From: James Hogan <james.hogan@imgtec.com>
To: Aleksandar Markovic <aleksandar.markovic@rt-rk.com>
Cc: <linux-mips@linux-mips.org>,
Aleksandar Markovic <aleksandar.markovic@imgtec.com>,
Miodrag Dinic <miodrag.dinic@imgtec.com>,
Goran Ferenc <goran.ferenc@imgtec.com>,
Douglas Leung <douglas.leung@imgtec.com>,
<linux-kernel@vger.kernel.org>,
Paul Burton <paul.burton@imgtec.com>,
Petar Jovanovic <petar.jovanovic@imgtec.com>,
Raghu Gandham <raghu.gandham@imgtec.com>,
Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH v3 05/16] MIPS: math-emu: <MAX|MAXA|MIN|MINA>.<D|S>: Fix quiet NaN propagation
Date: Fri, 21 Jul 2017 15:45:04 +0100 [thread overview]
Message-ID: <20170721144504.GJ6973@jhogan-linux.le.imgtec.org> (raw)
In-Reply-To: <1500646206-2436-6-git-send-email-aleksandar.markovic@rt-rk.com>
[-- Attachment #1: Type: text/plain, Size: 8872 bytes --]
On Fri, Jul 21, 2017 at 04:09:03PM +0200, Aleksandar Markovic wrote:
> From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
>
> Fix the value returned by <MAX|MAXA|MIN|MINA>.<D|S>, if both inputs
> are quiet NaNs. The specifications of <MAX|MAXA|MIN|MINA>.<D|S> state
> that the returned value in such cases should be the quiet NaN
> contained in register fs.
>
> The relevant example:
>
> MAX.S fd,fs,ft:
> If fs contains qNaN1, and ft contains qNaN2, fd is going to contain
> qNaN1 (without this patch, it used to contain qNaN2).
>
Consider adding:
Fixes: a79f5f9ba508 ("MIPS: math-emu: Add support for the MIPS R6 MAX{, A} FPU instruction")
Fixes: 4e9561b20e2f ("MIPS: math-emu: Add support for the MIPS R6 MIN{, A} FPU instruction")
> Signed-off-by: Miodrag Dinic <miodrag.dinic@imgtec.com>
> Signed-off-by: Goran Ferenc <goran.ferenc@imgtec.com>
> Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Consider adding:
Cc: <stable@vger.kernel.org> # 4.3+
> ---
> arch/mips/math-emu/dp_fmax.c | 8 ++++++--
> arch/mips/math-emu/dp_fmin.c | 8 ++++++--
> arch/mips/math-emu/sp_fmax.c | 8 ++++++--
> arch/mips/math-emu/sp_fmin.c | 8 ++++++--
> 4 files changed, 24 insertions(+), 8 deletions(-)
>
> diff --git a/arch/mips/math-emu/dp_fmax.c b/arch/mips/math-emu/dp_fmax.c
> index fd71b8d..567fc33 100644
> --- a/arch/mips/math-emu/dp_fmax.c
> +++ b/arch/mips/math-emu/dp_fmax.c
> @@ -47,6 +47,9 @@ union ieee754dp ieee754dp_fmax(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754dp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
couldn't the above...
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -54,7 +57,6 @@ union ieee754dp ieee754dp_fmax(union ieee754dp x, union ieee754dp y)
... go somewhere around here and fall through to the existing return x
case?
and same below of course.
