Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!yale!cmcl2!adm!smoke!gwyn
From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: TC++: "floating point formats not linked"
Message-ID: <15316@smoke.brl.mil>
Date: 25 Feb 91 16:55:25 GMT
References: <1991Feb9.193059.14322@ucselx.sdsu.edu> <LT5NQEC@methan.chemie.fu-berlin.de> <268@nazgul.UUCP>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 14

In article <268@nazgul.UUCP> bright@nazgul.UUCP (Walter Bright) writes:
>I'm all ears if anyone has a suggestion on how to get the best of both
>by default.

What I did when I maintained the Ritchie PDP-11 C compiler was to arrange
for the compiler to generate a reference to some symbol like "__fltused"
whenever there was ANY use of floating point, even simply a
declaration of a type whose base type was float or double, in a
translation unit.  Of course the system C library was set up so that a
reference to "__fltused" caused the full format support to be linked
rather than the usual integer-only format support object module.

You could of course also have the compiler pay special attention to the
format strings for *scanf() and *printf(), although that is not foolproof.