[vlc-devel] [PATCH 1/3] vlc_common.h: add helpers to get the upper rounded value of integer divisions

[Rémi Denis-Courmont]

On March 17, 2017 4:36:08 PM GMT+08:00, Steve Lhomme <robux4 at videolabs.io> wrote:
>---
> include/vlc_common.h | 5 +++++
> 1 file changed, 5 insertions(+)
>
>diff --git a/include/vlc_common.h b/include/vlc_common.h
>index 6a75753dbf..b72dbfe689 100644
>--- a/include/vlc_common.h
>+++ b/include/vlc_common.h
>@@ -507,6 +507,11 @@ struct vlc_common_members
> /* clip v in [min, max] */
> #define VLC_CLIP(v, min, max)    __MIN(__MAX((v), (min)), (max))
> 
>+/* upper rounded value of the integer division */
>+#define VLC_UPPER_DIV(v, div)     (((v) + (div) - 1) / (div))
>+/* upper modulo value of the integer */
>+#define VLC_UPPER_MODULO(v, mod)  (VLC_UPPER_DIV(v, mod) * mod)
>+
> VLC_USED
> static inline int64_t GCD ( int64_t a, int64_t b )
> {
>-- 
>2.11.1
>
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I don't like expansion-unsafe functional macros, TBH. They've bitten too many asses too many times, so to speak.
-- 
Rémi Denis-Courmont