[PATCH 0/4] Fix huge error for pow detected by Paul Zimmermann

Paul Zimmermann Paul.Zimmermann@inria.fr
Thu Apr 13 05:46:52 GMT 2023


       Dear Andoni,

this kind of feedback is very much appreciated.

I will test your patches next Monday.

Best regards,
Paul

> From: Andoni Arregi <andoni.arregui@gtd-gmbh.de>
> Cc: Andoni Arregi <andoni.arregui@gtd-gmbh.de>
> Date: Wed, 12 Apr 2023 17:34:41 +0200
> 
> This patch series fixes in pow the huge error detected by Paul
> Zimmermann where x is negative and y is a large odd integer.
> 
> There is also an accuracy fix for cases where x is close to 1 and y is
> large.
> 
> Andoni Arregi (4):
>   Fix missing sign for overflow/underflow where x is negative and y is
>     large odd integer
>   Fix x close to 1, y between 2^31 and 2^64
>   Compare j as unsigned
>   Replace always true if with else
> 
>  newlib/libm/math/e_pow.c | 48 +++++++++++++++++++++-------------------
>  1 file changed, 25 insertions(+), 23 deletions(-)
> 
> -- 
> 2.40.0
> 
> 
> 


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