GNU Info

(g77-295.info)Better List-directed I/O

---

Next: Default to Console I/O Prev: Portable Unformatted Files Up: Missing Features

---

Enter node , (file) or (file)node

Better List-directed I/O
------------------------

   Values output using list-directed I/O (`PRINT *, R, D') should be
written with a field width, precision, and so on appropriate for the
type (precision) of each value.

   (Currently, no distinction is made between single-precision and
double-precision values by `libf2c'.)

   It is likely this item will require the `libg77' project to be
undertaken.

   In the meantime, use of formatted I/O is recommended.  While it
might be of little consolation, `g77' does support
`FORMAT(F<WIDTH>.4)', for example, as long as `WIDTH' is defined as a
named constant (via `PARAMETER').  That at least allows some
compile-time specification of the precision of a data type, perhaps
controlled by preprocessing directives.