4fe096dc29
* contrib/hbnf/dispc.c
* contrib/hbnf/fttext.c
* contrib/hbnf/peek.c
* contrib/hbnf/poke.c
% removed excessive parentheses
65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
/*
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* $Id$
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*/
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/*
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* File......: peek.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 1.3 07 Feb 1994 20:11:50 GLENN
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* Ted re-wrote to make it CPMI compliant.
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*
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* Rev 1.2 15 Aug 1991 23:08:18 GLENN
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* Forest Belt proofread/edited/cleaned up doc
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*
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* Rev 1.1 14 Jun 1991 19:53:46 GLENN
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* Minor edit to file header
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*
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* Rev 1.0 01 Apr 1991 01:02:52 GLENN
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* Nanforum Toolkit
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*
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*
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*/
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#include "hbapi.h"
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#include "cpmi.h"
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#define FP_SEG( fp ) ( *( ( unsigned int * ) &( fp ) + 1 ) )
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#define FP_OFF( fp ) ( *( ( unsigned int * ) &( fp ) ) )
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HB_FUNC( FT_PEEK )
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{
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auto unsigned int ProtMode = cpmiIsProtected();
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auto unsigned char * bytePtr;
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if( PCOUNT >= 2 && HB_ISNUM( 1 ) && HB_ISNUM( 2 ) )
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{
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FP_SEG( bytePtr ) = hb_parni( 1 );
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FP_OFF( bytePtr ) = hb_parni( 2 );
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if( ProtMode )
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{
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FP_SEG( bytePtr ) = hb_cpmiProtectedPtr( bytePtr, 1 );
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FP_OFF( bytePtr ) = 0;
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if( FP_SEG( bytePtr ) == 0 )
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goto Bogus;
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}
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_retni( ( int ) *bytePtr );
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if( ProtMode )
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hb_cpmiFreeSelector( FP_SEG( bytePtr ) );
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}
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else
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Bogus: hb_retni( -1 );
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}
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