..
  Copyright 1988-2021 Free Software Foundation, Inc.
  This is part of the GCC manual.
  For copying conditions, see the GPL license file

.. _iall:

IALL --- Bitwise AND of array elements
**************************************

.. index:: IALL

.. index:: array, AND

.. index:: bits, AND of array elements

.. function:: IALL

  Reduces with bitwise AND the elements of :samp:`{ARRAY}` along dimension :samp:`{DIM}`
  if the corresponding element in :samp:`{MASK}` is ``TRUE``.

  :param ARRAY:
    Shall be an array of type ``INTEGER``

  :param DIM:
    (Optional) shall be a scalar of type 
    ``INTEGER`` with a value in the range from 1 to n, where n 
    equals the rank of :samp:`{ARRAY}`.

  :param MASK:
    (Optional) shall be of type ``LOGICAL`` 
    and either be a scalar or an array of the same shape as :samp:`{ARRAY}`.

  :return:
    The result is of the same type as :samp:`{ARRAY}`.

  :samp:`{Standard}:`
    Fortran 2008 and later

  :samp:`{Class}:`
    Transformational function

  :samp:`{Syntax}:`

  .. code-block:: fortran

    RESULT = IALL(ARRAY[, MASK])
    RESULT = IALL(ARRAY, DIM[, MASK])

  :samp:`{Example}:`

    .. code-block:: fortran

      PROGRAM test_iall
        INTEGER(1) :: a(2)

        a(1) = b'00100100'
        a(2) = b'01101010'

        ! prints 00100000
        PRINT '(b8.8)', IALL(a)
      END PROGRAM

  :samp:`{See also}:`
    IANY, 
    IPARITY, 
    IAND