[dpdk-dev] [PATCH 1/2] eal: add macros to align value to multiple
Ananyev, Konstantin
konstantin.ananyev at intel.com
Wed Mar 14 11:42:54 CET 2018
Hi Pavan,
>
> Add macros to align given value to the multiple of the supplied
> integer.
>
> Signed-off-by: Pavan Nikhilesh <pbhagavatula at caviumnetworks.com>
> ---
>
> Common code needed for OcteonTx event timer device.
>
> lib/librte_eal/common/include/rte_common.h | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h
> index c7803e41c..2052b5300 100644
> --- a/lib/librte_eal/common/include/rte_common.h
> +++ b/lib/librte_eal/common/include/rte_common.h
> @@ -190,6 +190,22 @@ static void __attribute__((constructor(prio), used)) func(void)
> */
> #define RTE_ALIGN(val, align) RTE_ALIGN_CEIL(val, align)
>
> +/**
> + * Macro to align a value to the multiple of given value. The resultant
> + * value will be of the same type as the first parameter and will be no lower
> + * than the first parameter.
> + */
> +#define RTE_ALIGN_MUL_CEIL(v, mul) \
> + (((v + (typeof(v)) mul - 1) / ((typeof(v)) mul)) * (typeof(v))mul)
I think you need to add braces around mul:
(((v + (typeof(v))(mul) - 1) / ((typeof(v))(mul))) * (typeof(v))(mul))
Same above.
Konstantin
> +
> +/**
> + * Macro to align a value to the multiple of given value. The resultant
> + * value will be of the same type as the first parameter and will be no higher
> + * than the first parameter.
> + */
> +#define RTE_ALIGN_MUL_FLOOR(v, mul) \
> + ((v / ((typeof(v)) mul)) * (typeof(v))mul)
> +
> /**
> * Checks if a pointer is aligned to a given power-of-two value
> *
> --
> 2.16.2
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