The left argument of ^. Is the desired base. So:
log10 234
2.36922
10^. 234
2.36922
Be happy. Your function works! Linda
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Alex
Giannakopoulos
Sent: Tuesday, June 10, 2014 6:43 AM
To: J Programming forum
Subject: [Jprogramming] Log base 10
Which of these two is the more efficient (if there's any difference) and is
there any way way mere mortals can tell?
log10 =: 10 %&^.~ ]
logb10 =: 10&^inv
Further, if I only wanted to find the order of a given +ve integer
would it be better to do <. @ log10 (or <. @ logb10)
or something like:
<:@#@(10&#. inv)
Thanks
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