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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-08-02 08:43:31 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-08-02 08:43:31 +0200
commitdaf17154bf13139d9375f48525d19d6aaba08155 (patch)
treee3c08b6c49dc8a8e83f03327591310546675b43d /xbase64/xbdate.cpp
Imported Upstream version 3.1.2upstream/3.1.2
Diffstat (limited to 'xbase64/xbdate.cpp')
-rwxr-xr-xxbase64/xbdate.cpp851
1 files changed, 851 insertions, 0 deletions
diff --git a/xbase64/xbdate.cpp b/xbase64/xbdate.cpp
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--- /dev/null
+++ b/xbase64/xbdate.cpp
@@ -0,0 +1,851 @@
+/* xbdate.cpp
+
+ Xbase64 project source code
+
+ These functions are used for processing dates.
+ All functions assume a standard date format of CCYYMMDD
+ for Century,Year,Month and Day
+
+ Copyright (C) 1997,2003 Gary A Kunkel
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser 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
+
+
+ Contact:
+
+ Email:
+
+ xdb-devel@lists.sourceforge.net
+ xdb-users@lists.sourceforge.net
+
+
+ Regular Mail:
+
+ XBase Support
+ 149C South Main St
+ Keller Texas, 76248
+ USA
+
+*/
+
+#ifdef __GNU LesserG__
+ #pragma implementation "xbdate.h"
+#endif
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#ifdef __WIN32__
+#include <xbase64/xbwincfg.h>
+#else
+#include <xbase64/xbconfig.h>
+#endif
+#include <xbase64/xbase64.h>
+#include <xbase64/xbdate.h>
+//#include <xbase64/retcodes.h>
+
+/*! \file xbdate.cpp
+*/
+
+int xbDate::DaysInMonths[2][13];
+int xbDate::AggregatedDaysInMonths[2][13];
+
+#define EPOCH_MIN 100
+#define EPOCH_MAX 3000
+#define DAYS_AD(year) ((year) *365L + (year) / 4 - (year) / 100 + (year) / 400)
+
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+xbDate::xbDate( const xbString & Date8 ) {
+ if( DateIsValid( Date8 ))
+ cDate8 = Date8;
+ else
+ Sysdate();
+ SetDateTables();
+}
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+xbDate::xbDate( const char * Date8 ) {
+ if( DateIsValid( Date8 ))
+ cDate8 = Date8;
+ else
+ Sysdate(); /* if invalid date, set class to sysdate */
+ SetDateTables();
+}
+/***************************************************************/
+//! Short description.
+/*!
+*/
+xbDate::xbDate()
+{
+ Sysdate();
+ SetDateTables();
+}
+
+/***************************************************************/
+//! Destructor
+/*!
+*/
+xbDate::~xbDate()
+{
+}
+/***************************************************************/
+//! Short description.
+/*!
