Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: Notesfiles; site ea.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!ihnp4!inuxc!pur-ee!uiucdcs!ea!mwm
From: mwm@ea.UUCP
Newsgroups: net.physics
Subject: Re: VMS vs. Unix (programs) - (nf)
Message-ID: <9900004@ea.UUCP>
Date: Sat, 30-Jun-84 14:55:00 EDT
Article-I.D.: ea.9900004
Posted: Sat Jun 30 14:55:00 1984
Date-Received: Wed, 11-Jul-84 00:23:42 EDT
References: <360@noao.UUCP>
Lines: 21
Nf-ID: #R:noao:-36000:ea:9900004:000:617
Nf-From: ea!mwm    Jun 30 13:55:00 1984

#R:noao:-36000:ea:9900004:000:617
ea!mwm    Jun 30 13:55:00 1984

/***** ea:net.physics / noao!allan /  5:17 am  Jun 28, 1984 */
I conceed. C is faster than fortran when you write your programs correctly.

Peter Allan
UUCP:	{akgua,allegra,arizona,decvax,hao,ihnp4,lbl-csam,seismo}!noao!allan
/* ---------- */

Peter -

I feel that you ought to point out that this is true *only if you are using
double precision.* If you don't need double precision, then the single
precision f77 code is faster than your hand-optimized C.

This also leaves open the question of what C does to a carefully tuned
(tuned for accuracy, that is) algorithm if/when it rearranges your
expressions.

	<mike