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Path: utzoo!watmath!clyde!caip!think!ima!haddock!karl
From: karl@haddock
Newsgroups: net.lang.c
Subject: Re: Using SCANF with DOUBLE precisi
Message-ID: <86900069@haddock>
Date: Tue, 30-Sep-86 11:31:00 EDT
Article-I.D.: haddock.86900069
Posted: Tue Sep 30 11:31:00 1986
Date-Received: Wed, 1-Oct-86 06:19:06 EDT
References: <9939@cgl.ucsf.edu.ucsfcgl.UUCP>
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Nf-ID: #R:cgl.ucsf.edu.ucsfcgl.UUCP:9939:haddock:86900069:000:945
Nf-From: haddock!karl    Sep 30 11:31:00 1986


ucsfcgl!kneller (Don Kneller) writes:
>In article <22@orion.UUCP> vaughan@orion.UUCP (Robert Vaughan) writes:
>>scanf("%lf",&foo);
>Except, of course, in the infinite wisdom of Silicon Graphics whose
>floats and doubles are the same size so one must use %f for both.  The
>"justification" is that they have yet another floating point type called
>long float with gets the %lf format.  It's painfully nonportable.  Sigh.

Then it isn't a C compiler and/or library.

Do you really mean "long float"?  In K&R that's a synonym for "double"; ANSI
removed this and added "long double" for which the format is "%Lf" (note
uppercase L).  The elegant solution would've been "short float" (formerly
"float"), format "%hf"; "float" (formerly double), format "%f"; and "long
float" (what ANSI calls "long double"), format "%lf", but elegance must defer
to compatibility.  Sigh.

Karl W. Z. Heuer (ima!haddock!karl or karl@haddock.isc.com), The Walking Lint