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Diffstat (limited to 'Build/source/texk/web2c/luatexdir/bitlib/lbitlib.c')
-rw-r--r--Build/source/texk/web2c/luatexdir/bitlib/lbitlib.c287
1 files changed, 0 insertions, 287 deletions
diff --git a/Build/source/texk/web2c/luatexdir/bitlib/lbitlib.c b/Build/source/texk/web2c/luatexdir/bitlib/lbitlib.c
deleted file mode 100644
index 5187bbff0dc..00000000000
--- a/Build/source/texk/web2c/luatexdir/bitlib/lbitlib.c
+++ /dev/null
@@ -1,287 +0,0 @@
-/*
-** $Id: lbitlib.c,v 1.16 2011/06/20 16:35:23 roberto Exp $
-** Standard library for bitwise operations
-** See Copyright Notice in lua.h
-*/
-
-#define lbitlib_c
-#define LUA_LIB
-
-#include "lua.h"
-
-#include "lauxlib.h"
-#include "lualib.h"
-
-#include "lj_obj.h"
-#include "lj_state.h"
-
-/* http://lua-users.org/lists/lua-l/2011-01/msg01039.html */
-typedef unsigned int lua_Unsigned;
-#define LUA_UNSIGNED unsigned LUA_INT32
-
-
-#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)( unsigned int )(u))
-#endif
-
-#if !defined(lua_lock)
-#define lua_lock(L) ((void) 0)
-#define lua_unlock(L) ((void) 0)
-#endif
-
-
-LUA_API void lua_pushunsigned (lua_State *L, lua_Unsigned u) {
- lua_Number n=0;
- lua_lock(L);
-/* printf("u=%d,%u,%x\n",u,u,u);
- printf("INT_MAX=%d %u %x, (lua_Unsigned)INT_MAX=%d %u %x (unsigned int)INT_MAX=%d %u %x\n",
- INT_MAX,INT_MAX,INT_MAX,
- (lua_Unsigned)INT_MAX,(lua_Unsigned)INT_MAX,(lua_Unsigned)INT_MAX,
- (unsigned int)INT_MAX,(unsigned int)INT_MAX,(unsigned int)INT_MAX);
- printf("((u) <= (lua_Unsigned)INT_MAX) :%d\n",(((unsigned int)u) <= (lua_Unsigned)INT_MAX));
- printf("(lua_Number)(int)(u) =%d,%u,%x\n",(lua_Number)(int)(u),(lua_Number)(int)(u),(lua_Number)(int)(u));
- printf("(lua_Number)(u) =%f,%u,%x\n",(lua_Number)(u),(lua_Number)(u),(lua_Number)(u));
- printf("u=%d,%u,%x\n",u,u,u);
-*/
- /*printf("n=%d,%u,%x u=%d,%u,%x\n",n,n,n,u,u,u); */
- n = lua_unsigned2number(u);
-/* printf("n=%f \n",n);
- printf("u=%d %u %x n=%d %u %x\n",u,u,u,n,n,n);
- printf("n=%d %u %x\n",n,n,n);
- printf("u=%d,%u,%x\n",u,u,u);
-*/
-/* setintptrV(L->top, n);
- incr_top(L);
- setnumV(L->top, n);
-*/
- setnumV(L->top, n);
- if (LJ_UNLIKELY(tvisnan(L->top)))
- setnanV(L->top); /* Canonicalize injected NaNs. */
- incr_top(L);
- /*setnvalue(L->top, n);
- api_incr_top(L);
- */
- lua_unlock(L);
-}
-
-
-
-
-
-
-#define luaL_checkunsigned (lua_Unsigned) luaL_checkinteger
-/*#define lua_pushunsigned lua_pushinteger*/
-
-
-
-/* number of bits to consider in a number */
-#if !defined(LUA_NBITS)
-#define LUA_NBITS 32
-#endif
-
-
-#define ALLONES (~(((~(lua_Unsigned)0) << (LUA_NBITS - 1)) << 1))
-
-/* macro to trim extra bits */
-#define trim(x) ((x) & ALLONES)
-
-
-/* builds a number with 'n' ones (1 <= n <= LUA_NBITS) */
-#define mask(n) (~((ALLONES << 1) << ((n) - 1)))
-
-
-typedef lua_Unsigned b_uint;
-
-
-
-static b_uint andaux (lua_State *L) {
- int i, n = lua_gettop(L);
- b_uint r = ~(b_uint)0;
-/* printf("1 r=%d,%u,%x\n",r,r,r);*/
- for (i = 1; i <= n; i++)
- r &= luaL_checkunsigned(L, i);
-/* printf("2 r=%d,%u,%x\n",r,r,r);
- printf("3 r=%d,%u,%x\n",trim(r),trim(r),trim(r));
-*/
- return trim(r);
-}
-
-
-static int b_and (lua_State *L) {
- b_uint r = andaux(L);
-/* printf("4 r=%d,%u,%x\n",r,r,r);*/
- lua_pushunsigned(L, r);
- return 1;
-}
-
-
-static int b_test (lua_State *L) {
- b_uint r = andaux(L);
- lua_pushboolean(L, r != 0);
- return 1;
-}
-
-
-static int b_or (lua_State *L) {
