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- Subject: Automatic string <> number conversion, what about INF, NaN?
- From: "Albert-Jan Brouwer" <acj.brouwer@...>
- Date: Fri, 13 Dec 2002 12:19:18 +0100
Lua and its API (lua_tostring() lua_tonumber()) does automatic
conversion between numbers and strings representing numbers.
This symmetry seems to be broken for special floating point
values representing +/- infinity or various "not a numbers".
E.g.
< infinity = 1/0
< print(infinity)
> 1.#INF
< print(math.sin(infinity))
> -1.#IND
< print(math.sin("1.#INF"))
> bad argument #1 to `sin' (number expected, got string)
Why?
