The GNU Fortran Compiler: INT

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### 9.141 `INT` — Convert to integer type

Description:

  Convert to integer type

Standard:

  Fortran 77 and later

Class:

  Elemental function

Syntax:

  `RESULT = INT(A [, KIND))`

Arguments:

  A | Shall be of type `INTEGER`, `REAL`, or `COMPLEX`.
  KIND | (Optional) An `INTEGER` initialization expression indicating the kind parameter of the result.

Return value:

  These functions return a `INTEGER` variable or array under the following rules:

  (A)

    If A is of type `INTEGER`, `INT(A) = A`

  (B)

    If A is of type `REAL` and |A| < 1, `INT(A)` equals `0`. If |A| \geq 1, then `INT(A)` is the integer whose magnitude is the largest integer that does not exceed the magnitude of A and whose sign is the same as the sign of A.

  (C)

    If A is of type `COMPLEX`, rule B is applied to the real part of A.

Example:

      program test_int
        integer :: i = 42
        complex :: z = (-3.7, 1.0)
        print *, int(i)
        print *, int(z), int(z,8)
      end program

Specific names:

  Name | Argument | Return type | Standard
  `INT(A)` | `REAL(4) A` | `INTEGER` | Fortran 77 and later
  `IFIX(A)` | `REAL(4) A` | `INTEGER` | Fortran 77 and later
  `IDINT(A)` | `REAL(8) A` | `INTEGER` | Fortran 77 and later