Hi Morten,
On Thu, Feb 29, 2024 at 07:28:10PM -0500, Morten Welinder wrote:
> cbrt:
> The phrase "every representable real value has a representable real
> cube root" is wrong. In fact, a representable cube root is quite
> rare. This should be something like "every representable real value
> has a real cube root and rounding it to a representable value never
> causes overflow or underflow."
Thanks for the report! I've fixed it with the following commit (your
wording, except for a 'nor' instead of 'or').
This one is also present in the glibc manual, so I'll also send a fix
for it, Adhemerval.
Have a lovely night!
Alex
---
commit da7bb7434ce8b20deaed58cac9e942c3531a5db3 (HEAD -> contrib)
Author: Alejandro Colomar <alx@xxxxxxxxxx>
Date: Tue Mar 5 02:01:34 2024 +0100
cbrt.3: wfix
On Thu, Feb 29, 2024 at 07:28:10PM -0500, Morten Welinder wrote:
> The phrase "every representable real value has a representable real
> cube root" is wrong. In fact, a representable cube root is quite
> rare.
Reported-by: Morten Welinder <mwelinder@xxxxxxxxx>
Cowritten-by: Morten Welinder <mwelinder@xxxxxxxxx>
Cc: Adhemerval Zanella Netto <adhemerval.zanella@xxxxxxxxxx>
Signed-off-by: Alejandro Colomar <alx@xxxxxxxxxx>
diff --git a/man3/cbrt.3 b/man3/cbrt.3
index cf9c41771..64fc3c072 100644
--- a/man3/cbrt.3
+++ b/man3/cbrt.3
@@ -47,8 +47,11 @@ .SH SYNOPSIS
.SH DESCRIPTION
These functions return the (real) cube root of
.IR x .
-This function cannot fail; every representable real value has a
-representable real cube root.
+This function cannot fail;
+every representable real value
+has a real cube root,
+and rounding it to a representable value
+never causes overflow nor underflow.
.SH RETURN VALUE
These functions return the cube root of
.IR x .
--
<https://www.alejandro-colomar.es/>
Looking for a remote C programming job at the moment.
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