OpenEuphoria

Re: 32-bit random numbers

• Posted by Derek Parnell <ddparnell at bigpond.com> Jul 03, 2004
• 579 views

Juergen Luethje wrote:
> 
> Hi all,
> 
> for Euphoria's function rand(x), x may only be from 1 to the largest
> positive value of type integer (#3FFFFFFF).
> 
> I would like to have a function, that can take any unsigned 32-bit integer
> -- i.e. in the interval [0,#FFFFFFFF] -- as argument. Any ideas?

You could try something like this...

 object vOldSeed vOldSeed = #69F5C10D
 function rand32()
    vOldSeed = vOldSeed * date()
vOldSeed = vOldSeed[1] + vOldSeed[2] + vOldSeed[3] + vOldSeed[4] +
    vOldSeed[5] + vOldSeed[6]
    vOldSeed += time() * (time() + 17)
    vOldSeed = floor(remainder(vOldSeed * (vOldSeed - 3), #3FFFFFFF))
    set_rand(vOldSeed)
return and_bits(rand(#3FFFFFFF), #FFFF) * #10000 + and_bits(rand(#3FFFFFFF),
    #FFFF)
 end function

-- 
Derek Parnell
Melbourne, Australia