lua.lua/lundump.h

/*
** $Id: lundump.h,v 1.6 1998/06/13 16:54:15 lhf Exp $
** load pre-compiled Lua chunks
** See Copyright Notice in lua.h
*/

#ifndef lundump_h
#define lundump_h

#include "lobject.h"
#include "lzio.h"

TProtoFunc* luaU_undump1(ZIO* Z);	/* load one chunk */

#define	SIGNATURE	"Lua"
#define	VERSION		0x31		/* last format change was in 3.1 */

#define IsMain(f)	(f->lineDefined==0)

#define ID_CHUNK	27		/* ESC */
#define ID_NUM		'N'
#define ID_STR		'S'
#define ID_FUN		'F'

/* number representation */
#define ID_INT4		'l'		/* 4-byte integers */
#define ID_REAL4	'f'		/* 4-byte reals */
#define ID_REAL8	'd'		/* 8-byte reals */
#define ID_NATIVE	'?'		/* whatever your machine uses */

/*
* use a multiple of PI for testing number representation.
* multiplying by 1E8 gives notrivial integer values.
*/
#define	TEST_NUMBER	3.14159265358979323846E8

/* LUA_NUMBER
* choose one below for the number representation in precompiled chunks.
* the default is ID_REAL8 because the default for LUA_NUM_TYPE is double.
* if your machine does not use IEEE 754, use ID_NATIVE.
* the next version will support conversion to/from IEEE 754.
*
* if you change LUA_NUM_TYPE, make sure you set ID_NUMBER accordingly,
* specially if sizeof(long)!=4.
* for types other than the ones listed below, you'll have to write your own
* dump and undump routines.
*/

#define	ID_NUMBER	ID_REAL8

#if 0
#define	ID_NUMBER	ID_REAL4
#define	ID_NUMBER	ID_INT4
#define	ID_NUMBER	ID_NATIVE
#endif

#endif