9.78. DIGITS

9.78 DIGITS — Significant binary digits function

Description:
DIGITS(X) returns the number of significant binary digits of the internal model representation of X. For example, on a system using a 32-bit floating point representation, a default real number would likely return 24.
Standard:
Fortran 95 and later
Class:
Inquiry function
Syntax:
RESULT = DIGITS(X)
Arguments:
X The type may be INTEGER or REAL.
Return value:
The return value is of type INTEGER.
Example:
program test_digits
    integer :: i = 12345
    real :: x = 3.143
    real(8) :: y = 2.33
    print *, digits(i)
    print *, digits(x)
    print *,