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Path: utzoo!watmath!clyde!bonnie!akgua!gatech!ut-sally!seismo!brl-tgr!gwyn
From: gwyn@brl-tgr.ARPA (Doug Gwyn <gwyn>)
Newsgroups: net.lang.c
Subject: Re:  C Floating point arithmetic
Message-ID: <388@brl-tgr.ARPA>
Date: Fri, 6-Dec-85 10:43:54 EST
Article-I.D.: brl-tgr.388
Posted: Fri Dec  6 10:43:54 1985
Date-Received: Sat, 7-Dec-85 21:21:18 EST
References: <1087@lll-crg.ARpA>, <4647@alice.UUCP> <423@stcvax.UUCP>
Organization: Ballistic Research Lab
Lines: 15

> >>	float a,b;
> >>
> >>	a = b + 1.0;	/* Gets done in double because 1.0 is a double.
> >>			Gag me with a spoon. */
> >
> > Nah, gets done in single because the compiler realizes that 1.0 has
> > the same representation in single and double, and therefore that
> > the result of the addition will be the same.
> 
> Sorry, it get's done in double.  ALL floats are converted to double prior
> to any operation.  (Refer to K&R p. 41 on implicit type conversions.)

I really wish people would NOT POST if they don't know what
they're talking about.  Andy Koenig, as usual, gave a correct
answer and some turkey, as usual, contradicts him.  Sheesh.