Portable mini-vfprintf?

[Jef Poskanzer]

To support floating-point output in the mini-vfprintf, I added a call
to gcvt.  How portable is this?

Chris Torek suggested I just call _doprnt instead of vfprintf - same
args, different order.  How portable is this?

People have gotten the current version of pbmplus working under VMS and
MS-DOS, and I don't want to lose that.
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Jef
                                   
  Jef Poskanzer  jef at well.sf.ca.us  {apple, ucbvax, hplabs}!well!jef