Hi Morten,
On Mon, Mar 04, 2024 at 06:52:10PM +0100, Alejandro Colomar wrote:
> > logb:
> > The formula "floor(log2(x))" should be "floor(log2(fabs(x)))". (Or
> > ...abs(...) if it's meant to be math and not C.)
I've applied thge following patch:
commit 1d83ce827aac984a26430b4f6107182f4b076874 (HEAD -> contrib, alx/contrib)
Author: Alejandro Colomar <alx@xxxxxxxxxx>
Date: Tue Mar 5 00:20:09 2024 +0100
logb.3: logb(x) is floor(log2(fabs(x)))
log2(3) doesn't accept negative input, but it seems logb(3) does accept
it.
Link: <https://lore.kernel.org/linux-man/ZeYKUOKYS7G90SaV@debian/T/#u>
Reported-by: Morten Welinder <mwelinder@xxxxxxxxx>
Cc: Adhemerval Zanella Netto <adhemerval.zanella@xxxxxxxxxx>
Signed-off-by: Alejandro Colomar <alx@xxxxxxxxxx>
diff --git a/man3/logb.3 b/man3/logb.3
index 7cbb2470a..7a1ad2f4a 100644
--- a/man3/logb.3
+++ b/man3/logb.3
@@ -58,7 +58,7 @@ .SH DESCRIPTION
is 2,
.BI logb( x )
is equal to
-.BI floor(log2( x ))\fR,
+.BI floor(log2(fabs( x )))\f[R],\f[]
except that it is probably faster.
.P
If
I'll push it tomorrow.
Have a lovely night!
Alex
--
<https://www.alejandro-colomar.es/>
Looking for a remote C programming job at the moment.
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