This package contains the routines for Ada.Text_IO.Float_IO that are
shared among separate instantiations of this package. The routines in
this package are identical semantically to those in Float_IO itself,
except that generic parameter Num has been replaced by Long_Long_Float,
and the default parameters have been removed because they are supplied
explicitly by the calls from within the generic template. This package
is also used by Ada.Text_IO.Fixed_IO, and Ada.Text_IO.Decimal_IO.