Re: [PATCH 1/8] osdep: add DIV_ROUND_CLOSEST

On Thu, 30 Jul 2026 at 00:13, Titus Rwantare <[email protected]> wrote:
>
> This is taken from linux/include/uapi/linux/const.h to match the driver
> behaviour when reading sensor values.
>
> Signed-off-by: Titus Rwantare <[email protected]>
> ---
>  include/qemu/osdep.h | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
>
> diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
> index 1ec5b42230..08f87c9d61 100644
> --- a/include/qemu/osdep.h
> +++ b/include/qemu/osdep.h
> @@ -522,6 +522,19 @@ void QEMU_ERROR("code path is reachable")
>  #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
>  #endif
>
> +#ifndef DIV_ROUND_CLOSEST
> +#define DIV_ROUND_CLOSEST(n, d) \
> +({ \
> +    typeof(n) __n = n; \
> +    typeof(d) __d = d; \
> +    (((typeof(n))-1) > 0 || \
> +     ((typeof(d))-1) > 0 || \
> +     (((__n) > 0) == ((__d) > 0))) ? \
> +        (((__n) + ((__d) / 2)) / (__d)) : \
> +        (((__n) - ((__d) / 2)) / (__d)); \
> +})
> +#endif

This is still missing the documentation comment that the kernel's
version has. (We could also mention in that comment that this is
from the kernel and so GPL-2-only.)

-- PMM