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From: cptgrp@ihlpa.ATT.COM (Klappal)
Newsgroups: comp.unix.questions
Subject: Re: Help needed with fmod()
Message-ID: <4808@ihlpa.ATT.COM>
Date: Wed, 29-Jul-87 16:07:44 EDT
Article-I.D.: ihlpa.4808
Posted: Wed Jul 29 16:07:44 1987
Date-Received: Sat, 1-Aug-87 02:25:39 EDT
References: <2363@cvl.umd.edu>
Reply-To: cptgrp@ihlpa.UUCP (55542-Klappal,R.L.)
Organization: AT&T Bell Laboratories
Lines: 33
Keywords: old BSD math library

In article <2363@cvl.umd.edu> greg@cvl.umd.edu (Greg Koolbeck) writes:
>
>  Hello, 
> I am looking for information about a function that was apparently in the 
>older BSD math libary called fmod. It is called floating modulus in the 
>comments of the program we have that called it, and the usage appears to be:
>double = fmod (double, double). If anyone knows what this turkey did exactly,
>or has the source for it, I'd appreciate some help. Incidentally, our site has
>a Berkeley source license. My address is:
>   ARPA: greg@cvl.umd.edu
>   UUCP: seismo!mimsy!cvl!greg. Please send E-mail if you have any useful
>information. Thanks in advance.
>                                     Greg Koolbeck

It is actually
	double
	fmod(arg,addr)

	double	arg;
	double	*addr;

	{
	...
	}

	which returned the fractional part, and stored the integer part
	at *addr.  The only problem (I know of) with it is that if a negative
	number was supplied, both pieces were left negative.  

	(may be a feature, not a bug, but it wasn't what I expected.)

Richard Klappal		..ihnp4!chinet!uklpl!rlk	or
			..ihnp4!ihu1h!rlk