></a>; i.e., the space (or maybe time) you
lose because you didn't do it yourself. This number is often used as a
measure of the goodness of a compiler; slop below 5% is very good, and 10%
is usually acceptable. With modern compiler technology, esp. on RISC
machines, the compiler's slop may actually be
<span class="emphasis"><em>negative</em></span>; that is, humans may be unable to generate
code as good. This is one of the reasons assembler programming is no
longer common.</p></dd><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="slim.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="../S.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="slopsucker.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">slim </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> slopsucker</td></tr></table></div></body></html>