luaV_arith
luaV_arith(L, o1, o1, o2, cast(TMS, op - LUA_OPADD + TM_ADD));
else { Protect(luaV_arith(L, ra, rb, rc, tm)); } }
Protect(luaV_arith(L, ra, rb, rb, TM_UNM));
LUAI_FUNC void luaV_arith (lua_State *L, StkId ra, const TValue *rb,