Re: ncl strange calculation problem

Thank you for the quick reply and the good answers unfortunately my array is with many positive and negative values and the trick you suggest is not applicable directly. anyway i will try to find to make use of what you suggest. Regards, -SK      On Tuesday, December 17, 2013 9:24 PM, Dennis Shea <shea_at_ucar.edu> wrote: Also ncl 0> x = 17.8^0.4 ncl 1> print(x) Variable: x Type: float Total Size: 4 bytes             1 values Number of Dimensions: 1 Dimensions and sizes:  [1] Coordinates: (0)    3.163501 ncl 2> print(-(17.8^0.4)) (0)    -3.163501 On 12/17/13, 11:19 AM, Rick Brownrigg wrote: > This doesn't really answer your question, but I'll note: > > - my calculator returns "-E-" > - C/C++/Java all return NaN > - Python returns the same result as your calculator > > The man-page on C/C++'s "pow()" function state: > >    pow(x,y) >    ….. >    A domain error occurs if x is finite and negative and y is finite and not an integer. > > (under MacOSX;  similar verbage under Linux) > > Ncl undoubtably uses the pow() for its computation. > > > On Dec 17, 2013, at 7:00 AM, sk <sdk0084_at_yahoo.com> wrote: > >> in ncl: >> print(-17.8^0.4) >> (0)    nan >> >> in standard calculator the result is: -3.163501181 >> some explanation? >> >> Thx! >> -SK >> >> _______________________________________________ >> ncl-talk mailing list >> List instructions, subscriber options, unsubscribe: >> http://mailman.ucar.edu/mailman/listinfo/ncl-talk > > > > > _______________________________________________ > ncl-talk mailing list > List instructions, subscriber options, unsubscribe: > http://mailman.ucar.edu/mailman/listinfo/ncl-talk >

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Received on Tue Dec 17 22:53:05 2013