http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48047
kargl at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kargl at gcc dot gnu.org --- Comment #1 from kargl at gcc dot gnu.org 2011-03-09 18:01:42 UTC --- gfortran does not claim conformance to IEEE 754, and gfortran currently does not include even a crude implementation of the IEEE 754 intrinsic modules. gfortran doesn't even guarantee 36 decimal digits in its REAL(16) type program z print '(I0,1X,I0)', digits(1.e0_8), digits(1.e0_16) print '(I0,1X,I0)', precision(1.e0_8), precision(1.e0_16) end program z troutmask:sgk[213] gfc4x -o z d.f90 && ./z 53 113 15 33 It is unclear what you want to happen here.