[Libguestfs] [PATCH nbdkit v3 1/3] common: isaligned: Use a macro instead of relying on implicit truncation.
Nir Soffer
nsoffer at redhat.com
Mon Sep 17 21:51:34 UTC 2018
On Tue, Sep 18, 2018 at 12:27 AM Richard W.M. Jones <rjones at redhat.com>
wrote:
> ---
> common/include/isaligned.h | 11 +++++------
> plugins/file/file.c | 4 ++--
> plugins/vddk/vddk.c | 8 ++++----
> 3 files changed, 11 insertions(+), 12 deletions(-)
>
> diff --git a/common/include/isaligned.h b/common/include/isaligned.h
> index e693820..81ce8a7 100644
> --- a/common/include/isaligned.h
> +++ b/common/include/isaligned.h
> @@ -36,16 +36,15 @@
>
> #include <assert.h>
> #include <stdbool.h>
> +#include <stdint.h>
>
With the macro, stdint.h and stdbool.h are not needed.
>
> #include "ispowerof2.h"
>
> /* Return true if size is a multiple of align. align must be power of 2.
> */
> -static inline bool
> -is_aligned (unsigned int size, unsigned int align)
> -{
> - assert (is_power_of_2 (align));
> - return !(size & (align - 1));
> -}
> +#define IS_ALIGNED(size, align) ({ \
> + assert (is_power_of_2 ((align))); \
> + !((size) & ((align) - 1)); \
> +})
>
> #endif /* NBDKIT_ISALIGNED_H */
> ...
Nir
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