https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95640
--- Comment #15 from Steve Kargl <sgk at troutmask dot apl.washington.edu> --- On Fri, Jun 12, 2020 at 03:33:20PM +0000, anlauf at gcc dot gnu.org wrote: > --- Comment #14 from anlauf at gcc dot gnu.org --- > Why don't we simply set IEEE_SUPPORT_DATATYPE (1._10) to .false.? > > use, intrinsic :: ieee_arithmetic > print *, ieee_support_datatype (1._10) > end > > We currently print 'T'. > Because REAL(10) is a valid IEEE-754 format. Some may want REAL(10) because it is sufficient for their numerical problem and it is done in hardware. REAL(16) is a software implementation (can you say slow).
