Re: [Qemu-devel] [PATCH v1 15/19] fpu/softfloat: re-factor float to int/uint

[Richard Henderson]

On 12/11/2017 04:57 AM, Alex Bennée wrote:
> +        }
> +        if (p.exp < DECOMPOSED_BINARY_POINT) {
> +            return p.frac >> (DECOMPOSED_BINARY_POINT - p.exp);
> +        } else if (p.exp < 64) {
> +            return p.frac << (p.exp - DECOMPOSED_BINARY_POINT);
> +        } else {
> +            return UINT64_MAX;
> +        }
> +    default:
> +        g_assert_not_reached();
> +    }
> +}
> +
> +static uint16_t uint16_pack_decomposed(decomposed_parts p, float_status *s)
> +{
> +    uint64_t r = uint64_pack_decomposed(p, s);
> +    return r > UINT16_MAX ? UINT16_MAX : r;
> +}
> +
> +static uint32_t uint32_pack_decomposed(decomposed_parts p, float_status *s)
> +{
> +    uint64_t r = uint64_pack_decomposed(p, s);
> +    return r > UINT32_MAX ? UINT32_MAX : r;
> +}

Missing float_flag_invalid for unsigned overflows.


r~