Otherwise:
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cheers
James
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> @@ -147,6 +149,9 @@ union ieee754dp ieee754dp_fmaxa(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754dp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -154,7 +159,6 @@ union ieee754dp ieee754dp_fmaxa(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> diff --git a/arch/mips/math-emu/dp_fmin.c b/arch/mips/math-emu/dp_fmin.c
> index c1072b0..77f7ca9 100644
> --- a/arch/mips/math-emu/dp_fmin.c
> +++ b/arch/mips/math-emu/dp_fmin.c
> @@ -47,6 +47,9 @@ union ieee754dp ieee754dp_fmin(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754dp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -54,7 +57,6 @@ union ieee754dp ieee754dp_fmin(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> @@ -147,6 +149,9 @@ union ieee754dp ieee754dp_fmina(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754dp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -154,7 +159,6 @@ union ieee754dp ieee754dp_fmina(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> diff --git a/arch/mips/math-emu/sp_fmax.c b/arch/mips/math-emu/sp_fmax.c
> index 4d00084..d46e8e4 100644
> --- a/arch/mips/math-emu/sp_fmax.c
> +++ b/arch/mips/math-emu/sp_fmax.c
> @@ -47,6 +47,9 @@ union ieee754sp ieee754sp_fmax(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754sp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -54,7 +57,6 @@ union ieee754sp ieee754sp_fmax(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> @@ -147,6 +149,9 @@ union ieee754sp ieee754sp_fmaxa(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754sp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -154,7 +159,6 @@ union ieee754sp ieee754sp_fmaxa(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> diff --git a/arch/mips/math-emu/sp_fmin.c b/arch/mips/math-emu/sp_fmin.c
> index 4eb1bb9..b528c4b 100644
> --- a/arch/mips/math-emu/sp_fmin.c
> +++ b/arch/mips/math-emu/sp_fmin.c
> @@ -47,6 +47,9 @@ union ieee754sp ieee754sp_fmin(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754sp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -54,7 +57,6 @@ union ieee754sp ieee754sp_fmin(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> @@ -147,6 +149,9 @@ union ieee754sp ieee754sp_fmina(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754sp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -154,7 +159,6 @@ union ieee754sp ieee754sp_fmina(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> --
> 2.7.4
>
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WARNING: multiple messages have this Message-ID (diff)
From: James Hogan <james.hogan@imgtec.com>
To: Aleksandar Markovic <aleksandar.markovic@rt-rk.com>
Cc: linux-mips@linux-mips.org,
Aleksandar Markovic <aleksandar.markovic@imgtec.com>,
Miodrag Dinic <miodrag.dinic@imgtec.com>,
Goran Ferenc <goran.ferenc@imgtec.com>,
Douglas Leung <douglas.leung@imgtec.com>,
linux-kernel@vger.kernel.org,
Paul Burton <paul.burton@imgtec.com>,
Petar Jovanovic <petar.jovanovic@imgtec.com>,
Raghu Gandham <raghu.gandham@imgtec.com>,
Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH v3 05/16] MIPS: math-emu: <MAX|MAXA|MIN|MINA>.<D|S>: Fix quiet NaN propagation
Date: Fri, 21 Jul 2017 15:45:04 +0100 [thread overview]
Message-ID: <20170721144504.GJ6973@jhogan-linux.le.imgtec.org> (raw)
Message-ID: <20170721144504.YGY6L2YYxe-3FsOp-6KAyd2rofluQKQLNzRgIvEJY4Q@z> (raw)
In-Reply-To: <1500646206-2436-6-git-send-email-aleksandar.markovic@rt-rk.com>
[-- Attachment #1: Type: text/plain, Size: 8872 bytes --]
On Fri, Jul 21, 2017 at 04:09:03PM +0200, Aleksandar Markovic wrote:
> From: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
>
> Fix the value returned by <MAX|MAXA|MIN|MINA>.<D|S>, if both inputs
> are quiet NaNs. The specifications of <MAX|MAXA|MIN|MINA>.<D|S> state
> that the returned value in such cases should be the quiet NaN
> contained in register fs.
>
> The relevant example:
>
> MAX.S fd,fs,ft:
> If fs contains qNaN1, and ft contains qNaN2, fd is going to contain
> qNaN1 (without this patch, it used to contain qNaN2).
