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From: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
To: Daniel Cederman <cederman@gaisler.com>, libc-alpha@sourceware.org
Cc: daniel@gaisler.com, andreas@gaisler.com
Subject: Re: [PATCH v3] sparc: Force calculation that raises exception
Date: Wed, 17 Jan 2024 08:27:33 -0300	[thread overview]
Message-ID: <029c229b-b112-417a-a6df-8a156d545cb5@linaro.org> (raw)
In-Reply-To: <20240116151641.3583965-1-cederman@gaisler.com>



On 16/01/24 12:16, Daniel Cederman wrote:
> Use the math_force_eval() macro to force the calculation to complete and
> raise the exception.
> 
> With this change the math/test-fenv test pass.
> 
> Signed-off-by: Daniel Cederman <cederman@gaisler.com>

LGTM, thanks.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

> ---
>  sysdeps/sparc/fpu/fraiseexcpt.c | 11 ++++++-----
>  1 file changed, 6 insertions(+), 5 deletions(-)
> 
> diff --git a/sysdeps/sparc/fpu/fraiseexcpt.c b/sysdeps/sparc/fpu/fraiseexcpt.c
> index 26a7720ec9..642666c12a 100644
> --- a/sysdeps/sparc/fpu/fraiseexcpt.c
> +++ b/sysdeps/sparc/fpu/fraiseexcpt.c
> @@ -20,6 +20,7 @@
>  #include <float.h>
>  #include <math.h>
>  #include <shlib-compat.h>
> +#include <math-barriers.h>
>  
>  int
>  __feraiseexcept (int excepts)
> @@ -42,7 +43,7 @@ __feraiseexcept (int excepts)
>        /* One example of an invalid operation is 0/0.  */
>        __asm ("" : "=e" (d) : "0" (c.zero));
>        d /= c.zero;
> -      __asm __volatile ("" : : "e" (d));
> +      math_force_eval (d);
>      }
>  
>    /* Next: division by zero.  */
> @@ -50,7 +51,7 @@ __feraiseexcept (int excepts)
>      {
>        __asm ("" : "=e" (d) : "0" (c.one));
>        d /= c.zero;
> -      __asm __volatile ("" : : "e" (d));
> +      math_force_eval (d);
>      }
>  
>    /* Next: overflow.  */
> @@ -58,7 +59,7 @@ __feraiseexcept (int excepts)
>      {
>        __asm ("" : "=e" (d) : "0" (c.max));
>        d *= d;
> -      __asm __volatile ("" : : "e" (d));
> +      math_force_eval (d);
>      }
>  
>    /* Next: underflow.  */
> @@ -66,7 +67,7 @@ __feraiseexcept (int excepts)
>      {
>        __asm ("" : "=e" (d) : "0" (c.min));
>        d *= d;
> -      __asm __volatile ("" : : "e" (d));
> +      math_force_eval (d);
>      }
>  
>    /* Last: inexact.  */
> @@ -74,7 +75,7 @@ __feraiseexcept (int excepts)
>      {
>        __asm ("" : "=e" (d) : "0" (c.one));
>        d /= c.pi;
> -      __asm __volatile ("" : : "e" (d));
> +      math_force_eval (d);
>      }
>  
>    /* Success.  */

      reply	other threads:[~2024-01-17 11:27 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-16 15:16 Daniel Cederman
2024-01-17 11:27 ` Adhemerval Zanella Netto [this message]

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