From b4ad600b933b51701ac0556fa353b43d9bc69854 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Tue, 13 Apr 1999 17:16:37 -0300
Subject: numbers are stored in ascii format for better portability and
 simplicity

---
 lundump.h | 91 +++++++++++++--------------------------------------------------
 1 file changed, 18 insertions(+), 73 deletions(-)

(limited to 'lundump.h')

diff --git a/lundump.h b/lundump.h
index 399a72db..0446ccdf 100644
--- a/lundump.h
+++ b/lundump.h
@@ -1,5 +1,5 @@
 /*
-** $Id: lundump.h,v 1.6 1999/03/30 20:29:34 roberto Exp roberto $
+** $Id: lundump.h,v 1.13 1999/03/29 16:16:18 lhf Exp lhf $
 ** load pre-compiled Lua chunks
 ** See Copyright Notice in lua.h
 */
@@ -10,39 +10,7 @@
 #include "lobject.h"
 #include "lzio.h"
 
-/* -- start of user configuration ------------------------------------------ */
-
-/* LUA_NUMBER
-* choose below the number representation in precompiled chunks by choosing an
-*  an adequate definition for ID_NUMBER.
-* if you change LUA_NUM_TYPE, you must set ID_NUMBER accordingly.
-* the default is ID_REAL8 because the default for LUA_NUM_TYPE is double.
-* if you want to use this default, do nothing.
-* if your machine does not use the IEEE 754 floating-point standard, use
-*  ID_NATIVE, but precompiled chunks may not be portable to all architectures.
-*
-* for types other than the ones listed below, you'll have to write your own
-*  dump and undump routines, specially if sizeof(long)!=4.
-*/
-
-/* choose one definition for ID_NUMBER and move it to after #endif */
-#if 0
-#define	ID_NUMBER	ID_INT4		/* 4-byte integers */
-#define	ID_NUMBER	ID_REAL4	/* 4-byte reals */
-#define	ID_NUMBER	ID_REAL8	/* 8-byte reals */
-#define	ID_NUMBER	ID_NATIVE	/* whatever your machine uses */
-#endif
-
-/* format for numbers in listings and error messages */
-#ifndef NUMBER_FMT
-#define NUMBER_FMT	"%.16g"		/* LUA_NUMBER */
-#endif
-
-/* -- end of user configuration -- DO NOT CHANGE ANYTHING BELOW THIS LINE -- */
-
-
 TProtoFunc* luaU_undump1 (ZIO* Z);	/* load one chunk */
-void luaU_testnumber (void);		/* test number representation */
 void luaU_badconstant (char* s, int i, TObject* o, TProtoFunc* tf);
 					/* handle cases that cannot happen */
 
@@ -52,52 +20,29 @@ void luaU_badconstant (char* s, int i, TObject* o, TProtoFunc* tf);
 #define ID_CHUNK	27		/* binary files start with ESC... */
 #define	SIGNATURE	"Lua"		/* ...followed by this signature */
 
-/* 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 */
+/* formats for error messages */
+#define SOURCE		"<%s:%d>"
+#define IN		" in %p " SOURCE
+#define INLOC		tf,tf->source->str,tf->lineDefined
 
-/* the default is ID_REAL8 because the default for LUA_NUM_TYPE is double */
-#ifndef ID_NUMBER
-#define	ID_NUMBER	ID_REAL8	/* 8-byte reals */
+/* format for numbers in listings and error messages */
+#ifndef NUMBER_FMT
+#define NUMBER_FMT	"%.16g"		/* LUA_NUMBER */
 #endif
 
+/* LUA_NUMBER
+* by default, numbers are stored in precompiled chunks as decimal strings.
+* this is completely portable and fast enough for most applications.
+* if you want to use this default, do nothing.
+* if you want additional speed at the expense of portability, move the line
+* below out of this comment.
+#define LUAC_NATIVE
+*/
+
+#ifdef LUAC_NATIVE
 /* a multiple of PI for testing number representation */
 /* multiplying by 1E8 gives non-trivial integer values */
 #define	TEST_NUMBER	3.14159265358979323846E8
-
-#if   ID_NUMBER==ID_REAL4
-	#define	DumpNumber	DumpFloat
-	#define	LoadNumber	LoadFloat
-	#define SIZEOF_NUMBER	4
-	#define TYPEOF_NUMBER	float
-	#define NAMEOF_NUMBER	"float"
-#elif ID_NUMBER==ID_REAL8
-	#define	DumpNumber	DumpDouble
-	#define	LoadNumber	LoadDouble
-	#define SIZEOF_NUMBER	8
-	#define TYPEOF_NUMBER	double
-	#define NAMEOF_NUMBER	"double"
-#elif ID_NUMBER==ID_INT4
-	#define	DumpNumber	DumpLong
-	#define	LoadNumber	LoadLong
-	#define SIZEOF_NUMBER	4
-	#define TYPEOF_NUMBER	long
-	#define NAMEOF_NUMBER	"long"
-#elif ID_NUMBER==ID_NATIVE
-	#define	DumpNumber	DumpNative
-	#define	LoadNumber	LoadNative
-	#define SIZEOF_NUMBER	sizeof(real)
-	#define TYPEOF_NUMBER	real
-	#define NAMEOF_NUMBER	"native"
-#else
-	#error	bad ID_NUMBER
 #endif
 
-/* formats for error messages */
-#define SOURCE		"<%s:%d>"
-#define IN		" in %p " SOURCE
-#define INLOC		tf,tf->source->str,tf->lineDefined
-
 #endif
-- 
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