3.1.2 Real Data Types

Real data types can be specified as follows:

REAL REAL([KIND=]n)
REAL*n
DOUBLE PRECISION

n
Is kind 4, 8, or 16. Kind 16 is only available on OpenVMS, Tru64 UNIX, and Linux systems.

If a kind parameter is specified, the real constant has the kind specified. If a kind parameter is not specified, the kind is default real.

DOUBLE PRECISION is REAL(8). No kind parameter is permitted for data declared with type DOUBLE PRECISION.