From:	terra AT diku DOT dk (Morten Welinder)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Problems with DJGPP V2.01 - atof() function
Date:	29 Nov 1996 15:00:17 GMT
Organization:	Department of Computer Science, U of Copenhagen
Lines:	19
Sender:	terra AT tyr DOT diku DOT dk
Message-ID:	<57mtq1$4mo@vidar.diku.dk>
References:	<329e68a5 DOT 10316617 AT news DOT ua DOT pt>
NNTP-Posting-Host:	tyr.diku.dk
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

afonso AT inesca DOT inesca DOT pt writes:

>                char string[]="1.13";
>                int  result;
>                ...
>                result = (int)(atof(string)*100);
>                ...

>        I've got result = 112!!! not 113 as I wished, because
>the function atof() return is 1.29999... not 1.13 (and I only have
>an old i386).

Getting 112 is well within the C standard.  If your program does
not work in this situation then you have a bug.

Floating point numbers are not exactly represented; you will see
rounding errors.

Morten

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