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

.. _iand:

IAND --- Bitwise logical and
****************************

.. index:: IAND

.. index:: BIAND

.. index:: IIAND

.. index:: JIAND

.. index:: KIAND

.. index:: bitwise logical and

.. index:: logical and, bitwise

.. function:: IAND

  Bitwise logical ``AND``.

  :param I:
    The type shall be ``INTEGER`` or a boz-literal-constant.

  :param J:
    The type shall be ``INTEGER`` with the same
    kind type parameter as :samp:`{I}` or a boz-literal-constant.
    :samp:`{I}` and :samp:`{J}` shall not both be boz-literal-constants.

  :return:
    The return type is ``INTEGER`` with the kind type parameter of the
    arguments.
    A boz-literal-constant is converted to an ``INTEGER`` with the kind
    type parameter of the other argument as-if a call to INT occurred.

  :samp:`{Standard}:`
    Fortran 90 and later, with boz-literal-constant Fortran 2008 and later, has overloads that are GNU extensions

  :samp:`{Class}:`
    Elemental function

  :samp:`{Syntax}:`

  .. code-block:: fortran

    RESULT = IAND(I, J)

  :samp:`{Example}:`

    .. code-block:: fortran

      PROGRAM test_iand
        INTEGER :: a, b
        DATA a / Z'F' /, b / Z'3' /
        WRITE (*,*) IAND(a, b)
      END PROGRAM

  :samp:`{Specific names}:`
    ============  ================  ==============  ====================
    Name          Argument          Return type     Standard
    ============  ================  ==============  ====================
    ``IAND(A)``   ``INTEGER A``     ``INTEGER``     Fortran 90 and later
    ``BIAND(A)``  ``INTEGER(1) A``  ``INTEGER(1)``  GNU extension
    ``IIAND(A)``  ``INTEGER(2) A``  ``INTEGER(2)``  GNU extension
    ``JIAND(A)``  ``INTEGER(4) A``  ``INTEGER(4)``  GNU extension
    ``KIAND(A)``  ``INTEGER(8) A``  ``INTEGER(8)``  GNU extension
    ============  ================  ==============  ====================

  :samp:`{See also}:`
    IOR, 
    IEOR, 
    IBITS, 
    IBSET, 
    IBCLR, 
    NOT