diff options
Diffstat (limited to 'lib/nstrftime.c')
| -rw-r--r-- | lib/nstrftime.c | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/lib/nstrftime.c b/lib/nstrftime.c index 667c7ddc56e..28b539dc2f2 100644 --- a/lib/nstrftime.c +++ b/lib/nstrftime.c @@ -68,16 +68,9 @@ extern char *tzname[]; #include <string.h> #include <stdbool.h> +#include "attribute.h" #include <intprops.h> -#ifndef FALLTHROUGH -# if __GNUC__ < 7 -# define FALLTHROUGH ((void) 0) -# else -# define FALLTHROUGH __attribute__ ((__fallthrough__)) -# endif -#endif - #ifdef COMPILE_WIDE # include <endian.h> # define CHAR_T wchar_t @@ -113,7 +106,7 @@ extern char *tzname[]; #define SHR(a, b) \ (-1 >> 1 == -1 \ ? (a) >> (b) \ - : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0)) + : ((a) + ((a) < 0)) / (1 << (b)) - ((a) < 0)) #define TM_YEAR_BASE 1900 @@ -348,8 +341,8 @@ tm_diff (const struct tm *a, const struct tm *b) but it's OK to assume that A and B are close to each other. */ int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3); int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3); - int a100 = a4 / 25 - (a4 % 25 < 0); - int b100 = b4 / 25 - (b4 % 25 < 0); + int a100 = (a4 + (a4 < 0)) / 25 - (a4 < 0); + int b100 = (b4 + (b4 < 0)) / 25 - (b4 < 0); int a400 = SHR (a100, 2); int b400 = SHR (b100, 2); int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); @@ -927,9 +920,11 @@ __strftime_internal (STREAM_OR_CHAR_T *s, STRFTIME_ARG (size_t maxsize) } { - int century = tp->tm_year / 100 + TM_YEAR_BASE / 100; - century -= tp->tm_year % 100 < 0 && 0 < century; - DO_YEARISH (2, tp->tm_year < - TM_YEAR_BASE, century); + bool negative_year = tp->tm_year < - TM_YEAR_BASE; + bool zero_thru_1899 = !negative_year & (tp->tm_year < 0); + int century = ((tp->tm_year - 99 * zero_thru_1899) / 100 + + TM_YEAR_BASE / 100); + DO_YEARISH (2, negative_year, century); } case L_('x'): @@ -1138,8 +1133,8 @@ __strftime_internal (STREAM_OR_CHAR_T *s, STRFTIME_ARG (size_t maxsize) int ndigs = ns_digits; while (width < ndigs || (1 < ndigs && n % 10 == 0)) ndigs--, n /= 10; - for (int i = ndigs; 0 < i; i--) - buf[i - 1] = n % 10 + L_('0'), n /= 10; + for (int j = ndigs; 0 < j; j--) + buf[j - 1] = n % 10 + L_('0'), n /= 10; if (!pad) pad = L_('0'); width_cpy (0, ndigs, buf); |