Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cmcl2!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: method of getting around the rounding of floating and double precision numbers using printf().
Keywords: rounding
Message-ID: <10529@smoke.BRL.MIL>
Date: 15 Jul 89 04:46:08 GMT
References: <4864@ihlpe.ATT.COM>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 10

In article <4864@ihlpe.ATT.COM> jec@ihlpe.ATT.COM (Morris) writes:
>I have tried all the usual stuff with the printf() statement [the
>%*.*f,7,2,variable_name  or %4.2f  or %.2  etc.,etc.] but none of
>these techniques were able to get around the rounding when printing
>these variables.

printf() is required to always print a properly-rounded representation
of its floating-point argument.  If you want to print some sort of
truncated quantity, you'll have to truncate it yourself before feeding
it to printf().  For example:	x = floor(x*100.0) / 100.0;