Re: [Qemu-devel] [PATCH v2 4/7] softfloat: define floatx80_round()

[Laurent Vivier <laurent@vivier.eu>]

Aurélien or Peter, could you ACK this one?

Thanks,
Laurent

Le 27/06/2017 à 00:03, Laurent Vivier a écrit :
> Add a function to round a floatx80 to the defined precision
> (floatx80_rounding_precision)
> 
> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
> Reviewed-by: Richard Henderson <rth@twiddle.net>
> ---
>  fpu/softfloat.c         | 15 +++++++++++++++
>  include/fpu/softfloat.h |  1 +
>  2 files changed, 16 insertions(+)
> 
> diff --git a/fpu/softfloat.c b/fpu/softfloat.c
> index 7af14e2..e9bf359 100644
> --- a/fpu/softfloat.c
> +++ b/fpu/softfloat.c
> @@ -5086,6 +5086,21 @@ float128 floatx80_to_float128(floatx80 a, float_status *status)
>  }
>  
>  /*----------------------------------------------------------------------------
> +| Rounds the extended double-precision floating-point value `a'
> +| and returns the result as an extended double-precision floating-point
> +| value.  The operation is performed according to the IEC/IEEE Standard for
> +| Binary Floating-Point Arithmetic.
> +*----------------------------------------------------------------------------*/
> +
> +floatx80 floatx80_round(floatx80 a, float_status *status)
> +{
> +    return roundAndPackFloatx80(status->floatx80_rounding_precision,
> +                                extractFloatx80Sign(a),
> +                                extractFloatx80Exp(a),
> +                                extractFloatx80Frac(a), 0, status);
> +}
> +
> +/*----------------------------------------------------------------------------
>  | Rounds the extended double-precision floating-point value `a' to an integer,
>  | and returns the result as an extended quadruple-precision floating-point
>  | value.  The operation is performed according to the IEC/IEEE Standard for
> diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
> index f1288ef..d9689ec 100644
> --- a/include/fpu/softfloat.h
> +++ b/include/fpu/softfloat.h
> @@ -621,6 +621,7 @@ float128 floatx80_to_float128(floatx80, float_status *status);
>  /*----------------------------------------------------------------------------
>  | Software IEC/IEEE extended double-precision operations.
>  *----------------------------------------------------------------------------*/
> +floatx80 floatx80_round(floatx80 a, float_status *status);
>  floatx80 floatx80_round_to_int(floatx80, float_status *status);
>  floatx80 floatx80_add(floatx80, floatx80, float_status *status);
>  floatx80 floatx80_sub(floatx80, floatx80, float_status *status);
>