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llvm/flang/docs
Peter Klausler 80fa3bddd0 [flang] Implement FNUM() (#159433)
The GNU Fortran library function FNUM(u) returns the UNIX file
descriptor that corresponds to an open Fortran unit number, if any;
otherwise -1.

This implementation is a library extension only, not an intrinsic.
2025-09-19 08:09:39 -07:00
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