commit e2c8c756eea9ecb51b05ade661ef1367e47e623c
parent 5ca5086c191259dd88cc51161a82e93759136486
Author: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Thu, 23 May 2013 18:26:41 -0300
removed 'IEEE tricks' (should not be needed in Lua with integers)
Diffstat:
| M | llimits.h | | | 57 | +-------------------------------------------------------- |
1 file changed, 1 insertion(+), 56 deletions(-)
diff --git a/llimits.h b/llimits.h
@@ -1,5 +1,5 @@
/*
-** $Id: llimits.h,v 1.103 2013/02/20 14:08:56 roberto Exp roberto $
+** $Id: llimits.h,v 1.104 2013/04/25 21:15:37 roberto Exp roberto $
** Limits, basic types, and some other `installation-dependent' definitions
** See Copyright Notice in lua.h
*/
@@ -202,52 +202,6 @@ typedef lu_int32 Instruction;
** both small and large values (outside the range of integers).
*/
-#if defined(MS_ASMTRICK) || defined(LUA_MSASMTRICK) /* { */
-/* trick with Microsoft assembler for X86 */
-
-#define lua_number2int(i,n) __asm {__asm fld n __asm fistp i}
-#define lua_number2integer(i,n) lua_number2int(i, n)
-#define lua_number2unsigned(i,n) \
- {__int64 l; __asm {__asm fld n __asm fistp l} i = (unsigned int)l;}
-
-
-#elif defined(LUA_IEEE754TRICK) /* }{ */
-/* the next trick should work on any machine using IEEE754 with
- a 32-bit int type */
-
-union luai_Cast { double l_d; LUA_INT32 l_p[2]; };
-
-#if !defined(LUA_IEEEENDIAN) /* { */
-#define LUAI_EXTRAIEEE \
- static const union luai_Cast ieeeendian = {-(33.0 + 6755399441055744.0)};
-#define LUA_IEEEENDIANLOC (ieeeendian.l_p[1] == 33)
-#else
-#define LUA_IEEEENDIANLOC LUA_IEEEENDIAN
-#define LUAI_EXTRAIEEE /* empty */
-#endif /* } */
-
-#define lua_number2int32(i,n,t) \
- { LUAI_EXTRAIEEE \
- volatile union luai_Cast u; u.l_d = (n) + 6755399441055744.0; \
- (i) = (t)u.l_p[LUA_IEEEENDIANLOC]; }
-
-#define luai_hashnum(i,n) \
- { volatile union luai_Cast u; u.l_d = (n) + 1.0; /* avoid -0 */ \
- (i) = u.l_p[0]; (i) += u.l_p[1]; } /* add double bits for his hash */
-
-#define lua_number2int(i,n) lua_number2int32(i, n, int)
-#define lua_number2unsigned(i,n) lua_number2int32(i, n, lua_Unsigned)
-
-/* the trick can be expanded to lua_Integer when it is a 32-bit value */
-#if defined(LUA_IEEELL)
-#define lua_number2integer(i,n) lua_number2int32(i, n, lua_Integer)
-#endif
-
-#endif /* } */
-
-
-/* the following definitions always work, but may be slow */
-
#if !defined(lua_number2int)
#define lua_number2int(i,n) ((i)=(int)(n))
#endif
@@ -269,15 +223,6 @@ union luai_Cast { double l_d; LUA_INT32 l_p[2]; };
#endif /* } */
-#if !defined(lua_unsigned2number)
-/* on several machines, coercion from unsigned to double is slow,
- so it may be worth to avoid */
-#define lua_unsigned2number(u) \
- (((u) <= (lua_Unsigned)INT_MAX) ? (lua_Number)(int)(u) : (lua_Number)(u))
-#endif
-
-
-
#if defined(ltable_c) && !defined(luai_hashnum)
#include <float.h>
