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<!DOCTYPE HTML PUBLIC "-//W3O//DTD W3 HTML 2.0//EN"><!-- This collection of hypertext pages is Copyright 1995-2005 by Steve Summit. --><!-- Content from the book "C Programming FAQs: Frequently Asked Questions" --><!-- (Addison-Wesley, 1995, ISBN 0-201-84519-9) is made available here by --><!-- permission of the author and the publisher as a service to the community. --><!-- It is intended to complement the use of the published text --><!-- and is protected by international copyright laws. --><!-- The on-line content may be accessed freely for personal use --><!-- but may not be published or retransmitted without explicit permission. --><!-- --><!-- this page built Sat Dec 24 21:47:46 2005 by faqproc version 2.7 --><!-- from source file fp.sgml dated Fri Jul 2 23:51:18 2004 --><!-- corresponding to FAQ list version 4.0 --><html><!-- Mirrored from c-faq.com/fp/fpnotlinked.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 07:59:00 GMT --><head><meta name=GENERATOR content="faqproc"><title>Question 14.13</title><link href="mathsrc.html" rev=precedes><link href="../varargs/protos.html" rel=precedes><link href="index.html" rev=subdocument></head><body bgcolor="#ffffff"><a href="mathsrc.html" rev=precedes><img src="../images/buttonleft.gif" alt="prev"></a><a href="index.html" rev=subdocument><img src="../images/buttonup.gif" alt="up"></a><a href="../varargs/protos.html" rel=precedes><img src="../images/buttonright.gif" alt="next"></a> <a href="../index-2.html"><img src="../images/buttontop.gif" alt="top/contents"></a><a href="../search.html"><img src="../images/buttonsrch.gif" alt="search"></a><hr><p><!-- qbegin --><h1>comp.lang.c FAQ list<font color=blue>·</font><!-- qtag -->Question 14.13</h1><p><font face=Helvetica size=8 color=blue><b>Q:</b></font>I'm having trouble with a Turbo C program which crashes and sayssomething like``floating point formats not linked.''</p><p><hr><p><font face=Helvetica size=8 color=blue><b>A:</b></font>Some compilers for small machines, includingTurbo C(and Ritchie's original PDP-11 compiler),leave outcertainfloating point support if it looks like it will not be needed.In particular, the non-floating-point versionsof <TT>printf</TT>and <TT>scanf</TT>save space by not includingcode to handle <TT>%e</TT>, <TT>%f</TT>,and <TT>%g</TT>.It happens thatBorland'sheuristics for determiningwhether the program uses floating pointare insufficient,and theprogrammer mustsometimesinserta dummycallto a floating-point library function(such as <TT>sqrt</TT>; any willdo)to force loading offloating-point support.(See the comp.os.msdos.programmer FAQ list for moreinformation.)</p><p>A partially-related problem,resulting in a similar error message(perhaps ``floating point not loaded'')can apparently occurundersomeMS-DOS compilerswhenan incorrect variant of the floating-point library is linked.Check your compilermanual'sdescription of the variousfloating-point libraries.</p><p>Additional links:<a href="sd18.html" rel=subdocument>another possibility</a></p><!-- aend --><p><hr><a href="mathsrc.html" rev=precedes><img src="../images/buttonleft.gif" alt="prev"></a><a href="index.html" rev=subdocument><img src="../images/buttonup.gif" alt="up"></a><a href="../varargs/protos.html" rel=precedes><img src="../images/buttonright.gif" alt="next"></a> <a href="../questions.html"><img src="../images/buttontop.gif" alt="contents"></a><a href="../search.html"><img src="../images/buttonsrch.gif" alt="search"></a><br><!-- lastfooter --><a href="../about.html">about this FAQ list</a> <a href="../eskimo.html">about eskimo</a> <a href="../search.html">search</a> <a href="../feedback.html">feedback</a> <a href="copyright.html">copyright</a><p>Hosted by<a href="http://www.eskimo.com/"><img src="../../www.eskimo.com/img/link/eskitiny.gif" alt="Eskimo North"></a></body><!-- Mirrored from c-faq.com/fp/fpnotlinked.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 07:59:00 GMT --></html>⌨️ 快捷键说明
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