37b3fb2550
* include/hbdefs.h
! Fixed typo when restructuring types causing no HB_MAXINT
type in some cases.
* contrib/gtalleg/gtalleg.c
* USHORT -> HB_USHORT
* contrib/hbct/print.c
* contrib/hbnf/descendn.c
* contrib/hbclipsm/gauge.c
* USHORT -> HB_SIZE
* contrib/xhb/txtline.c
* USHORT, int -> HB_SIZE
100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
/*
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* $Id$
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*/
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/*
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* File......: descend.c
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* Author....: Ted Means
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* CIS ID....: 73067,3332
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*
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* This function is an original work by Ted Means and is placed in the
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* public domain.
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*
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* Modification history:
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* ---------------------
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*
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* Rev 1.1 01 May 1995 03:05:00 TED
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* Added typecast to tame compiler warning
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*
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* Rev 1.0 01 Feb 1995 03:02:00 TED
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* Initial release
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*
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*/
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/* $DOC$
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* $FUNCNAME$
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* FT_Descend()
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* $CATEGORY$
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* Conversion
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* $ONELINER$
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* Create a descending index key value
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* $SYNTAX$
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* FT_Descend( <exp> ) -> <value>
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* $ARGUMENTS$
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* <exp> is any expression of character, numeric, date, or logical type.
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* $RETURNS$
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* The inverse of <exp>
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* $DESCRIPTION$
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* This function is a replacement for CA-Cl*pper's Descend() function,
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* which is known to produce memory corruption occassionally.
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* $EXAMPLES$
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* ? FT_Descend( 1 ) // Returns -1
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* $SEEALSO$
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* FT_XTOY()
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* $END$
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*/
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#include "hbapi.h"
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#include "hbapiitm.h"
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HB_FUNC( FT_DESCEND )
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{
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#if defined( HB_OS_DOS ) || defined( HB_OS_WIN )
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{
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PHB_ITEM iP = hb_itemParam( 1 );
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HB_TYPE uiType = hb_itemType( iP );
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PHB_ITEM iR = NULL;
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HB_SIZE uiLen, n;
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char * pDescend;
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if ( ( uiType & HB_IT_NUMERIC ) && ( uiType & HB_IT_DOUBLE ) )
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iR = hb_itemPutND( 0, 0 - hb_itemGetND( iP ) );
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else if ( uiType & HB_IT_NUMERIC )
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iR = hb_itemPutNL( 0, 0 - hb_itemGetNL( iP ) );
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else if ( uiType & HB_IT_DATE )
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iR = hb_itemPutNL( 0, 0x4FD4C0L - hb_itemGetNL( iP ) );
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else if ( uiType & HB_IT_TIMESTAMP )
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iR = hb_itemPutND( 0, 0x4FD4C0L - hb_itemGetTD( iP ) );
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else if ( uiType & HB_IT_LOGICAL )
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iR = hb_itemPutL( 0, ( hb_itemGetL( iP ) > 0 ) ? 0 : 1 );
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else if ( uiType & HB_IT_STRING )
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{
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uiLen = hb_itemSize( iP );
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pDescend = ( char * ) hb_xgrab( uiLen );
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hb_itemCopyC( iP, pDescend, uiLen );
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for ( n = 0; n < uiLen; n++ )
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pDescend[ n ] = ( char ) 0 - pDescend[ n ];
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iR = hb_itemPutCL( 0, pDescend, uiLen );
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hb_xfree( pDescend );
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}
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hb_itemReturn( iR );
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hb_itemRelease( iP );
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hb_itemRelease( iR );
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}
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#endif
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}
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