26fde59322
* source/rtl/mod.c
! Fixed error object to be C5x compatible when wrong or too
few parameters were passed to MOD(). Now the previously
corrected MOD() regression tests pass. (I misinterpreted
the problem in the previous ChangeLog entry.)
* utils/hbtest/rt_math.prg
+ Added two new tests for MOD()
117 lines
3.9 KiB
C
117 lines
3.9 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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* MOD() function
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*
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* Copyright 1999 Matthew Hamilton <mhamilton@bunge.com.au>
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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, or (at your option)
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* any later version.
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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 software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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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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#include "hbmath.h"
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/* NOTE: In CA-Cl*pper this is written in Clipper, see the source below,
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and the error handling is NOT made here, but in the % operator.
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[vszakats] */
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/* NOTE: CA-Cl*pper is buggy since it relies on the fact that the errorhandler
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will silently handle zero division errors. [vszakats] */
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/* NOTE: This C version fully emulates the behaviour of the original
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CA-Cl*pper version, including bugs/side-effects. [vszakats] */
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HB_FUNC( MOD )
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{
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PHB_ITEM pNumber = hb_param( 1, HB_IT_NUMERIC );
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if( pNumber && ISNUM( 2 ) )
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{
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double dNumber = hb_itemGetND( pNumber );
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double dBase = hb_parnd( 2 ); /* dBase! Cool! */
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if( dBase )
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{
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double dResult = fmod( dNumber, dBase );
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if ( dResult && ( dNumber > 0 ? dBase < 0 : dBase > 0 ) )
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dResult += dBase;
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hb_retnd( dResult );
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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_ZERODIV, 1341, NULL, "%", HB_ERR_ARGS_BASEPARAMS );
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if( pResult )
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{
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int iDec;
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hb_itemRelease( pResult );
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hb_itemGetNLen( pNumber, NULL, &iDec );
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hb_retndlen( dNumber, 0, iDec );
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}
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}
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}
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else
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{
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PHB_ITEM pItemNIL = hb_itemNew( NULL );
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hb_errRT_BASE_SubstR( EG_ARG, 1085, NULL, "%", 2, hb_pcount() > 0 ? hb_param( 1, HB_IT_ANY ) : pItemNIL, hb_pcount() > 1 ? hb_param( 2, HB_IT_ANY ) : pItemNIL );
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hb_itemRelease( pItemNIL );
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}
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}
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/*
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FUNCTION MOD( cl_num, cl_base )
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LOCAL cl_result := cl_num % cl_base
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RETURN iif( cl_base = 0, cl_num, iif( cl_result * cl_base < 0, cl_result + cl_base, cl_result ) )
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*/
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