Fortran C interoperabiltiy documentation
NightStrike
nightstrike@gmail.com
Fri Jun 21 21:47:00 GMT 2019
https://gcc.gnu.org/onlinedocs/gfortran/Working-with-Pointers.html
"If a pointer is a dummy-argument of an interoperable procedure, it
usually has to be declared using the VALUE attribute. void* matches
TYPE(C_PTR), VALUE, while TYPE(C_PTR) alone matches void**."
What does "usually" mean in this context? Under what conditions do we
have to do this?
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