19 lines
		
	
	
	
		
			290 B
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			19 lines
		
	
	
	
		
			290 B
		
	
	
	
		
			C
		
	
	
	
	
	
#define CODE_EXPANDER
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#include <back.h>
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#include <assert.h>
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#include <system.h>
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extern int B_busy; 
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int C_open( filename)
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char *filename;
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{
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	assert( !B_busy);
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	if ( !open_back( filename)) {
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		fprint( STDERR, "Couldn't open %s\n", filename);
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		return( 0);
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	}
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	else
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	        return( 1);
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}
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