Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!columbia!cubmol!ping
From: ping@cubmol.bio.columbia.edu (Shiping Zhang)
Newsgroups: comp.lang.c
Subject: Re: log10(8)
Message-ID: <1990Feb26.031254.11354@cubmol.bio.columbia.edu>
Date: 26 Feb 90 03:12:54 GMT
References: <3244@servax0.essex.ac.uk>
Reply-To: ping@cubmol.bio.columbia.edu (Shiping Zhang)
Organization: Dept. of Biology, Columbia Univ., New York, NY
Lines: 17

In article <3244@servax0.essex.ac.uk> elzea@sersun0.essex.ac.uk (El-Zein A A) writes:
 
>	My calculator gives me 0.9030899 for log(8),
>	While the following code (which I thought would
>	give me the above value of 0.9030899) prints 
>	-312.770165.
 	.
>	double l;

>	l = log10(8);
>	printf("%f", l);
 
>	Can anybody tell me why.

log10() expects a double as its argument. So use 8.0 instead of 8.

-ping