> ----- Original Message ----- 
> From: "John Weller" <[email protected]>


> Could you explain why there can only be 65128 different values?


At the first turn , you have 256 seeding possibilities. You randomize.

Then you multiply this value (between 0 and 1) by an ascii code (between 0 
and 255), then take the integer of it ;
the minimum value of the result is 0 * 0 => 0, and the maximum value is 1 * 
255 => 255 , so this integer has also only 256 possibilities !
At each turn you don't increase the number of possibilities for seeding 
because you take the integer at the previous turn, and by induction it will 
be so until the end.

So, to calculate the number of possibilities, it is sufficient to examine 
turn 1 and 2 (without integering the result as if turn 2 was turn 20).

[VFP]

CREATE CURSOR test (s1 c(1),s2 c(1), r1 n(10,8),r2 n(13,8))

FOR i = 0 TO 255
 FOR j = 0 TO 255
  INSERT INTO test VALUES (CHR(i),CHR(j),RAND(i),r1*j)
 ENDF
ENDF

SELECT COUNT(distinct r2) FROM test

[/VFP]

Oops, sorry it was 65281, not 65128 ; its better :o))))))))))))))))))

Gérard. 



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