+*/
+void xbDate::SetDateTables() {
+ if( AggregatedDaysInMonths[1][12] != 366 ){ /* first time called ? */
+ AggregatedDaysInMonths[0][0] = 0;
+ AggregatedDaysInMonths[0][1] = 31;
+ AggregatedDaysInMonths[0][2] = 59;
+ AggregatedDaysInMonths[0][3] = 90;
+ AggregatedDaysInMonths[0][4] = 120;
+ AggregatedDaysInMonths[0][5] = 151;
+ AggregatedDaysInMonths[0][6] = 181;
+ AggregatedDaysInMonths[0][7] = 212;
+ AggregatedDaysInMonths[0][8] = 243;
+ AggregatedDaysInMonths[0][9] = 273;
+ AggregatedDaysInMonths[0][10] = 304;
+ AggregatedDaysInMonths[0][11] = 334;
+ AggregatedDaysInMonths[0][12] = 365;
+ AggregatedDaysInMonths[1][0] = 0;
+ AggregatedDaysInMonths[1][1] = 31;
+ AggregatedDaysInMonths[1][2] = 60;
+ AggregatedDaysInMonths[1][3] = 91;
+ AggregatedDaysInMonths[1][4] = 121;
+ AggregatedDaysInMonths[1][5] = 152;
+ AggregatedDaysInMonths[1][6] = 182;
+ AggregatedDaysInMonths[1][7] = 213;
+ AggregatedDaysInMonths[1][8] = 244;
+ AggregatedDaysInMonths[1][9] = 274;
+ AggregatedDaysInMonths[1][10] = 305;
+ AggregatedDaysInMonths[1][11] = 335;
+ AggregatedDaysInMonths[1][12] = 366;
+
+ DaysInMonths[0][0] = 0;
+ DaysInMonths[0][1] = 31;
+ DaysInMonths[0][2] = 28;
+ DaysInMonths[0][3] = 31;
+ DaysInMonths[0][4] = 30;
+ DaysInMonths[0][5] = 31;
+ DaysInMonths[0][6] = 30;
+ DaysInMonths[0][7] = 31;
+ DaysInMonths[0][8] = 31;
+ DaysInMonths[0][9] = 30;
+ DaysInMonths[0][10] = 31;
+ DaysInMonths[0][11] = 30;
+ DaysInMonths[0][12] = 31;
+ DaysInMonths[1][0] = 0;
+ DaysInMonths[1][1] = 31;
+ DaysInMonths[1][2] = 29;
+ DaysInMonths[1][3] = 31;
+ DaysInMonths[1][4] = 30;
+ DaysInMonths[1][5] = 31;
+ DaysInMonths[1][6] = 30;
+ DaysInMonths[1][7] = 31;
+ DaysInMonths[1][8] = 31;
+ DaysInMonths[1][9] = 30;
+ DaysInMonths[1][10] = 31;
+ DaysInMonths[1][11] = 30;
+ DaysInMonths[1][12] = 31;
+ }
+}
+
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+/* this function returns century and year from a CCYYMMDD date */
+int xbDate::CenturyOf( const char * Date8 ) const
+{
+ char Century[3];
+ Century[0] = Date8[0];
+ Century[1] = Date8[1];
+ Century[2] = 0x00;
+ return( atoi( Century ));
+}
+
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+/* this function returns century and year from a CCYYMMDD date */
+int xbDate::YearOf( const char * Date8 ) const
+{
+ char year[5];
+ year[0] = Date8[0];
+ year[1] = Date8[1];
+ year[2] = Date8[2];
+ year[3] = Date8[3];
+ year[4] = 0x00;
+ return( atoi( year ));
+}
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+/* this function returns the month from a CCYYMMDD date */
+int xbDate::MonthOf( const char * Date8 ) const
+{
+ char month[3];
+ month[0] = Date8[4];
+ month[1] = Date8[5];
+ month[2] = 0x00;
+ return( atoi( month ));
+}
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+/* this function returns TRUE if a CCYYMMDD date is a leap year*/
+
+int xbDate::IsLeapYear( const char * Date8 ) const
+{
+ int year;
+ year = YearOf( Date8 );
+ if(( year % 4 == 0 && year % 100 != 0 ) || year % 400 == 0 )
+ return 1;
+ else
+ return 0;
+}
+
+/***************************************************************/
+//! Short description.
+/*!
+ \param CalcYear
+*/
+/* this function returns TRUE if a CCYYMMDD date is a leap year*/
+
+int xbDate::CalcRollingCenturyForYear( int CalcYear ) const
+{
+ /* this routine calculates a century for a year - it uses
+ an 80/20 rolling date window to calculate the century */
+
+ xbDate d;
+ int ThisYear = YearOf( d.Sysdate() );
+ int ThisCentury = CenturyOf( d.Sysdate() );
+
+ ThisYear -= (ThisCentury * 100);
+
+ if( ThisYear < 80 && CalcYear < (ThisYear+20) )
+ return ThisCentury;
+
+ else if( ThisYear >= 80 &&
+ CalcYear < ThisYear &&
+ CalcYear >= (ThisYear-80))
+ return ThisCentury;
+
+ else
+ return ThisCentury - 1;
+}
+/***************************************************************/
+//! Short description.
