Re: maxval,product, etc with mask all false

From: James Van Buskirk (not_valid_at_comcast.net)
Date: 05/11/04

  • Next message: Carlie J. Coats: "Re: Code speedup" 
    Date: Tue, 11 May 2004 01:16:49 GMT

    "Richard Maine" <nospam@see.signature> wrote in message
    news:m1r7tsrwpc.fsf@macfortran.local...

    > All these cases should be documented in any Fortran text. In general,
    > they return a "reasonable" extrapolation to the zero-size condition,
    > but the extrapolation is different for different cases. For example,
    > product is different from maxval/minval. Thus, although I can give
    > you the specific answers for those 3, I can't answer the "such as"
    > part of your question in other than the above very general terms. Do
    > note that having all elements of the mask be zero is just like having
    > a zero-sized array with no mask - that might help your intuition about
    > what the "reasonable" extrapolation is likely to be. I do recommend a
    > textbook for things like this (any textbook).

    The "such as" doesn't seem like such a long list:

    SUM: Zero
    COUNT: 0
    ANY: .FALSE.
    ALL: .TRUE.
    MAXLOC & MINLOC: A processor-dependent result in F95; zero
    is broadcast into the result in F03 -- thanks again for
    making this change. 

    -- 
write(*,*) transfer((/17.392111325966148d0,6.5794487871554595D-85, &
6.0134700243160014d-154/),(/'x'/)); end
  • Next message: Carlie J. Coats: "Re: Code speedup"

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