HP Fortran Programmer's Guide (B3908-90031; September 2011)

Controlling data storage
Increasing the precision of constants
Chapter 3108
For information about increasing the precision of variables, see “Increasing default data sizes” on page 109.
The HP Fortran Programmer’s Reference describes the syntax of the kind parameter and the exponent form
and the +real_constant option. For detailed information about how floating-point arithmetic is
implemented on HP 9000 computers and how floating-point behavior affects the programmer, refer to the
HP-UX Floating-Point Guide.