+/*!
+ \param Format
+ \param Date8
+*/
+/* this function returns the "day of" from a CCYYMMDD date */
+
+/* format = XB_FMT_WEEK Number of day in WEEK 0-6 ( Sun - Sat )
+ format = XB_FMT_MONTH Number of day in MONTH 1-31
+ format = XB_FMT_YEAR Number of day in YEAR 1-366
+*/
+
+int xbDate::DayOf( int Format, const char * Date8 ) const
+{
+ char day[3];
+ int iday, imonth, iyear, iday2;
+
+ /* check for valid format switch */
+
+ if( Format!=XB_FMT_WEEK && Format!=XB_FMT_MONTH && Format!=XB_FMT_YEAR )
+ return XB_INVALID_OPTION;
+
+ if( Format == XB_FMT_WEEK )
+ {
+ iday = DayOf( XB_FMT_MONTH, Date8 );
+ imonth = MonthOf( Date8 );
+ iyear = YearOf ( Date8 );
+
+ /* The following formula uses Zeller's Congruence to determine
+ the day of the week */
+
+ if( imonth > 2 ) /* init to February */
+ imonth -= 2;
+ else
+ {
+ imonth += 10;
+ iyear--;
+ }
+
+ iday2 = ((13 * imonth - 1) / 5) +iday + ( iyear % 100 ) +
+ (( iyear % 100 ) / 4) + ((iyear /100 ) / 4 ) - 2 *
+ ( iyear / 100 ) + 77 ;
+
+ return( iday2 - 7 * ( iday2 / 7 ));
+ }
+
+ else if( Format == XB_FMT_MONTH )
+ {
+ day[0] = Date8[6];
+ day[1] = Date8[7];
+ day[2] = 0x00;
+ return( atoi( day ));
+ }
+ else
+ return(
+ AggregatedDaysInMonths[IsLeapYear(Date8)][MonthOf(Date8)-1]+
+ DayOf(XB_FMT_MONTH, Date8));
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+/* this method sets the class date & returns the system date */
+
+xbString& xbDate::Sysdate()
+{
+ char dt[9];
+ time_t timer;
+ struct tm *tblock;
+ timer = time( NULL );
+ tblock = localtime( &timer );
+ tblock->tm_year += 1900;
+ tblock->tm_mon++;
+ sprintf( dt,"%4d%02d%02d",tblock->tm_year,tblock->tm_mon,tblock->tm_mday );
+ dt[8] = 0x00;
+ cDate8 = dt;
+ return cDate8;
+}
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+/* this function checks a date for validity - returns 1 if OK */
+
+int xbDate::DateIsValid( const char * Date8 ) const
+{
+ int year, month, day;
+
+ if(!isdigit( Date8[0] ) || !isdigit( Date8[1] ) || !isdigit( Date8[2] ) ||
+ !isdigit( Date8[3] ) || !isdigit( Date8[4] ) || !isdigit( Date8[5] ) ||
+ !isdigit( Date8[6] ) || !isdigit( Date8[7] ) )
+ return 0;
+
+ year = YearOf ( Date8 );
+ month = MonthOf( Date8 );
+ day = DayOf ( XB_FMT_MONTH, Date8 );
+
+ /* check the basics */
+ if( year == 0 || month < 1 || month > 12 || day < 1 || day > 31 )
+ return 0;
+
+ /* April, June, September and November have 30 days */
+ if(( month==4 || month==6 || month==9 || month==11 )&& day > 30 )
+ return 0;
+
+ /* check for February with leap year */
+ if( month == 2 )
+ if( IsLeapYear( Date8 ))
+ {
+ if( day > 29 )
+ return 0;
+ }
+ else
+ {
+ if( day > 28 )
+ return 0;
+ }
+ return 1;
+}
+
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+int xbDate::SetDate( const char * Date8 )
+{
+ if( DateIsValid( Date8 ))
+ {
+ cDate8 = Date8;
+ return 1;
+ }
+ return 0;
+}
+
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+/* this returns the number of days since 1/1/EPOCH_MIN */
+long xbDate::JulianDays( const char * Date8 ) const
+{
+ int year = YearOf( Date8 );
+ if(( year < EPOCH_MIN ) || (year >= EPOCH_MAX))
+ return XB_INVALID_DATE;
+
+ long days = 0;
+ for (long y = EPOCH_MIN; y < year; y++ )
+ days += 365 + ( ( ( y%4==0 && y%100!=0 ) || y%400==0 ) ? 1 : 0 );
+
+ days += (long) DayOf( XB_FMT_YEAR, Date8 ) -1;
+
+ return days;
+}
+/***************************************************************/
+//! Short description.
