88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* ABS() function
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*
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* Copyright 1999 {list of individual authors and e-mail addresses}
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* www - http://www.harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version, with one exception:
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*
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* The exception is that if you link the Harbour Runtime Library (HRL)
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* and/or the Harbour Virtual Machine (HVM) with other files to produce
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* an executable, this does not by itself cause the resulting executable
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* to be covered by the GNU General Public License. Your use of that
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* executable is in no way restricted on account of linking the HRL
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* and/or HVM code into it.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
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* their web site at http://www.gnu.org/).
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*
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*/
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#include "hbapi.h"
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#include "hbapiitm.h"
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#include "hbapierr.h"
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HB_FUNC( ABS )
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{
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PHB_ITEM pNumber = hb_param( 1, IT_NUMERIC );
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if( pNumber )
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{
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int iWidth;
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int iDec;
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hb_itemGetNLen( pNumber, &iWidth, &iDec );
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if( IS_INTEGER( pNumber ) )
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{
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int iNumber = hb_itemGetNI( pNumber );
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if( iNumber >= 0 )
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hb_retnilen( iNumber, iWidth );
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else
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hb_retni( -iNumber );
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}
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else if( IS_LONG( pNumber ) )
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{
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long lNumber = hb_itemGetNL( pNumber );
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if( lNumber >= 0 )
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hb_retnllen( lNumber, iWidth );
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else
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hb_retnl( -lNumber );
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}
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else if( IS_DOUBLE( pNumber ) )
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{
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double dNumber = hb_itemGetND( pNumber );
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hb_retndlen( dNumber >= 0.0 ? dNumber : -dNumber, 0, iDec );
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}
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}
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else
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{
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PHB_ITEM pResult = hb_errRT_BASE_Subst( EG_ARG, 1089, NULL, "ABS" );
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if( pResult )
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{
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hb_itemReturn( pResult );
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hb_itemRelease( pResult );
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}
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}
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}
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