- int i, n = lua_gettop(L);
- b_uint r = 0;
- for (i = 1; i <= n; i++)
- r |= luaL_checkunsigned(L, i);
- lua_pushunsigned(L, trim(r));
- return 1;
-}
-
-
-static int b_xor (lua_State *L) {
- int i, n = lua_gettop(L);
- b_uint r = 0;
- for (i = 1; i <= n; i++)
- r ^= luaL_checkunsigned(L, i);
- lua_pushunsigned(L, trim(r));
- return 1;
-}
-
-
-static int b_not (lua_State *L) {
- b_uint r = ~luaL_checkunsigned(L, 1);
- lua_pushunsigned(L, trim(r));
- return 1;
-}
-
-
-static int b_shift (lua_State *L, b_uint r, int i) {
- if (i < 0) { /* shift right? */
- i = -i;
- r = trim(r);
- if (i >= LUA_NBITS) r = 0;
- else r >>= i;
- }
- else { /* shift left */
- if (i >= LUA_NBITS) r = 0;
- else r <<= i;
- r = trim(r);
- }
- lua_pushunsigned(L, r);
- return 1;
-}
-
-
-static int b_lshift (lua_State *L) {
- return b_shift(L, luaL_checkunsigned(L, 1), luaL_checkint(L, 2));
-}
-
-
-static int b_rshift (lua_State *L) {
- return b_shift(L, luaL_checkunsigned(L, 1), -luaL_checkint(L, 2));
-}
-
-
-static int b_arshift (lua_State *L) {
- b_uint r = luaL_checkunsigned(L, 1);
- int i = luaL_checkint(L, 2);
- if (i < 0 || !(r & ((b_uint)1 << (LUA_NBITS - 1))))
- return b_shift(L, r, -i);
- else { /* arithmetic shift for 'negative' number */
- if (i >= LUA_NBITS) r = ALLONES;
- else
- r = trim((r >> i) | ~(~(b_uint)0 >> i)); /* add signal bit */
- lua_pushunsigned(L, r);
- return 1;
- }
-}
-
-
-static int b_rot (lua_State *L, int i) {
- b_uint r = luaL_checkunsigned(L, 1);
- i &= (LUA_NBITS - 1); /* i = i % NBITS */
- r = trim(r);
- r = (r << i) | (r >> (LUA_NBITS - i));
- lua_pushunsigned(L, trim(r));
- return 1;
-}
-
-
-static int b_lrot (lua_State *L) {
- return b_rot(L, luaL_checkint(L, 2));
-}
-
-
-static int b_rrot (lua_State *L) {
- return b_rot(L, -luaL_checkint(L, 2));
-}
-
-
-/*
-** get field and width arguments for field-manipulation functions,
-** checking whether they are valid
-*/
-static int fieldargs (lua_State *L, int farg, int *width) {
- int f = luaL_checkint(L, farg);
- int w = luaL_optint(L, farg + 1, 1);
- luaL_argcheck(L, 0 <= f, farg, "field cannot be negative");
- luaL_argcheck(L, 0 < w, farg + 1, "width must be positive");
- if (f + w > LUA_NBITS)
- luaL_error(L, "trying to access non-existent bits");
- *width = w;
- return f;
-}
-
-
-static int b_extract (lua_State *L) {
- int w;
- b_uint r = luaL_checkunsigned(L, 1);
- int f = fieldargs(L, 2, &w);
- r = (r >> f) & mask(w);
- lua_pushunsigned(L, r);
- return 1;
-}
-
-
-static int b_replace (lua_State *L) {
- int w;
- b_uint r = luaL_checkunsigned(L, 1);
- b_uint v = luaL_checkunsigned(L, 2);
- int f = fieldargs(L, 3, &w);
- int m = mask(w);
- v &= m; /* erase bits outside given width */
- r = (r & ~(m << f)) | (v << f);
- lua_pushunsigned(L, r);
- return 1;
-}
-
-
-static const luaL_Reg bitlib[] = {
- {"arshift", b_arshift},
- {"band", b_and},
- {"bnot", b_not},
- {"bor", b_or},
- {"bxor", b_xor},
- {"btest", b_test},
- {"extract", b_extract},
- {"lrotate", b_lrot},
- {"lshift", b_lshift},
- {"replace", b_replace},
- {"rrotate", b_rrot},
- {"rshift", b_rshift},
- {NULL, NULL}
-};
-
-
-
-/* http://lua-users.org/lists/lua-l/2011-01/msg01039.html */
-
-/*LUAMOD_API int luaopen_bit32 (lua_State *L) {*/
-/* luaL_newlib(L, bitlib);*/
-/* return 1;*/
-/*} */
-
-int luaopen_bit32 (lua_State *L) {
- luaL_register(L, "bit32", bitlib);
- return 1;
-}
-
-
-
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