160 lines
4.3 KiB
C
160 lines
4.3 KiB
C
/*
|
|
* $Id$
|
|
*/
|
|
|
|
/*
|
|
* Harbour Project source code:
|
|
* MIN(), MAX() functions
|
|
*
|
|
* Copyright 1999 Matthew Hamilton <mhamilton@bunge.com.au>
|
|
* www - http://www.harbour-project.org
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version, with one exception:
|
|
*
|
|
* The exception is that if you link the Harbour Runtime Library (HRL)
|
|
* and/or the Harbour Virtual Machine (HVM) with other files to produce
|
|
* an executable, this does not by itself cause the resulting executable
|
|
* to be covered by the GNU General Public License. Your use of that
|
|
* executable is in no way restricted on account of linking the HRL
|
|
* and/or HVM code into it.
|
|
*
|
|
* 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 General Public License for more details.
|
|
*
|
|
* 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., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
|
|
* their web site at http://www.gnu.org/).
|
|
*
|
|
*/
|
|
|
|
#include "hbapi.h"
|
|
#include "hbapiitm.h"
|
|
#include "hbapierr.h"
|
|
|
|
/* returns the maximum of two date or numerics */
|
|
HB_FUNC( MAX )
|
|
{
|
|
PHB_ITEM p1 = hb_param( 1, HB_IT_ANY );
|
|
PHB_ITEM p2 = hb_param( 2, HB_IT_ANY );
|
|
|
|
if( HB_IS_NUMERIC( p1 ) && HB_IS_NUMERIC( p2 ) )
|
|
{
|
|
/* NOTE: The order of these if() branches is significant, */
|
|
/* please, don't change it. [vszakats] */
|
|
|
|
if( HB_IS_DOUBLE( p1 ) || HB_IS_DOUBLE( p2 ) )
|
|
{
|
|
double d1 = hb_itemGetND( p1 );
|
|
double d2 = hb_itemGetND( p2 );
|
|
|
|
int iDec1;
|
|
int iDec2;
|
|
|
|
hb_itemGetNLen( p1, NULL, &iDec1 );
|
|
hb_itemGetNLen( p2, NULL, &iDec2 );
|
|
|
|
if( d1 >= d2 )
|
|
hb_retndlen( d1, 0, iDec1 );
|
|
else
|
|
hb_retndlen( d2, 0, iDec2 );
|
|
}
|
|
else if( HB_IS_LONG( p1 ) || HB_IS_LONG( p2 ) )
|
|
{
|
|
long l1 = hb_itemGetNL( p1 );
|
|
long l2 = hb_itemGetNL( p2 );
|
|
|
|
hb_retnl( l1 >= l2 ? l1 : l2 );
|
|
}
|
|
else
|
|
{
|
|
int i1 = hb_itemGetNI( p1 );
|
|
int i2 = hb_itemGetNI( p2 );
|
|
|
|
hb_retni( i1 >= i2 ? i1 : i2 );
|
|
}
|
|
}
|
|
else if( HB_IS_DATE( p1 ) && HB_IS_DATE( p2 ) )
|
|
{
|
|
char szDate[ 9 ];
|
|
|
|
hb_retds( hb_itemGetDL( p1 ) >= hb_itemGetDL( p2 ) ? hb_pardsbuff( szDate, 1 ) : hb_pardsbuff( szDate, 2 ) );
|
|
}
|
|
else
|
|
{
|
|
PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1093, NULL, "MAX" );
|
|
|
|
if( pResult )
|
|
{
|
|
hb_itemReturn( pResult );
|
|
hb_itemRelease( pResult );
|
|
}
|
|
}
|
|
}
|
|
|
|
/* returns the minimum of two date or numerics */
|
|
HB_FUNC( MIN )
|
|
{
|
|
PHB_ITEM p1 = hb_param( 1, HB_IT_ANY );
|
|
PHB_ITEM p2 = hb_param( 2, HB_IT_ANY );
|
|
|
|
if( HB_IS_NUMERIC( p1 ) && HB_IS_NUMERIC( p2 ) )
|
|
{
|
|
/* NOTE: The order of these if() branches is significant, */
|
|
/* please, don't change it. [vszakats] */
|
|
|
|
if( HB_IS_DOUBLE( p1 ) || HB_IS_DOUBLE( p2 ) )
|
|
{
|
|
double d1 = hb_itemGetND( p1 );
|
|
double d2 = hb_itemGetND( p2 );
|
|
|
|
int iDec1;
|
|
int iDec2;
|
|
|
|
hb_itemGetNLen( p1, NULL, &iDec1 );
|
|
hb_itemGetNLen( p2, NULL, &iDec2 );
|
|
|
|
if( d1 <= d2 )
|
|
hb_retndlen( d1, 0, iDec1 );
|
|
else
|
|
hb_retndlen( d2, 0, iDec2 );
|
|
}
|
|
else if( HB_IS_LONG( p1 ) || HB_IS_LONG( p2 ) )
|
|
{
|
|
long l1 = hb_itemGetNL( p1 );
|
|
long l2 = hb_itemGetNL( p2 );
|
|
|
|
hb_retnl( l1 <= l2 ? l1 : l2 );
|
|
}
|
|
else
|
|
{
|
|
int i1 = hb_itemGetNI( p1 );
|
|
int i2 = hb_itemGetNI( p2 );
|
|
|
|
hb_retni( i1 <= i2 ? i1 : i2 );
|
|
}
|
|
}
|
|
else if( HB_IS_DATE( p1 ) && HB_IS_DATE( p2 ) )
|
|
{
|
|
char szDate[ 9 ];
|
|
|
|
hb_retds( hb_itemGetDL( p1 ) <= hb_itemGetDL( p2 ) ? hb_pardsbuff( szDate, 1 ) : hb_pardsbuff( szDate, 2 ) );
|
|
}
|
|
else
|
|
{
|
|
PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1092, NULL, "MIN" );
|
|
|
|
if( pResult )
|
|
{
|
|
hb_itemReturn( pResult );
|
|
hb_itemRelease( pResult );
|
|
}
|
|
}
|
|
}
|
|
|