+/*!
+ \param days
+*/
+/* this function does the opposite of the JulianDays function */
+/* it converts a julian based date into a Date8 format */
+
+xbString& xbDate::JulToDate8( long days )
+{
+ char Date8[9];
+ int year, leap, month;
+
+ year = EPOCH_MIN;
+ leap = 0; /* EPOCH_MIN of 100 is not a leap year */
+
+/* this while loop calculates the year of the date by incrementing
+ the years counter as it decrements the days counter */
+
+ while( days > ( 364+leap ))
+ {
+ days -= 365+leap;
+ year++;
+ if(( year % 4 == 0 && year % 100 != 0 ) || year % 400 == 0 )
+ leap = 1;
+ else
+ leap = 0;
+ }
+
+/* this for loop calculates the month and day of the date by
+ comparing the number of days remaining to one of the tables */
+
+ for( month = 12; month >= 1; month-- )
+ if( days >= (long)AggregatedDaysInMonths[leap][month] ) {
+ days -= AggregatedDaysInMonths[leap][month];
+ break;
+ }
+
+ sprintf( Date8, "%4d%02d%02ld", year, month+1, days+1 );
+
+ Date8[8] = 0x00;
+ cDate8 = Date8;
+ return cDate8;
+}
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+/* this routine returns a pointer to the day of the week(Sun-Sat)*/
+xbString& xbDate::CharDayOf( const char * Date8 )
+{
+ struct tm tblock;
+ char buf[25];
+
+ tblock.tm_year = YearOf( Date8 ) - 1900;
+ tblock.tm_mon = MonthOf( Date8 ) - 1;
+ tblock.tm_mday = DayOf( XB_FMT_MONTH, Date8 );
+ tblock.tm_hour = 0;
+ tblock.tm_min = 0;
+ tblock.tm_sec = 1;
+ tblock.tm_isdst = -1;
+ if( mktime( &tblock ) == -1 )
+ fDate = "????";
+ else
+ {
+ strftime( buf, 25, "%A", &tblock );
+ fDate = buf;
+ }
+ return fDate;
+}
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+/* this routine returns a pointer to the month */
+
+xbString& xbDate::CharMonthOf( const char * Date8 )
+{
+ struct tm tblock;
+ char buf[25];
+
+ tblock.tm_year = YearOf( Date8 ) - 1900;
+ tblock.tm_mon = MonthOf( Date8 ) - 1;
+ tblock.tm_mday = DayOf( XB_FMT_MONTH, Date8 );
+ tblock.tm_hour = 0;
+ tblock.tm_min = 0;
+ tblock.tm_sec = 1;
+ tblock.tm_isdst = -1;
+ if( mktime( &tblock ) == -1 )
+ fDate = "????";
+ else
+ {
+ strftime( buf, 25, "%B", &tblock );
+ fDate = buf;
+ }
+ return fDate;
+}
+
+/***************************************************************/
+//! Short description.
