update CLib

git-svn-id: svn://kolibrios.org@614 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-08-28 10:31:46 +00:00
parent 52facee6d5
commit 3be3768ce0
98 changed files with 9908 additions and 0 deletions
--- a/watcom/trunk/clib/time/locmktim.c
+++ b/watcom/trunk/clib/time/locmktim.c
@@ -0,0 +1,103 @@
+/****************************************************************************
+*
+*                            Open Watcom Project
+*
+*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
+*
+*  ========================================================================
+*
+*    This file contains Original Code and/or Modifications of Original
+*    Code as defined in and that are subject to the Sybase Open Watcom
+*    Public License version 1.0 (the 'License'). You may not use this file
+*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
+*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
+*    provided with the Original Code and Modifications, and is also
+*    available at www.sybase.com/developer/opensource.
+*
+*    The Original Code and all software distributed under the License are
+*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
+*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
+*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
+*    NON-INFRINGEMENT. Please see the License for the specific language
+*    governing rights and limitations under the License.
+*
+*  ========================================================================
+*
+* Description:  mktime() without timezone and struct tm fields adjustment.
+*               used by mktime() and DOS clock()
+*
+****************************************************************************/
+
+#include "variety.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <limits.h>
+#include "rtdata.h"
+#include "timedata.h"
+
+#define MONTH_YR        ( 12 )
+#define DAY_YR          ( 365 )
+#define HOUR_YR         ( DAY_YR * 24 )
+#define MINUTE_YR       ( HOUR_YR * 60 )
+#define SECOND_YR       ( MINUTE_YR * 60 )
+#define __MONTHS        ( INT_MIN / MONTH_YR )
+#define __DAYS          ( INT_MIN / DAY_YR )
+
+// these ones can underflow in 16bit environments,
+// so check the relative values first
+#if ( HOUR_YR ) < ( INT_MAX / 60 )
+ #define __MINUTES      ( INT_MIN / MINUTE_YR )
+ #if ( MINUTE_YR ) < ( INT_MAX / 60 )
+  #define __SECONDS     ( INT_MIN / SECOND_YR )
+ #else
+  #define __SECONDS     ( 0 )
+ #endif
+#else
+ #define __MINUTES      ( 0 )
+ #define __SECONDS      ( 0 )
+#endif
+
+#define SMALLEST_YEAR_VALUE ( __MONTHS + __DAYS + __MINUTES + __SECONDS )
+
+time_t __local_mktime( const struct tm *t, long *pdays, long *pseconds )
+{
+    int         month;
+    int         year;
+    long        days;
+    long        seconds;
+    short const *month_start;
+
+    month_start = __diyr;
+    month = t->tm_mon % 12; /* put tm_mon into range */
+    year = t->tm_year;
+    if( year < SMALLEST_YEAR_VALUE )
+        return( ( time_t ) -1 );
+    year += t->tm_mon / 12;
+    while( month < 0 )
+        --year, month += 12;
+    if( year < 0 )
+        return( ( time_t ) -1 );
+    if( __leapyear( ( unsigned ) ( year + 1900 ) ) )
+        month_start = __dilyr;
+    days = year * 365L                   /* # of days in the years */
+        + ( ( year + 3 ) / 4 )           /* add # of leap years before year */
+        - ( ( year + 99 ) / 100 )        /* sub # of leap centuries */
+        + ( ( year + 399 - 100 ) / 400 ) /* add # of leap 4 centuries */
+                                         /* adjust for 1900 offset */
+                                         /* note: -100 == 300 (mod 400) */
+        + month_start[month]             /* # of days to 1st of month*/
+        + t->tm_mday - 1;                /* day of the month */
+    seconds = ( ( ( long ) ( t->tm_hour ) ) *60L + ( long ) ( t->tm_min ) ) *60L + t->tm_sec;
+                                         /* seconds needs to be positive for __brktime */
+    while( seconds < 0 )
+        days -= 1, seconds += ( long ) SECONDS_PER_DAY;
+    while( seconds >= ( long ) SECONDS_PER_DAY )
+        days += 1, seconds -= ( long ) SECONDS_PER_DAY;
+    if( days < ( DAYS_FROM_1900_TO_1970 - 1 ) )
+        return( ( time_t ) -1 );
+    if ( pdays ) *pdays = days;
+    if ( pseconds ) *pseconds = seconds;
+    return( seconds + ( days - DAYS_FROM_1900_TO_1970 ) * ( long ) SECONDS_PER_DAY );
+}