diff options
Diffstat (limited to 'lvm.c')
| -rw-r--r-- | lvm.c | 14 |
1 files changed, 7 insertions, 7 deletions
| @@ -1,5 +1,5 @@ | |||
| 1 | /* | 1 | /* |
| 2 | ** $Id: lvm.c,v 2.195 2014/04/09 17:05:11 roberto Exp roberto $ | 2 | ** $Id: lvm.c,v 2.196 2014/04/11 19:02:16 roberto Exp roberto $ |
| 3 | ** Lua virtual machine | 3 | ** Lua virtual machine |
| 4 | ** See Copyright Notice in lua.h | 4 | ** See Copyright Notice in lua.h |
| 5 | */ | 5 | */ |
| @@ -88,7 +88,7 @@ int luaV_tostring (lua_State *L, StkId obj) { | |||
| 88 | */ | 88 | */ |
| 89 | int luaV_numtointeger (lua_Number n, lua_Integer *p) { | 89 | int luaV_numtointeger (lua_Number n, lua_Integer *p) { |
| 90 | if (cast_num(LUA_MININTEGER) <= n && n < (LUA_MAXINTEGER + cast_num(1))) { | 90 | if (cast_num(LUA_MININTEGER) <= n && n < (LUA_MAXINTEGER + cast_num(1))) { |
| 91 | *p = cast_integer(n); | 91 | *p = cast(lua_Integer, n); |
| 92 | lua_assert(cast_num(*p) == n); | 92 | lua_assert(cast_num(*p) == n); |
| 93 | return 1; | 93 | return 1; |
| 94 | } | 94 | } |
| @@ -343,7 +343,7 @@ void luaV_objlen (lua_State *L, StkId ra, const TValue *rb) { | |||
| 343 | 343 | ||
| 344 | 344 | ||
| 345 | lua_Integer luaV_div (lua_State *L, lua_Integer x, lua_Integer y) { | 345 | lua_Integer luaV_div (lua_State *L, lua_Integer x, lua_Integer y) { |
| 346 | if (cast_unsigned(y) + 1u <= 1u) { /* special cases: -1 or 0 */ | 346 | if (cast_s2u(y) + 1u <= 1u) { /* special cases: -1 or 0 */ |
| 347 | if (y == 0) | 347 | if (y == 0) |
| 348 | luaG_runerror(L, "attempt to divide by zero"); | 348 | luaG_runerror(L, "attempt to divide by zero"); |
| 349 | return intop(-, 0, x); /* y==-1; avoid overflow with 0x80000...//-1 */ | 349 | return intop(-, 0, x); /* y==-1; avoid overflow with 0x80000...//-1 */ |
| @@ -359,7 +359,7 @@ lua_Integer luaV_div (lua_State *L, lua_Integer x, lua_Integer y) { | |||
| 359 | 359 | ||
| 360 | 360 | ||
| 361 | lua_Integer luaV_mod (lua_State *L, lua_Integer x, lua_Integer y) { | 361 | lua_Integer luaV_mod (lua_State *L, lua_Integer x, lua_Integer y) { |
| 362 | if (cast_unsigned(y) + 1u <= 1u) { /* special cases: -1 or 0 */ | 362 | if (cast_s2u(y) + 1u <= 1u) { /* special cases: -1 or 0 */ |
| 363 | if (y == 0) | 363 | if (y == 0) |
| 364 | luaG_runerror(L, "attempt to perform 'n%%0'"); | 364 | luaG_runerror(L, "attempt to perform 'n%%0'"); |
| 365 | return 0; /* y==-1; avoid overflow with 0x80000...%-1 */ | 365 | return 0; /* y==-1; avoid overflow with 0x80000...%-1 */ |
| @@ -398,11 +398,11 @@ lua_Integer luaV_pow (lua_State *L, lua_Integer x, lua_Integer y) { | |||
| 398 | lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y) { | 398 | lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y) { |
| 399 | if (y < 0) { /* shift right? */ | 399 | if (y < 0) { /* shift right? */ |
| 400 | if (y <= -NBITS) return 0; | 400 | if (y <= -NBITS) return 0; |
| 401 | else return cast_integer(cast_unsigned(x) >> (-y)); | 401 | else return intop(>>, x, -y); |
| 402 | } | 402 | } |
| 403 | else { /* shift left */ | 403 | else { /* shift left */ |
| 404 | if (y >= NBITS) return 0; | 404 | if (y >= NBITS) return 0; |
| 405 | else return x << y; | 405 | else return intop(<<, x, y); |
| 406 | } | 406 | } |
| 407 | } | 407 | } |
| 408 | 408 | ||
| @@ -792,7 +792,7 @@ void luaV_execute (lua_State *L) { | |||
| 792 | TValue *rb = RB(i); | 792 | TValue *rb = RB(i); |
| 793 | lua_Integer ib; | 793 | lua_Integer ib; |
| 794 | if (tointeger(rb, &ib)) { | 794 | if (tointeger(rb, &ib)) { |
| 795 | setivalue(ra, intop(^, cast_integer(-1), ib)); | 795 | setivalue(ra, intop(^, ~cast_s2u(0), ib)); |
| 796 | } | 796 | } |
| 797 | else { | 797 | else { |
| 798 | Protect(luaT_trybinTM(L, rb, rb, ra, TM_BNOT)); | 798 | Protect(luaT_trybinTM(L, rb, rb, ra, TM_BNOT)); |