+/*!
+ \param indate in the format of MM/DD/YY
+*/
+/* This function formats a date and returns a pointer to a */
+/* static buffer containing the date */
+
+xbString& xbDate::FormatCTODdate( const char * indate )
+{
+ xbDate d;
+ char cbuf[3];
+ char odate[9];
+ fDate = "";
+ if( indate[0] == ' ' || indate[1] == ' ' ) // empty date
+ return fDate;
+
+ sprintf( cbuf, "%02d",
+ d.CalcRollingCenturyForYear( atoi( indate+6 )));
+ odate[0] = cbuf[0];
+ odate[1] = cbuf[1];
+ odate[2] = indate[6];
+ odate[3] = indate[7];
+ odate[4] = indate[0];
+ odate[5] = indate[1];
+ odate[6] = indate[3];
+ odate[7] = indate[4];
+ odate[8] = 0x00;
+
+ fDate = odate;
+ return fDate;
+}
+/***************************************************************/
+//! Short description.
+/*!
+ \param Format
+ \param Date8
+*/
+/* This function formats a date and returns a pointer to a */
+/* static buffer containing the date */
+
+xbString& xbDate::FormatDate( const char * Format, const char * Date8 )
+{
+ const char *FmtPtr; /* format pointer */
+ char *BufPtr; /* buffer pointer */
+ char type;
+ char cbuf[10];
+ int type_ctr, i;
+ char buf[50];
+ xbString s;
+
+ memset( buf, 0x00, 50 );
+ if( strstr( Format, "YYDDD" ))
+ {
+ buf[0] = Date8[2];
+ buf[1] = Date8[3];
+ sprintf( buf+2, "%03d", DayOf( XB_FMT_YEAR, Date8 ));
+ }
+ else
+ {
+ BufPtr = buf;
+ FmtPtr = Format;
+ memset( cbuf, 0x00, 10 );
+ while( *FmtPtr )
+ {
+ if( *FmtPtr != 'D' && *FmtPtr != 'M' && *FmtPtr != 'Y' )
+ {
+ *BufPtr = *FmtPtr;
+ BufPtr++;
+ FmtPtr++;
+ }
+ else
+ {
+ type = *FmtPtr;
+ type_ctr = 0;
+ while( *FmtPtr == type )
+ {
+ type_ctr++;
+ FmtPtr++;
+ }
+ switch( type )
+ {
+ case 'D':
+ if( type_ctr == 1 )
+ {
+ sprintf( cbuf, "%d", DayOf( XB_FMT_MONTH, Date8 ));
+ strcat( buf, cbuf );
+ BufPtr += strlen( cbuf );
+ }
+ else if( type_ctr == 2 )
+ {
+ cbuf[0] = Date8[6];
+ cbuf[1] = Date8[7];
+ cbuf[2] = 0x00;
+ strcat( buf, cbuf );
+ BufPtr += 2;
+ }
+ else
+ {
+ s = CharDayOf( Date8 );
+ if( type_ctr == 3 )
+ {
+ strncat( buf, s.getData(), 3 );
+ BufPtr += 3;
+ }
+ else
+ {
+ strcpy( cbuf, CharDayOf( Date8 ));
+ for( i = 0; i < 9; i++ )
+ if( cbuf[i] == 0x20 ) cbuf[i] = 0x00;
+ strcat( buf, cbuf );
+ BufPtr += strlen( cbuf );
+ }
+ }
+ break;
+
+ case 'M':
+ if( type_ctr == 1 )
+ {
+ sprintf( cbuf, "%d", MonthOf( Date8 ));
+ strcat( buf, cbuf );
+ BufPtr += strlen( cbuf );
+ }
+ else if( type_ctr == 2 )
+ {
+ cbuf[0] = Date8[4];
+ cbuf[1] = Date8[5];
+ cbuf[2] = 0x00;
+ strcat( buf, cbuf );
+ BufPtr += 2;
+ }
+ else
+ {
+ s = CharMonthOf( Date8 );
+ if( type_ctr == 3 )
+ {
+ strncat( buf, s.getData(), 3 );
+ BufPtr += 3;
+ }
+ else
+ {
+ strcpy( cbuf, CharMonthOf( Date8 ));
+ for( i = 0; i < 9; i++ )
+ if( cbuf[i] == 0x20 ) cbuf[i] = 0x00;
+ strcat( buf, cbuf );
+ BufPtr += strlen( cbuf );
+ }
+ }
+ break;
+
+ case 'Y':
+ if( type_ctr == 2 )
+ {
+ cbuf[0] = Date8[2];
+ cbuf[1] = Date8[3];
+ cbuf[2] = 0x00;
+ strcat( buf, cbuf );
+ BufPtr += 2;
