+++ /dev/null
-/*
-** $Id: llimits.h,v 1.141 2015/11/19 19:16:22 roberto Exp $
-** Limits, basic types, and some other 'installation-dependent' definitions
-** See Copyright Notice in lua.h
-*/
-
-#ifndef llimits_h
-#define llimits_h
-
-
-#include <limits.h>
-#include <stddef.h>
-
-
-#include "lua.h"
-
-/*
-** 'lu_mem' and 'l_mem' are unsigned/signed integers big enough to count
-** the total memory used by Lua (in bytes). Usually, 'size_t' and
-** 'ptrdiff_t' should work, but we use 'long' for 16-bit machines.
-*/
-#if defined(LUAI_MEM) /* { external definitions? */
-typedef LUAI_UMEM lu_mem;
-typedef LUAI_MEM l_mem;
-#elif LUAI_BITSINT >= 32 /* }{ */
-typedef size_t lu_mem;
-typedef ptrdiff_t l_mem;
-#else /* 16-bit ints */ /* }{ */
-typedef unsigned long lu_mem;
-typedef long l_mem;
-#endif /* } */
-
-
-/* chars used as small naturals (so that 'char' is reserved for characters) */
-typedef unsigned char lu_byte;
-
-
-/* maximum value for size_t */
-#define MAX_SIZET ((size_t)(~(size_t)0))
-
-/* maximum size visible for Lua (must be representable in a lua_Integer */
-#define MAX_SIZE (sizeof(size_t) < sizeof(lua_Integer) ? MAX_SIZET \
- : (size_t)(LUA_MAXINTEGER))
-
-
-#define MAX_LUMEM ((lu_mem)(~(lu_mem)0))
-
-#define MAX_LMEM ((l_mem)(MAX_LUMEM >> 1))
-
-
-#define MAX_INT INT_MAX /* maximum value of an int */
-
-
-/*
-** conversion of pointer to unsigned integer:
-** this is for hashing only; there is no problem if the integer
-** cannot hold the whole pointer value
-*/
-#define point2uint(p) ((unsigned int)((size_t)(p) & UINT_MAX))
-
-
-
-/* type to ensure maximum alignment */
-#if defined(LUAI_USER_ALIGNMENT_T)
-typedef LUAI_USER_ALIGNMENT_T L_Umaxalign;
-#else
-typedef union {
- lua_Number n;
- double u;
- void *s;
- lua_Integer i;
- long l;
-} L_Umaxalign;
-#endif
-
-
-
-/* types of 'usual argument conversions' for lua_Number and lua_Integer */
-typedef LUAI_UACNUMBER l_uacNumber;
-typedef LUAI_UACINT l_uacInt;
-
-
-/* internal assertions for in-house debugging */
-#if defined(lua_assert)
-#define check_exp(c,e) (lua_assert(c), (e))
-/* to avoid problems with conditions too long */
-#define lua_longassert(c) ((c) ? (void)0 : lua_assert(0))
-#else
-#define lua_assert(c) ((void)0)
-#define check_exp(c,e) (e)
-#define lua_longassert(c) ((void)0)
-#endif
-
-/*
-** assertion for checking API calls
-*/
-#if !defined(luai_apicheck)
-#define luai_apicheck(l,e) lua_assert(e)
-#endif
-
-#define api_check(l,e,msg) luai_apicheck(l,(e) && msg)
-
-
-/* macro to avoid warnings about unused variables */
-#if !defined(UNUSED)
-#define UNUSED(x) ((void)(x))
-#endif
-
-
-/* type casts (a macro highlights casts in the code) */
-#define cast(t, exp) ((t)(exp))
-
-#define cast_void(i) cast(void, (i))
-#define cast_byte(i) cast(lu_byte, (i))
-#define cast_num(i) cast(lua_Number, (i))
-#define cast_int(i) cast(int, (i))
-#define cast_uchar(i) cast(unsigned char, (i))
-
-
-/* cast a signed lua_Integer to lua_Unsigned */
-#if !defined(l_castS2U)
-#define l_castS2U(i) ((lua_Unsigned)(i))
-#endif
-
-/*
-** cast a lua_Unsigned to a signed lua_Integer; this cast is
-** not strict ISO C, but two-complement architectures should
-** work fine.
-*/
-#if !defined(l_castU2S)
-#define l_castU2S(i) ((lua_Integer)(i))
-#endif
-
-
-/*
-** non-return type
-*/
-#if defined(__GNUC__)
-#define l_noret void __attribute__((noreturn))
-#elif defined(_MSC_VER) && _MSC_VER >= 1200
-#define l_noret void __declspec(noreturn)
-#else
-#define l_noret void
-#endif
-
-
-
-/*
-** maximum depth for nested C calls and syntactical nested non-terminals
-** in a program. (Value must fit in an unsigned short int.)
-*/
-#if !defined(LUAI_MAXCCALLS)
-#define LUAI_MAXCCALLS 200
-#endif
-
-
-
-/*
-** type for virtual-machine instructions;
-** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
-*/
-#if LUAI_BITSINT >= 32
-typedef unsigned int Instruction;
-#else
-typedef unsigned long Instruction;
-#endif
-
-
-
-/*
-** Maximum length for short strings, that is, strings that are
-** internalized. (Cannot be smaller than reserved words or tags for
-** metamethods, as these strings must be internalized;
-** #("function") = 8, #("__newindex") = 10.)
