[PATCH] x86_64: Document libmvec vector functions accuracy [BZ #28766]

[PATCH] x86_64: Document libmvec vector functions accuracy [BZ #28766]

[Sunil K Pandey]

Document maximum 4 ulps accuracy for x86_64 libmvec functions.
This fixes BZ #28766.
---
 manual/math.texi | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/manual/math.texi b/manual/math.texi
index e00871c303..53b196bb6d 100644
--- a/manual/math.texi
+++ b/manual/math.texi
@@ -1395,8 +1395,9 @@ The table lists the ULP values for different architectures.  Different
 architectures have different results since their hardware support for
 floating-point operations varies and also the existing hardware support
 is different.  Only the round-to-nearest rounding mode is covered by
-this table, and vector versions of functions are not covered.
-Functions not listed do not have known errors.
+this table.  Functions not listed do not have known errors.  Vector
+versions of functions in x86_64 libmvec library have the maximum error
+of 4ulps.
 
 @page
 @c This multitable does not fit on a single page
-- 
2.34.1

Re: [PATCH] x86_64: Document libmvec vector functions accuracy [BZ #28766]

[Paul Zimmermann]

       Dear Sunil,

> Date: Tue, 18 Jan 2022 09:33:08 -0800
> From: Sunil K Pandey via Libc-alpha <libc-alpha@sourceware.org>
> Cc: andrey.kolesov@intel.com, marius.cornea@intel.com
> 
> Document maximum 4 ulps accuracy for x86_64 libmvec functions.
> This fixes BZ #28766.
> ---
>  manual/math.texi | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/manual/math.texi b/manual/math.texi
> index e00871c303..53b196bb6d 100644
> --- a/manual/math.texi
> +++ b/manual/math.texi
> @@ -1395,8 +1395,9 @@ The table lists the ULP values for different architectures.  Different
>  architectures have different results since their hardware support for
>  floating-point operations varies and also the existing hardware support
>  is different.  Only the round-to-nearest rounding mode is covered by
> -this table, and vector versions of functions are not covered.
> -Functions not listed do not have known errors.
> +this table.  Functions not listed do not have known errors.  Vector
> +versions of functions in x86_64 libmvec library have the maximum error
> +of 4ulps.
>  
>  @page
>  @c This multitable does not fit on a single page
> -- 
> 2.34.1

looks good to me, with two small editorial changes:

   Vector versions of functions in *the* x86_64 libmvec library have *a*
   maximum error of 4 ulps.

Thanks!
Paul

[PATCH v2] x86_64: Document libmvec vector functions accuracy [BZ #28766]

[Sunil K Pandey]

Document maximum 4 ulps accuracy for x86_64 libmvec functions.
This fixes BZ #28766.
---
 manual/math.texi | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/manual/math.texi b/manual/math.texi
index e00871c303..477a18b6d1 100644
--- a/manual/math.texi
+++ b/manual/math.texi
@@ -1395,8 +1395,9 @@ The table lists the ULP values for different architectures.  Different
 architectures have different results since their hardware support for
 floating-point operations varies and also the existing hardware support
 is different.  Only the round-to-nearest rounding mode is covered by
-this table, and vector versions of functions are not covered.
-Functions not listed do not have known errors.
+this table.  Functions not listed do not have known errors.  Vector
+versions of functions in the x86_64 libmvec library have a maximum error
+of 4 ulps.
 
 @page
 @c This multitable does not fit on a single page
-- 
2.34.1

Re: [PATCH v2] x86_64: Document libmvec vector functions accuracy [BZ #28766]

[Paul Zimmermann]

       Dear Sunil,

looks good to me. Thanks.
Paul

Reviewed-By: Paul Zimmermann <Paul.Zimmermann@inria.fr>

> Date: Wed, 19 Jan 2022 07:43:48 -0800
> From: Sunil K Pandey via Libc-alpha <libc-alpha@sourceware.org>
> Cc: andrey.kolesov@intel.com, marius.cornea@intel.com
> 
> Document maximum 4 ulps accuracy for x86_64 libmvec functions.
> This fixes BZ #28766.
> ---
>  manual/math.texi | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/manual/math.texi b/manual/math.texi
> index e00871c303..477a18b6d1 100644
> --- a/manual/math.texi
> +++ b/manual/math.texi
> @@ -1395,8 +1395,9 @@ The table lists the ULP values for different architectures.  Different
>  architectures have different results since their hardware support for
>  floating-point operations varies and also the existing hardware support
>  is different.  Only the round-to-nearest rounding mode is covered by
> -this table, and vector versions of functions are not covered.
> -Functions not listed do not have known errors.
> +this table.  Functions not listed do not have known errors.  Vector
> +versions of functions in the x86_64 libmvec library have a maximum error
> +of 4 ulps.
>  
>  @page
>  @c This multitable does not fit on a single page
> -- 
> 2.34.1