diff options
Diffstat (limited to 'lib/strftime.c')
| -rw-r--r-- | lib/strftime.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/lib/strftime.c b/lib/strftime.c index 6d742f265..8085a5992 100644 --- a/lib/strftime.c +++ b/lib/strftime.c @@ -120,15 +120,12 @@ extern char *tzname[]; ? (a) >> (b) \ : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0)) -#define TYPE_SIGNED(t) ((t) -1 < 0) - -/* Bound on length of the string representing an integer value of type t. - Subtract one for the sign bit if t is signed; - 302 / 1000 is log10 (2) rounded up; - add one for integer division truncation; - add one more for a minus sign if t is signed. */ +/* Bound on length of the string representing an integer value or type T. + Subtract 1 for the sign bit if t is signed; log10 (2.0) < 146/485; + add 1 for integer division truncation; add 1 more for a minus sign + if needed. */ #define INT_STRLEN_BOUND(t) \ - ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t)) + ((sizeof (t) * CHAR_BIT - 1) * 146 / 485 + 2) #define TM_YEAR_BASE 1900 |