On Fri, Oct 06, 2023 at 10:18:08AM -0500, Eric Blake wrote:
> Use an array of characters instead of strings for less .data storage.
> Merge the loop conditional for fewer lines of code.
>
> Signed-off-by: Eric Blake
> ---
> common/include/human-size.h | 14 ++
> 1 file changed, 6 insertions(+), 8 deletions(-)
>
> diff --git a/common/include/human-size.h b/common/include/human-size.h
> index 47729c3c..8b1e0132 100644
> --- a/common/include/human-size.h
> +++ b/common/include/human-size.h
> @@ -159,7 +159,7 @@ human_size_parse (const char *str,
> static inline char *
> human_size (char *buf, uint64_t bytes, bool *human)
> {
> - static const char ext[][2] = { "E", "P", "T", "G", "M", "K", "" };
> + static const char ext[] = "EPTGMK";
>size_t i;
>
>if (buf == NULL) {
> @@ -170,18 +170,16 @@ human_size (char *buf, uint64_t bytes, bool *human)
>
>/* Work out which extension to use, if any. */
>i = 6;
> - if (bytes != 0) {
> -while ((bytes & 1023) == 0) {
> - bytes >>= 10;
> - i--;
> -}
> + while (bytes && (bytes & 1023) == 0) {
> +bytes >>= 10;
> +i--;
>}
>
>/* Set the flag to true if we're going to add a human-readable extension.
> */
>if (human)
> -*human = ext[i][0] != '\0';
> +*human = ext[i] != '\0';
>
> - snprintf (buf, HUMAN_SIZE_LONGEST, "%" PRIu64 "%s", bytes, ext[i]);
> + snprintf (buf, HUMAN_SIZE_LONGEST, "%" PRIu64 "%.1s", bytes, [i]);
>return buf;
> }
Reviewed-by: Richard W.M. Jones
--
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