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/GNU Fortran 7

9.83 DBLE — Double conversion function

Description:

DBLE(A) Converts A to double precision real type.

Standard:

Fortran 77 and later

Class:

Elemental function

Syntax:

RESULT = DBLE(A)

Arguments:
A The type shall be INTEGER, REAL, or COMPLEX.
Return value:

The return value is of type double precision real.

Example:
program test_dble
    real    :: x = 2.18
    integer :: i = 5
    complex :: z = (2.3,1.14)
    print *, dble(x), dble(i), dble(z)
end program test_dble
See also:

REAL

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Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gfortran/DBLE.html