Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!lll-winken!elroy.jpl.nasa.gov!usc!zaphod.mps.ohio-state.edu!think.com!mintaka!mit-eddie!uw-beaver!zephyr.ens.tek.com!tektronix!reed!bowman
From: bowman@reed.UUCP (Eric Bowman)
Newsgroups: comp.sys.mac.programmer
Subject: Script Manager 68881 woes
Keywords: Script Mgr, mc68881,c++
Message-ID: <15933@reed.UUCP>
Date: 24 Jan 91 07:35:25 GMT
Organization: Reed College, Portland OR
Lines: 25

I'm trying to write a function in C++ to convert between floating point
and text using the script manager.  Easy enough:

void plot::DecToString(double theNum,Str255 theString)
{
	extended temp;

	temp = (extended) theNum;
	FormatX2Str(temp,&myNumFormat,&myNumberParts,theString);
}

This works fine, except when the 68881 compiler option is on.

The problem seems clear -- 96 bits versus 80 bits for the length
of an extended.

What's not so clear is how to write this function so that it will
work with or without the 68881.

Has anyone dealt with this before?  Any help would be *greatly* appreciated.

Thanks,
bobo
bowman@reed.{bitnet,UUCP,edu}
...!tektronix!reed!bowman