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better support for 64-bit machines

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This commit is contained in:
Roberto Ierusalimschy
2004-11-24 16:55:56 -02:00
parent 087df82a61
commit 2f82bf6fe9
4 changed files with 46 additions and 39 deletions
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54
luaconf.h
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@@ -1,5 +1,5 @@
/*
** $Id: luaconf.h,v 1.15 2004/10/18 18:07:31 roberto Exp roberto $
** $Id: luaconf.h,v 1.16 2004/11/18 19:53:49 roberto Exp roberto $
** Configuration file for Lua
** See Copyright Notice in lua.h
*/
@@ -46,8 +46,11 @@
#define LUA_NUMBER_FMT "%.14g"
/* type for integer functions */
#define LUA_INTEGER long
/*
** type for integer functions
** on most machines, `ptrdiff_t' gives a reasonable size for integers
*/
#define LUA_INTEGER ptrdiff_t
/* mark for all API functions */
@@ -130,12 +133,38 @@
#define api_check(L,o) lua_assert(o)
/* an unsigned integer with at least 32 bits */
#define LUA_UINT32 unsigned long
/* number of bits in an `int' */
/* avoid overflows in comparison */
#if INT_MAX-20 < 32760
#define LUA_BITSINT 16
#elif INT_MAX > 2147483640L
/* `int' has at least 32 bits */
#define LUA_BITSINT 32
#else
#error "you must define LUA_BITSINT with number of bits in an integer"
#endif
/* a signed integer with at least 32 bits */
/*
** L_UINT32: unsigned integer with at least 32 bits
** L_INT32: signed integer with at least 32 bits
** LU_MEM: an unsigned integer big enough to count the total memory used by Lua
** L_MEM: a signed integer big enough to count the total memory used by Lua
*/
#if LUA_BITSINT >= 32
#define LUA_UINT32 unsigned int
#define LUA_INT32 int
#define LUA_MAXINT32 INT_MAX
#define LU_MEM size_t
#define L_MEM ptrdiff_t
#else
/* 16-bit ints */
#define LUA_UINT32 unsigned long
#define LUA_INT32 long
#define LUA_MAXINT32 LONG_MAX
#define LU_MEM LUA_UINT32
#define L_MEM ptrdiff_t
#endif
/* maximum depth for calls (unsigned short) */
@@ -174,7 +203,7 @@
/* function to convert a lua_Number to int (with any rounding method) */
#if defined(__GNUC__) && defined(__i386)
#define lua_number2int(i,d) __asm__ ("fistpl %0":"=m"(i):"t"(d):"st")
#elif 0
#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199900L)
/* on machines compliant with C99, you can try `lrint' */
#include <math.h>
#define lua_number2int(i,d) ((i)=lrint(d))
@@ -199,17 +228,6 @@
#define LUA_UACNUMBER double
/* number of bits in an `int' */
/* avoid overflows in comparison */
#if INT_MAX-20 < 32760
#define LUA_BITSINT 16
#elif INT_MAX > 2147483640L
/* machine has at least 32 bits */
#define LUA_BITSINT 32
#else
#error "you must define LUA_BITSINT with number of bits in an integer"
#endif
/* type to ensure maximum alignment */
#define LUSER_ALIGNMENT_T union { double u; void *s; long l; }