+ }
+ else if( type_ctr == 4 )
+ {
+ cbuf[0] = Date8[0];
+ cbuf[1] = Date8[1];
+ cbuf[2] = Date8[2];
+ cbuf[3] = Date8[3];
+ cbuf[4] = 0x00;
+ strcat( buf, cbuf );
+ BufPtr += 4;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+ }
+ }
+ fDate = buf;
+ return fDate;
+}
+/***************************************************************/
+//! Short description.
+/*!
+ \param Date8
+*/
+/* this routine returns the Date8 format of the last day of the
+ month for the given input Date8 */
+
+xbString & xbDate::LastDayOfMonth( const char * Date8 )
+{
+ char tmp[9];
+ sprintf( tmp, "%4.4d%2.2d%2.2d",
+ YearOf( Date8 ), MonthOf( Date8 ),
+ DaysInMonths[IsLeapYear(Date8)][MonthOf(Date8)]);
+ cDate8 = tmp;
+ return cDate8;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+xbString &xbDate::operator+=( int count )
+{
+ JulToDate8( JulianDays() + count );
+ return cDate8;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+xbString &xbDate::operator-=( int count )
+{
+ JulToDate8( JulianDays() - count );
+ return cDate8;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+xbString &xbDate::operator++( int )
+{
+ *this+=1;
+ return cDate8;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+xbString &xbDate::operator--( int )
+{
+ *this-=1;
+ return cDate8;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+xbString &xbDate::operator+( int count )
+{
+ xbDate d( GetDate() );
+ d+=count;
+ fDate = d.GetDate();
+ return fDate;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+xbString &xbDate::operator-( int count )
+{
+ xbDate d( GetDate() );
+ d-=count;
+ fDate = d.GetDate();
+ return fDate;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+long xbDate::operator-( const xbDate & d ) const
+{
+ return JulianDays() - d.JulianDays();
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+int xbDate::operator==( const xbDate & d ) const
+{
+ if( JulianDays() == d.JulianDays() )
+ return 1;
+ else
+ return 0;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+int xbDate::operator!=( const xbDate & d ) const
+{
+ if( JulianDays() != d.JulianDays() )
+ return 1;
+ else
+ return 0;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+int xbDate::operator<( const xbDate & d ) const
+{
+ if( JulianDays() < d.JulianDays() )
+ return 1;
+ else
+ return 0;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+int xbDate::operator>( const xbDate & d ) const
+{
+ if( JulianDays() > d.JulianDays() )
+ return 1;
+ else
+ return 0;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+int xbDate::operator<=( const xbDate & d ) const
+{
+ if( JulianDays() <= d.JulianDays() )
+ return 1;
+ else
+ return 0;
+}
+/**********************************************************************/
+//! Short description.
+/*!
+*/
+int xbDate::operator>=( const xbDate & d ) const
+{
+ if( JulianDays() >= d.JulianDays() )
+ return 1;
+ else
+ return 0;
+}
+/**********************************************************************/