short circuit evaluation in array logical operations

Hello,

It seems short circuit evaluation in logical operations does not work for
arrays.
ncl 11> v = new(1,integer)
ncl 12> v = -999
ncl 13> print( (.not.ismissing(v)) .and. (v.le.0) )
(0) False
ncl 14> a = new(3,integer)
ncl 15> a = (/-1,-999,1/)
ncl 16> print( (.not.ismissing(a)) .and. (a.le.0) )
(0) True
(1) Missing
(2) False
b(1) is Missing, VERY inconvenient, workaround is necessary.

Regards,
Slava

P.S. I do not like missing logical values in NCL. It is not binary logic,
but ternary logic, a lot of problems for people coming to NCL from "common"
languages.

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Received on Fri Oct 02 2009 - 08:49:56 MDT