[PATCH] signal.7: Better description for SIGFPE

[PATCH] signal.7: Better description for SIGFPE

[Vincent Lefevre]

SIGFPE has comment "Floating-point exception", which corresponds to
the FPE acronym. But this is misleading as this signal may also be
generated by an integer division by 0.

Change it to "Erroneous arithmetic operation" from POSIX:
https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/signal.h.html

Note: the GNU C Library manual says "fatal arithmetic error".
https://www.gnu.org/software/libc/manual/html_node/Program-Error-Signals.html

Signed-off-by: Vincent Lefevre <vincent@vinc17.net>
---
 man/man7/signal.7 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/man/man7/signal.7 b/man/man7/signal.7
index 7a9e91cc7..d19f171b3 100644
--- a/man/man7/signal.7
+++ b/man/man7/signal.7
@@ -373,7 +373,7 @@ SIGCHLD	P1990	Ign	Child stopped or terminated
 SIGCLD	\-	Ign	A synonym for \fBSIGCHLD\fP
 SIGCONT	P1990	Cont	Continue if stopped
 SIGEMT	\-	Term	Emulator trap
-SIGFPE	P1990	Core	Floating-point exception
+SIGFPE	P1990	Core	Erroneous arithmetic operation
 SIGHUP	P1990	Term	Hangup detected on controlling terminal
 			or death of controlling process
 SIGILL	P1990	Core	Illegal Instruction
-- 
2.45.2

Re: [PATCH] signal.7: Better description for SIGFPE

[Vincent Lefevre]

On 2024-09-24 13:54:46 +0200, Vincent Lefevre wrote:
> Change it to "Erroneous arithmetic operation" from POSIX:
> https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/signal.h.html

BTW, the term "Erroneous arithmetic operation" also comes from
the ISO C standard (present at least since C99). I don't know
which one was the first to standardize it...

-- 
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

Re: [PATCH] signal.7: Better description for SIGFPE

[Alejandro Colomar]

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Hi Vincent,

On Tue, Sep 24, 2024 at 01:54:46PM +0200, Vincent Lefevre wrote:
> SIGFPE has comment "Floating-point exception", which corresponds to
> the FPE acronym. But this is misleading as this signal may also be
> generated by an integer division by 0.
> 
> Change it to "Erroneous arithmetic operation" from POSIX:
> https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/signal.h.html
> 
> Note: the GNU C Library manual says "fatal arithmetic error".
> https://www.gnu.org/software/libc/manual/html_node/Program-Error-Signals.html
> 
> Signed-off-by: Vincent Lefevre <vincent@vinc17.net>

Patch applied.  Thanks!

Have a lovely day!
Alex

> ---
>  man/man7/signal.7 | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/man/man7/signal.7 b/man/man7/signal.7
> index 7a9e91cc7..d19f171b3 100644
> --- a/man/man7/signal.7
> +++ b/man/man7/signal.7
> @@ -373,7 +373,7 @@ SIGCHLD	P1990	Ign	Child stopped or terminated
>  SIGCLD	\-	Ign	A synonym for \fBSIGCHLD\fP
>  SIGCONT	P1990	Cont	Continue if stopped
>  SIGEMT	\-	Term	Emulator trap
> -SIGFPE	P1990	Core	Floating-point exception
> +SIGFPE	P1990	Core	Erroneous arithmetic operation
>  SIGHUP	P1990	Term	Hangup detected on controlling terminal
>  			or death of controlling process
>  SIGILL	P1990	Core	Illegal Instruction
> -- 
> 2.45.2
> 
> 

-- 
<https://www.alejandro-colomar.es/>

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