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### 8.45 `CEILING` — Integer ceiling function

Description:
  `CEILING(A)` returns the least integer greater than or equal to A.
Standard:
  Fortran 95 and later
Class:
  Elemental function
Syntax:
  `RESULT = CEILING(A [, KIND])`
Arguments:

  A | The type shall be `REAL`.
  KIND | (Optional) An `INTEGER` initialization expression indicating the kind parameter of the result.

Return value:
  The return value is of type `INTEGER(KIND)` if KIND is present and a default-kind `INTEGER` otherwise.
Example:

                program test_ceiling
                    real :: x = 63.29
                    real :: y = -63.59
                    print *, ceiling(x) ! returns 64
                    print *, ceiling(y) ! returns -63
                end program test_ceiling

See also:
  FLOOR, NINT