[MPI3 Fortran] Results of recent J3 Fortran meeting
nmm1 at cam.ac.uk
Thu Oct 21 12:11:49 CDT 2010
On Oct 21 2010, Rolf Rabenseifner wrote:
>>From MPI view-point:
>We clearly need to get exactly the information
>that would be returned by
> - LEN(dummy_arg) ..... in case of CHARACTER*(*) dummy_arg
> - LEN(dummy_arg(1)) .. in case of CHARACTER*(*) dummy_arg(*)
> - LEN(dummy_arg(1,1)) in case of CHARACTER*(*) dummy_arg(dim1,*)
>If I understood correctly, then this is CHOICE 3 in the mail below.
You didn't. That's possible in all three choices. Take another look
at Malcolm's C code.
On Oct 21 2010, Rasmussen, Craig E wrote:
>> Nitpick: that's "assumed length", "assumed size" is about arrays. I
>> know this terminology is confusing, with assumed size, shape, length,
>> rank, type ... but since the paper does both assumed length (for
>> characters), and also does passing assumed-size arrays to assumed-rank
>> dummies, we need to get the terms right to avoid even more confusion!
>assumed length => character strings
>assumed size => arrays
>so they aren't both about arrays, correct?
It's not as simple as that once you bring in sequence association. You
can reasonably regard the length of a character variable as being a
hidden first dimension. There is no sense in which assumed length
variables correspond with strings in almost any other current language.
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