>
Consider adding:
Fixes: a79f5f9ba508 ("MIPS: math-emu: Add support for the MIPS R6 MAX{, A} FPU instruction")
Fixes: 4e9561b20e2f ("MIPS: math-emu: Add support for the MIPS R6 MIN{, A} FPU instruction")
> Signed-off-by: Miodrag Dinic <miodrag.dinic@imgtec.com>
> Signed-off-by: Goran Ferenc <goran.ferenc@imgtec.com>
> Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Consider adding:
Cc: <stable@vger.kernel.org> # 4.3+
> ---
> arch/mips/math-emu/dp_fmax.c | 8 ++++++--
> arch/mips/math-emu/dp_fmin.c | 8 ++++++--
> arch/mips/math-emu/sp_fmax.c | 8 ++++++--
> arch/mips/math-emu/sp_fmin.c | 8 ++++++--
> 4 files changed, 24 insertions(+), 8 deletions(-)
>
> diff --git a/arch/mips/math-emu/dp_fmax.c b/arch/mips/math-emu/dp_fmax.c
> index fd71b8d..567fc33 100644
> --- a/arch/mips/math-emu/dp_fmax.c
> +++ b/arch/mips/math-emu/dp_fmax.c
> @@ -47,6 +47,9 @@ union ieee754dp ieee754dp_fmax(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754dp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
couldn't the above...
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -54,7 +57,6 @@ union ieee754dp ieee754dp_fmax(union ieee754dp x, union ieee754dp y)
... go somewhere around here and fall through to the existing return x
case?
and same below of course.
Otherwise:
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cheers
James
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> @@ -147,6 +149,9 @@ union ieee754dp ieee754dp_fmaxa(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754dp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -154,7 +159,6 @@ union ieee754dp ieee754dp_fmaxa(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> diff --git a/arch/mips/math-emu/dp_fmin.c b/arch/mips/math-emu/dp_fmin.c
> index c1072b0..77f7ca9 100644
> --- a/arch/mips/math-emu/dp_fmin.c
> +++ b/arch/mips/math-emu/dp_fmin.c
> @@ -47,6 +47,9 @@ union ieee754dp ieee754dp_fmin(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754dp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -54,7 +57,6 @@ union ieee754dp ieee754dp_fmin(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> @@ -147,6 +149,9 @@ union ieee754dp ieee754dp_fmina(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754dp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -154,7 +159,6 @@ union ieee754dp ieee754dp_fmina(union ieee754dp x, union ieee754dp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> diff --git a/arch/mips/math-emu/sp_fmax.c b/arch/mips/math-emu/sp_fmax.c
> index 4d00084..d46e8e4 100644
> --- a/arch/mips/math-emu/sp_fmax.c
> +++ b/arch/mips/math-emu/sp_fmax.c
> @@ -47,6 +47,9 @@ union ieee754sp ieee754sp_fmax(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754sp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -54,7 +57,6 @@ union ieee754sp ieee754sp_fmax(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> @@ -147,6 +149,9 @@ union ieee754sp ieee754sp_fmaxa(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754sp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -154,7 +159,6 @@ union ieee754sp ieee754sp_fmaxa(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> diff --git a/arch/mips/math-emu/sp_fmin.c b/arch/mips/math-emu/sp_fmin.c
> index 4eb1bb9..b528c4b 100644
> --- a/arch/mips/math-emu/sp_fmin.c
> +++ b/arch/mips/math-emu/sp_fmin.c
> @@ -47,6 +47,9 @@ union ieee754sp ieee754sp_fmin(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754sp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -54,7 +57,6 @@ union ieee754sp ieee754sp_fmin(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> @@ -147,6 +149,9 @@ union ieee754sp ieee754sp_fmina(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_SNAN, IEEE754_CLASS_INF):
> return ieee754sp_nanxcpt(x);
>
> + case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> + return x;