-*/
-#if !defined(LUAI_MAXSHORTLEN)
-#define LUAI_MAXSHORTLEN 40
-#endif
-
-
-/*
-** Initial size for the string table (must be power of 2).
-** The Lua core alone registers ~50 strings (reserved words +
-** metaevent keys + a few others). Libraries would typically add
-** a few dozens more.
-*/
-#if !defined(MINSTRTABSIZE)
-#define MINSTRTABSIZE 128
-#endif
-
-
-/*
-** Size of cache for strings in the API. 'N' is the number of
-** sets (better be a prime) and "M" is the size of each set (M == 1
-** makes a direct cache.)
-*/
-#if !defined(STRCACHE_N)
-#define STRCACHE_N 53
-#define STRCACHE_M 2
-#endif
-
-
-/* minimum size for string buffer */
-#if !defined(LUA_MINBUFFER)
-#define LUA_MINBUFFER 32
-#endif
-
-
-/*
-** macros that are executed whenever program enters the Lua core
-** ('lua_lock') and leaves the core ('lua_unlock')
-*/
-#if !defined(lua_lock)
-#define lua_lock(L) ((void) 0)
-#define lua_unlock(L) ((void) 0)
-#endif
-
-/*
-** macro executed during Lua functions at points where the
-** function can yield.
-*/
-#if !defined(luai_threadyield)
-#define luai_threadyield(L) {lua_unlock(L); lua_lock(L);}
-#endif
-
-
-/*
-** these macros allow user-specific actions on threads when you defined
-** LUAI_EXTRASPACE and need to do something extra when a thread is
-** created/deleted/resumed/yielded.
-*/
-#if !defined(luai_userstateopen)
-#define luai_userstateopen(L) ((void)L)
-#endif
-
-#if !defined(luai_userstateclose)
-#define luai_userstateclose(L) ((void)L)
-#endif
-
-#if !defined(luai_userstatethread)
-#define luai_userstatethread(L,L1) ((void)L)
-#endif
-
-#if !defined(luai_userstatefree)
-#define luai_userstatefree(L,L1) ((void)L)
-#endif
-
-#if !defined(luai_userstateresume)
-#define luai_userstateresume(L,n) ((void)L)
-#endif
-
-#if !defined(luai_userstateyield)
-#define luai_userstateyield(L,n) ((void)L)
-#endif
-
-
-
-/*
-** The luai_num* macros define the primitive operations over numbers.
-*/
-
-/* floor division (defined as 'floor(a/b)') */
-#if !defined(luai_numidiv)
-#define luai_numidiv(L,a,b) ((void)L, l_floor(luai_numdiv(L,a,b)))
-#endif
-
-/* float division */
-#if !defined(luai_numdiv)
-#define luai_numdiv(L,a,b) ((a)/(b))
-#endif
-
-/*
-** modulo: defined as 'a - floor(a/b)*b'; this definition gives NaN when
-** 'b' is huge, but the result should be 'a'. 'fmod' gives the result of
-** 'a - trunc(a/b)*b', and therefore must be corrected when 'trunc(a/b)
-** ~= floor(a/b)'. That happens when the division has a non-integer
-** negative result, which is equivalent to the test below.
-*/
-#if !defined(luai_nummod)
-#define luai_nummod(L,a,b,m) \
- { (m) = l_mathop(fmod)(a,b); if ((m)*(b) < 0) (m) += (b); }
-#endif
-
-/* exponentiation */
-#if !defined(luai_numpow)
-#define luai_numpow(L,a,b) ((void)L, l_mathop(pow)(a,b))
-#endif
-
-/* the others are quite standard operations */
-#if !defined(luai_numadd)
-#define luai_numadd(L,a,b) ((a)+(b))
-#define luai_numsub(L,a,b) ((a)-(b))
-#define luai_nummul(L,a,b) ((a)*(b))
-#define luai_numunm(L,a) (-(a))
-#define luai_numeq(a,b) ((a)==(b))
-#define luai_numlt(a,b) ((a)<(b))
-#define luai_numle(a,b) ((a)<=(b))
-#define luai_numisnan(a) (!luai_numeq((a), (a)))
-#endif
-
-
-
-
-
-/*
-** macro to control inclusion of some hard tests on stack reallocation
-*/
-#if !defined(HARDSTACKTESTS)
-#define condmovestack(L,pre,pos) ((void)0)
-#else
-/* realloc stack keeping its size */
-#define condmovestack(L,pre,pos) \
- { int sz_ = (L)->stacksize; pre; luaD_reallocstack((L), sz_); pos; }
-#endif
-
-#if !defined(HARDMEMTESTS)
-#define condchangemem(L,pre,pos) ((void)0)
-#else
-#define condchangemem(L,pre,pos) \
- { if (G(L)->gcrunning) { pre; luaC_fullgc(L, 0); pos; } }
-#endif
-
-#endif
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