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From: meissner@dg_rtp.UUCP (Michael Meissner)
Newsgroups: net.lang.c
Subject: Re: Float Double Parameters
Message-ID: <258@dg_rtp.UUCP>
Date: Mon, 31-Mar-86 09:17:02 EST
Article-I.D.: dg_rtp.258
Posted: Mon Mar 31 09:17:02 1986
Date-Received: Wed, 2-Apr-86 02:49:49 EST
References: <2600042@ccvaxa>
Reply-To: meissner@dg_rtp.UUCP (Michael Meissner)
Organization: Data General (Languages @ Westborough, MA.)
Lines: 19

In article <2600042@ccvaxa> aglew@ccvaxa.UUCP writes:
>
>Mouse Parker found a bug in Sun C's treatment of float parameters. 
>His entire letter is reproduced below, since it was from another newsgroup.
>
>>     First and  foremost, get rid of the stupid promotion to doubles!  I
>>have  considered  this  a  misfeature  ever   since  I   heard   of  it.
>>Tangentially  to this  topic,  does X3J11 have anything to  say on  this
>>matter?
>
>X3J11 says "arguments that have type float are promoted to double". Too bad.

Close, but no cigar.  It is true that in the abscence of prototype information,
a compiler conforming to X3J11 has to convert float to double on calls (but
is allowed to use single precision in expressions).  However, if you have a
prototype in scope, the compiler is not obligated to convert to double
precision.

	Michael Meissner, Data General