Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!samsung!aplcen!haven!ncifcrf!nlm-mcs!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: Floating variables
Message-ID: <11705@smoke.BRL.MIL>
Date: 29 Nov 89 19:45:10 GMT
References: <1404@utkcs2.cs.utk.edu>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 15

In article <1404@utkcs2.cs.utk.edu> wozniak@utkux1.utk.edu (Bryon Lape) writes:
>In C, are floating point numbers allowed to hold negative numbers?

Of course.

>I am trying to convert a BASIC programme and I must have negative
>calculations for floating point numbers.  So far the fern leaf is not
>generating.

I can't help you with gardening, but in C you need to be careful
when converting floating-point to integer type; some implementations
truncate toward zero, others toward minus infinity.  Also, don't
expect the result of a floating-point calculation that "should" be
an exact integer value to actually be one.  You might get 0.9999999
instead of 1.0000000, and truncation of this will surprise you.