Fortran - Re: TRANSFER on LOGICALs

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Re: TRANSFER on LOGICALs

glen herrmannsfeldt

2008-01-22, 7:27 pm

James Giles wrote:

(snip)

> The point is that your program can't portably make *any*
> assumptions about TRANSFERred data (other than the property
> that immediately TRANSFERring back yields the original value,
> provided the intermediate type is big enough). It's best to avoid
> TRANSFER unless nothing else works at all.

Yes. Also, INTEGER values may have padding bits that
aren't copied on assignment. Floating point values
might be normalized on assignment.

In C, copies to/from arrays of unsigned char are guaranteed
to work, otherwise the same statement applies to C.

-- glen

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