You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
? (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 type or expression 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
(including the terminating '\0') and returning number of
characters written. If S is NULL, nothing will be written
anywhere, so to determine how many characters would be
- written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */
+ written, use NULL for S and (size_t) -1 for MAXSIZE. */
size_t
my_strftime (CHAR_T *s, size_t maxsize, const CHAR_T *format,
const struct tm *tp extra_args_spec LOCALE_PARAM_PROTO)
{
/* The relevant information is available only via the
underlying strftime implementation, so use that. */
- char ufmt[4];
+ char ufmt[5];
char *u = ufmt;
char ubuf[1024]; /* enough for any single format in practice */
size_t len;
size_t strftime ();
# endif
+ /* The space helps distinguish strftime failure from empty
+ output. */
+ *u++ = ' ';
*u++ = '%';
if (modifier != 0)
*u++ = modifier;
*u++ = format_char;
*u = '\0';
len = strftime (ubuf, sizeof ubuf, ufmt, tp);
- if (len == 0 && ubuf[0] != '\0')
- return 0;
- cpy (len, ubuf);
+ if (len != 0)
+ cpy (len - 1, ubuf + 1);
}
break;
#endif