From:	ron DOT t DOT lewis AT softtech DOT brisnet DOT org DOT au (Ron T Lewis)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Floating Point???
Date:	05 Mar 97 09:45:16
Organization:	Soft-Tech +61-7-3869-2666
Lines:	32
Message-ID:	<4b5_9703051119@softtech.brisnet.org.au>
NNTP-Posting-Host:	bbs.st.net.au
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hello All,
          Please can someone help a friend with a floating point problem 
he is having whilst writing a trigonomic program which requires floating 
point accuracy..   He's using DJGPP V2.1

Please don't ask WHY he wants such accuracy cos I don't know..

The problem lies below...

int main()
{
float a;
a=4.00/5.00;
printf("float = %.12f\n",a);
return(1);
}
Ans = 0.800000011921

The correct answer should be 0.800000000000 but he gets these extroneous 
numbers tacked on the end???

He's using a 486/66 and I tried it on my pentium and wound up with the 
same result..

Can he get 12 point accuracy and if so how??

Over to the experts....  :-)

(OH! Well, Lifes like that Sumtimes) Regards Ron T Lewis

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