DIGITS(X)

Purpose

Returns the number of significant digits for numbers whose type and kind type parameter are the same as the argument.

Class

Inquiry function

Argument type and attributes

X

An INTENT(IN) INTEGER or REAL. The actual argument corresponding to X can be scalar or array valued.

Result type and attributes

Default integer scalar.

Result value

• If X is of type integer, the number of the significant digits of X is:

      type                    bits
  -----------                ------
   integer(1)                    7
   integer(2)                   15
   integer(4)                   31
   integer(8)                   63

• If X is of type real, the number of significant bits of X is:

     type                    bits
  ----------                ------
  real(4)                      24
  real(8)                      53
  real(16)                    106