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

Controlling data storage
Increasing default data sizes
Chapter 3110
Figure 3-1 Increasing default data sizes
The following program illustrates the different effects of the +autodbl and +autodbl4 options. The
program assigns the same quad-precision constant to three variables:
• x, a default (that is, single-precision) real
• y, a real that is declared as double-precision with the kind parameter
• z, a double-precision real that is declared with the DOUBLE PRECISION statement
The following program includes PRINT statements to show the stored values.
048 16
Bytes
INTEGER:
LOGICAL:
REAL:
DOUBLE
COMPLEX:
PRECISION:
Key
= +noautodbl and +noautodbl4 (the default)
= +autodbl
= +autodbl4