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| author | Lennart Poettering <lennart@poettering.net> | 2015-02-02 21:28:19 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2015-02-02 21:28:19 +0100 |
| commit | b7ce6b592d8908d378904323a4a6670bfe0b7ab1 (patch) | |
| tree | 01b139e18460f1de726fab053ea540fb0998a4e4 /src/shared/macro.h | |
| parent | 6e1bf7ab998e30b23202192b5b47c119e7a3697d (diff) | |
macro: document that DECIMAL_STR_MAX contains space for the trailing NUL byte
Diffstat (limited to 'src/shared/macro.h')
| -rw-r--r-- | src/shared/macro.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/shared/macro.h b/src/shared/macro.h index e88630fa04..7f89951d62 100644 --- a/src/shared/macro.h +++ b/src/shared/macro.h @@ -383,7 +383,8 @@ do { \ /* Returns the number of chars needed to format variables of the * specified type as a decimal string. Adds in extra space for a - * negative '-' prefix. */ + * negative '-' prefix (hence works correctly on signed + * types). Includes space for the trailing NUL. */ #define DECIMAL_STR_MAX(type) \ (2+(sizeof(type) <= 1 ? 3 : \ sizeof(type) <= 2 ? 5 : \ |