nim-random not that random at all?

[Bernd]

Hey there!

I have been playing with nim for a few days. Now I stumbled upon a behavior 
that I do not understand. 

The random generator does not behave like I expect.
    
    
    import random
    randomize()
    echo random(1280)
    

This should echo a "random" number between 0 and 1280 (-1) right? Well, it 
does, kind of.

* * *
    
    
    nim c -r rnd.nim
    1118
    
    
    
    nim c -r rnd.nim
    1117
    
    
    
    nim c -r rnd.nim
    1116
    
    
    
    nim c -r rnd.nim
    1116
    
    
    
    nim c -r rnd.nim
    1117
    

* * *

This one behaves more random:
    
    
    import random
    randomize()
    
    for i in 1..10
       echo random(1200)
    
    
    
    nim c -r rnd.nim
    841
    1014
    609
    635
    547
    574
    1171
    233
    280
    595
    
    
    
    nim c -r rnd.nim
    780
    275
    1029
    985
    1143
    865
    686
    97
    945
    858
    
    
    
    nim c -r rnd.nim
    793
    166
    604
    244
    338
    868
    482
    281
    173
    7
    

* * *

Is there a smarter way to create a random number with min/max value?