From: Mark H Weaver <mhw@netris.org>
To: "Göran Weinholt" <goran@weinholt.se>
Cc: 14871-done@debbugs.gnu.org
Subject: bug#14871: flonum procedures returning non-flonum objects
Date: Tue, 16 Jul 2013 04:53:49 -0400 [thread overview]
Message-ID: <87bo6251ia.fsf@tines.lan> (raw)
In-Reply-To: <87ip0c6iz3.fsf@industria.weinholt.se> ("Göran Weinholt"'s message of "Mon, 15 Jul 2013 15:38:56 +0200")
Göran Weinholt <goran@weinholt.se> writes:
> one property of the flonum procedures in r6rs is that they return
> flonums. This should not happen:
>
> scheme@(guile-user)> (import (rnrs))
> scheme@(guile-user)> (fllog -1.0)
> $1 = 0.0+3.141592653589793i
> scheme@(guile-user)> (flsqrt -1.0)
> $2 = 0.0+1.0i
> scheme@(guile-user)> (flasin 3.0)
> $3 = 1.5707963267948966-1.762747174039086i
> scheme@(guile-user)> (flacos 3.0)
> $4 = 0.0+1.762747174039086i
> scheme@(guile-user)> (flexpt -1.0 0.5)
> $5 = 6.123031769111886e-17+1.0i
>
> These results are not flonums. In r6rs-lib it says "the result may be a
> NaN or some unspecified flonum." So returning +nan.0 would be better.
Fixed in ad922d065c5f8b01c4ace3ee34d26300409e44fa.
Thanks!
Mark
prev parent reply other threads:[~2013-07-16 8:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-15 13:38 bug#14871: flonum procedures returning non-flonum objects Göran Weinholt
2013-07-16 8:53 ` Mark H Weaver [this message]
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