How can I force float->double promotion for argument passing on PPC?

[Jeffrey A Law]

  In message < 00031322443600.01198@enzo.bigblue.local >you write:
  > Am Mon, 13 Mar 2000 schrieb David Edelsohn:
  > >I believe that this is fixed in the development sources on the
  > >newppc-branch.  At one point there was concern about breaking backward
  > >compatbility, but that has been resolved.
  > 
  > No, the newppc-branch still shows the same behaviour.
I do not think the behavior you want is not something we want to do -- unless
I'm misunderstanding something about this discussion.

Please see the GCC manual's discussion of float vs double promotion for
arguments.

jeff