[flang] Implement FNUM() #159433
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[flang] Implement FNUM() #159433
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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.
eugeneepshteyn
approved these changes
Sep 17, 2025
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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.