### 8.128 `INT8` — Convert to 64-bit integer type

Description:
  Convert to a `KIND=8` integer type. This is equivalent to the standard `INT` intrinsic with an optional argument of `KIND=8`, and is only included for backwards compatibility.
Standard:
  GNU extension
Class:
  Elemental function
Syntax:
  `RESULT = INT8(A)`
Arguments:

  A | Shall be of type `INTEGER`, `REAL`, or `COMPLEX`.

Return value:
  The return value is a `INTEGER(8)` variable.
See also:
  INT, INT2, LONG