%g format in printf

[Roland McGrath]

In article <1439 at hiatus.dec.com> daniels at grue.dec.com (Bradford R. Daniels) writes:

   What should the default number of significant digits be for the
   %g format specifier in printf?  The standard says that an explicit
   0 should be treated as a 1, but doesn't say anything about what to
   do if no precision is specified.

   Right now, the VAX C RTL uses 6 as the default precision.  This
   seems reasonable, since 6 is the default precision for the %e
   and %f specifiers.  However, precision has a different meaning
   with %g than with those other specifiers.  Is VAXCRTL's current
   behavior correct?

Yes.  The ANSI standard does specify that the default precision is 6.
--
	Roland McGrath
	Free Software Foundation, Inc.
roland at ai.mit.edu, uunet!ai.mit.edu!roland