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- Subject: Re: math.random() when lua_Number is int
- From: Graham Wilson <graham@...>
- Date: Tue, 6 Sep 2005 22:24:22 -0500
On Wed, Sep 07, 2005 at 10:14:20AM +0700, Antero Vipunen wrote:
> Graham Wilson wrote:
> >int r = rand()%RAND_MAX;
> >lua_pushnumber(L, (lua_Number)r / (lua_Number)RAND_MAX); /* Number
> >between 0 and 1 */
> Simple mathematics shows us that this will always push 0. Because:
> 0 <= r < RAND_MAX and so r/RAND_MAX == 0.
True, but we can't really expect more when the function returns an int.
I suppose math.random with no arguments could be changed to return just
r when lua_Number is an int, but I'm not sure if that would be a really