http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48511
--- Comment #5 from Thomas Henlich <thenlich at users dot sourceforge.net> 2011-04-10 10:19:47 UTC --- (In reply to comment #4) > (In reply to comment #3) > > Does any of the Fortran edit descriptors require, or for that matter allow, > > this kind of "shortest decimal representation" output? > > Well, the obvious(?) answer is the various descriptors with 0 width. Not quite: Since we're not talking about the shortest width (w) but the smallest number of decimal digits in the fraction (d), only those descriptors where we can select "a processor-dependent reasonable value for d" can be "shortened": That would be list-directed and G0 (but not G0.d). For all others the algorithm is still useful if we append zeros to fill the required width: it is better to print 0.3000000 than 0.2999996 I'm still not sure where the Fortran standard says "a processor-dependent reasonable value for d" that includes a "processor-dependent reasonable value for d which also depends on the internal value to be printed" because that would mess up tabular aligment for printing. This might be a feature users rely on.
