| 124 | |
| 125 | |
| 126 | static int b_arshift (lua_State *L) { |
| 127 | lua_Unsigned r = checkunsigned(L, 1); |
| 128 | lua_Integer i = luaL_checkinteger(L, 2); |
| 129 | if (i < 0 || !(r & ((lua_Unsigned)1 << (LUA_NBITS - 1)))) |
| 130 | return b_shift(L, r, -i); |
| 131 | else { /* arithmetic shift for 'negative' number */ |
| 132 | if (i >= LUA_NBITS) r = ALLONES; |
| 133 | else |
| 134 | r = trim((r >> i) | ~(trim(~(lua_Unsigned)0) >> i)); /* add signal bit */ |
| 135 | pushunsigned(L, r); |
| 136 | return 1; |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | |
| 141 | static int b_rot (lua_State *L, lua_Integer d) { |
nothing calls this directly
no test coverage detected