[Jbeta] dyad p: sometime tolerant

[bill lam]

when testing totient in J601 beta j, found that depending on left argument, dyad 
p: sometime tolerant, sometime not. Is this a bug?
   1 2 3 4 5 <@p:"(0) 10
+-+---+---+--+-+
|0|2 5|2 5|11|4|
| |1 1|   |  | |
+-+---+---+--+-+
       1 p: +/1000#0.01
|domain error
|   1     p:+/1000#0.01
       2 p: +/1000#0.01
2 5
1 1
       3 p: +/1000#0.01
2 5
       4 p: +/1000#0.01
11
       5 p: +/1000#0.01
|domain error
|   5     p:+/1000#0.01
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