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authorRoland McGrath <roland@gnu.org>1995-09-18 19:00:32 +0000
committerRoland McGrath <roland@gnu.org>1995-09-18 19:00:32 +0000
commitc22164805d6fed3359e7f606c02974ae53d5e3de (patch)
tree90275c9f8c053c60c4a88d28f8692e67d2dbbefa /time/offtime.c
parentaa9109070f2919ab519de474e00274c9fff5dcff (diff)
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Mon Sep 18 12:39:22 1995 Paul Eggert <eggert@twinsun.com>
* mktime.c (localtime_r): Add substitute if the system doesn't provide one. Mon Sep 18 14:39:20 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * time/gmtime.c (gmtime_r): Define as weak alias. * time/localtime.c (localtime_r): Define as weak alias. * time/time.h [__USE_REENTRANT] (gmtime_r, localtime_r): Declare them. * errno.h: Only define _ERRNO_H #ifndef __need_Emath. #undef __need_Emath after including errnos.h. [_ERRNO_H]: Protect decls with this. Sun Sep 17 08:22:12 1995 Paul Eggert <eggert@twinsun.com> Fix mktime so that it does not write over localtime's returned value. * localtime.c (__localtime_r): New function, with extra arg specifying where to store result. (localtime): Use it. (_tmbuf): New var. * gmtime.c (__gmtime_r, gmtime, _tmbuf): Likewise. * mktime.c (__mktime_internal): Conversion function is now __localtime_r style, not localtime style. (mktime): Pass __localtime_r, not localtime. * timegm.c (timegm): Pass __gmtime_r, not gmtime. * offtime.c (__offtime): New arg specifying where to store result. * time.h (__mktime_internal, __offtime): Adjust decls accordingly. (__gmtime_r, __localtime_r): New decls. * time/localtime.c: <stddef.h>, <ctype.h>, <stdio.h>, <stdlib.h>, <string.h>: Remove includes. <errno.h>: Add include. * time/mktime.c, time/time.h, time/timegm.c (__mktime_internal): Renamed from _mktime_internal to avoid namespace pollution. * time/gmtime.c: Clear tm_isdst. * misc/efgcvt_r.c (ecvt_r, fcvt_r): Last arg is size_t, not int. * stdlib/stdlib.h (ecvt_r, fcvt_r): Fix type of last arg: make it size_t. * sysdeps/mach/hurd/fpathconf.c: Call __io_pathconf instead of __file_pathconf. * sysdeps/mach/hurd/pathconf.c: Likewise.
Diffstat (limited to 'time/offtime.c')
-rw-r--r--time/offtime.c38
1 files changed, 17 insertions, 21 deletions
diff --git a/time/offtime.c b/time/offtime.c
index a392a47e89..e588c4c66b 100644
--- a/time/offtime.c
+++ b/time/offtime.c
@@ -26,19 +26,17 @@ extern CONST unsigned short int __mon_lengths[2][12];
#define SECS_PER_HOUR (60 * 60)
#define SECS_PER_DAY (SECS_PER_HOUR * 24)
-/* Returns the `struct tm' representation of *T,
- offset OFFSET seconds east of UCT. */
-struct tm *
-DEFUN(__offtime, (t, offset), CONST time_t *t AND long int offset)
+/* Compute the `struct tm' representation of *T,
+ offset OFFSET seconds east of UTC,
+ and store year, yday, mon, mday, wday, hour, min, sec into *TP. */
+void
+DEFUN(__offtime, (t, offset, tp),
+ CONST time_t *t AND long int offset AND struct tm *tp)
{
- static struct tm tbuf;
register long int days, rem;
register int y;
register CONST unsigned short int *ip;
- if (t == NULL)
- return NULL;
-
days = *t / SECS_PER_DAY;
rem = *t % SECS_PER_DAY;
rem += offset;
@@ -52,14 +50,14 @@ DEFUN(__offtime, (t, offset), CONST time_t *t AND long int offset)
rem -= SECS_PER_DAY;
++days;
}
- tbuf.tm_hour = rem / SECS_PER_HOUR;
+ tp->tm_hour = rem / SECS_PER_HOUR;
rem %= SECS_PER_HOUR;
- tbuf.tm_min = rem / 60;
- tbuf.tm_sec = rem % 60;
+ tp->tm_min = rem / 60;
+ tp->tm_sec = rem % 60;
/* January 1, 1970 was a Thursday. */
- tbuf.tm_wday = (4 + days) % 7;
- if (tbuf.tm_wday < 0)
- tbuf.tm_wday += 7;
+ tp->tm_wday = (4 + days) % 7;
+ if (tp->tm_wday < 0)
+ tp->tm_wday += 7;
y = 1970;
while (days >= (rem = __isleap(y) ? 366 : 365))
{
@@ -71,14 +69,12 @@ DEFUN(__offtime, (t, offset), CONST time_t *t AND long int offset)
--y;
days += __isleap(y) ? 366 : 365;
}
- tbuf.tm_year = y - 1900;
- tbuf.tm_yday = days;
+ tp->tm_year = y - 1900;
+ tp->tm_yday = days;
ip = __mon_lengths[__isleap(y)];
for (y = 0; days >= ip[y]; ++y)
days -= ip[y];
- tbuf.tm_mon = y;
- tbuf.tm_mday = days + 1;
- tbuf.tm_isdst = -1;
-
- return &tbuf;
+ tp->tm_mon = y;
+ tp->tm_mday = days + 1;
+ tp->tm_isdst = -1;
}