On Tue, Dec 2, 2008 at 3:05 PM, Stuart Halloway
<[EMAIL PROTECTED]> wrote:
>
> nextDouble calls next, which according to Java 5 docs is:
>
> synchronized protected int next(int bits) {
> seed = (seed * 0x5DEECE66DL + 0xBL) & ((1L << 48) - 1);
> return (int)(seed >>> (48 - bits));
> }
>
> This is exactly the kind of thing I think we shouldn't have to worry
> about in Clojure.
The docs for Math.random() say:
; When this method is first called, it creates a single
; new pseudorandom-number generator, exactly as if by
; the expression
;
; new java.util.Random
;
; This new pseudorandom-number generator is used
; thereafter for all calls to this method and is used
; nowhere else.
;
; This method is properly synchronized to allow correct
; use by more than one thread. However, if many threads
; need to generate pseudorandom numbers at a great rate,
; it may reduce contention for each thread to have its
; own pseudorandom-number generator.
So can't you just create multiple instances of java.util.Random if you
need that sort of thing?
--
Michael Wood <[EMAIL PROTECTED]>
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