97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/*
|
|
* $Id$
|
|
*
|
|
Harbour Project source code
|
|
|
|
Copyright(C) 1999 by Jose Lalin.
|
|
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.
|
|
|
|
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/).
|
|
|
|
You can contact me at: dezac@corevia.com
|
|
*/
|
|
|
|
#include <extend.h>
|
|
#include <itemapi.h>
|
|
#include <ctype.h>
|
|
#include <init.h>
|
|
|
|
extern STACK stack;
|
|
|
|
HARBOUR HB_DESCEND(void);
|
|
|
|
HB_INIT_SYMBOLS_BEGIN( Descend__InitSymbols )
|
|
{ "DESCEND", FS_PUBLIC, HB_DESCEND, 0 }
|
|
HB_INIT_SYMBOLS_END( Descend__InitSymbols );
|
|
#if ! defined(__GNUC__)
|
|
#pragma Descend__InitSymbols
|
|
#endif
|
|
|
|
char *hb_strdescend( char *string )
|
|
{
|
|
char *s;
|
|
|
|
if( string )
|
|
{
|
|
for( s = string; *s; ++s )
|
|
*s = 256 - *s;
|
|
}
|
|
return string;
|
|
}
|
|
|
|
HARBOUR HB_DESCEND( void )
|
|
{
|
|
if( hb_pcount() == 1 )
|
|
{
|
|
PHB_ITEM pItem = hb_param(1, IT_ANY );
|
|
|
|
if( pItem )
|
|
{
|
|
if( IS_STRING( pItem ) )
|
|
hb_retc( hb_strdescend( pItem->item.asString.value ) );
|
|
else if( IS_DATE( pItem ) )
|
|
hb_retnl( 5231808 - pItem->item.asDate.value );
|
|
else if( IS_INTEGER( pItem ) )
|
|
hb_retni( -1 * pItem->item.asInteger.value );
|
|
else if( IS_LONG( pItem ) )
|
|
hb_retnl( -1 * pItem->item.asLong.value );
|
|
else if( IS_DOUBLE( pItem ) )
|
|
{
|
|
PHB_ITEM pReturn;
|
|
|
|
pReturn = hb_itemPutND( NULL, -1 * pItem->item.asDouble.value );
|
|
hb_itemReturn( pReturn );
|
|
hb_itemRelease( pReturn );
|
|
|
|
/* It is dengerous to operate on the stack directly
|
|
stack.Return.wDec = pItem->wDec;
|
|
*/
|
|
}
|
|
else if( IS_LOGICAL( pItem ) )
|
|
hb_retl( !pItem->item.asLogical.value );
|
|
else
|
|
hb_retc( "NIL" );
|
|
}
|
|
}
|
|
}
|