> +
> /* numbers are preferred to NaNs */
> case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_QNAN):
> @@ -154,7 +159,6 @@ union ieee754sp ieee754sp_fmina(union ieee754sp x, union ieee754sp y)
> case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_QNAN):
> return x;
>
> - case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_QNAN):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_ZERO):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_NORM):
> case CLPAIR(IEEE754_CLASS_QNAN, IEEE754_CLASS_DNORM):
> --
> 2.7.4
>
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next prev parent reply other threads:[~2017-07-21 14:45 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-21 14:08 [PATCH v3 00/16] MIPS: Miscellaneous fixes related to Android Mips emulator Aleksandar Markovic
2017-07-21 14:08 ` [PATCH v3 01/16] input: goldfish: Fix multitouch event handling Aleksandar Markovic
2017-07-21 14:09 ` [PATCH v3 02/16] tty: goldfish: Use streaming DMA for r/w operations on Ranchu platforms Aleksandar Markovic
2017-07-21 14:09 ` [PATCH v3 03/16] tty: goldfish: Implement support for kernel 'earlycon' parameter Aleksandar Markovic
2017-07-21 14:09 ` [PATCH v3 04/16] MIPS: VDSO: Fix clobber lists in fallback code paths Aleksandar Markovic
2017-07-21 14:25 ` James Hogan
2017-07-21 14:25 ` James Hogan
2017-07-21 14:09 ` [PATCH v3 05/16] MIPS: math-emu: <MAX|MAXA|MIN|MINA>.<D|S>: Fix quiet NaN propagation Aleksandar Markovic
2017-07-21 14:45 ` James Hogan [this message]
2017-07-21 14:45 ` James Hogan
2017-07-24 13:36 ` Aleksandar Markovic
2017-07-24 13:45 ` James Hogan
2017-07-21 14:09 ` [PATCH v3 06/16] MIPS: math-emu: <MAX|MAXA|MIN|MINA>.<D|S>: Fix cases of both inputs zero Aleksandar Markovic
2017-07-21 15:03 ` James Hogan
2017-07-21 15:03 ` James Hogan
2017-07-21 14:09 ` [PATCH v3 07/16] MIPS: math-emu: <MAX|MIN>.<D|S>: Fix cases of both inputs negative Aleksandar Markovic
2017-07-21 15:15 ` James Hogan
2017-07-21 15:15 ` James Hogan
2017-07-21 14:09 ` [PATCH v3 08/16] MIPS: math-emu: <MAXA|MINA>.<D|S>: Fix cases of input values with opposite signs Aleksandar Markovic
2017-07-21 15:42 ` James Hogan
2017-07-21 15:42 ` James Hogan
2017-07-24 12:51 ` Aleksandar Markovic
2017-07-21 14:09 ` [PATCH v3 09/16] MIPS: math-emu: <MAXA|MINA>.<D|S>: Fix cases of both infinite inputs Aleksandar Markovic
2017-07-21 15:46 ` James Hogan
2017-07-21 15:46 ` James Hogan
2017-07-21 14:09 ` [PATCH v3 10/16] MIPS: math-emu: MINA.<D|S>: Fix some cases of infinity and zero inputs Aleksandar Markovic
2017-07-21 16:01 ` James Hogan
2017-07-21 16:01 ` James Hogan
2017-07-21 14:09 ` [PATCH v3 11/16] MIPS: math-emu: <MADDF|MSUBF>.<D|S>: Fix NaN propagation Aleksandar Markovic
2017-07-24 10:24 ` James Hogan
2017-07-24 10:24 ` James Hogan
2017-07-24 12:45 ` Aleksandar Markovic
2017-07-24 12:45 ` Aleksandar Markovic
2017-07-21 14:09 ` [PATCH v3 12/16] MIPS: math-emu: <MADDF|MSUBF>.<D|S>: Fix some cases of infinite inputs Aleksandar Markovic
2017-07-24 10:39 ` James Hogan
2017-07-24 10:39 ` James Hogan
2017-07-24 12:49 ` Aleksandar Markovic
2017-07-21 14:09 ` [PATCH v3 13/16] MIPS: math-emu: <MADDF|MSUBF>.<D|S>: Fix some cases of zero inputs Aleksandar Markovic
2017-07-24 11:47 ` James Hogan
2017-07-24 11:47 ` James Hogan
2017-07-21 14:09 ` [PATCH v3 14/16] MIPS: math-emu: <MADDF|MSUBF>.S: Fix accuracy (32-bit case) Aleksandar Markovic
2017-07-21 14:09 ` [PATCH v3 15/16] MIPS: math-emu: <MADDF|MSUBF>.D: Fix accuracy (64-bit case) Aleksandar Markovic
2017-07-21 14:09 ` [PATCH v3 16/16] MIPS: math-emu: <MADDF|MSUBF>.<D|S>: Clean up maddf_flags enumeration Aleksandar Markovic
2017-07-24 12:06 ` James Hogan
2017-07-24 12:06 ` James Hogan
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