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

.. _ibclr:

IBCLR --- Clear bit
*******************

.. index:: IBCLR

.. index:: BBCLR

.. index:: IIBCLR

.. index:: JIBCLR

.. index:: KIBCLR

.. index:: bits, unset

.. index:: bits, clear

.. function:: IBCLR

  ``IBCLR`` returns the value of :samp:`{I}` with the bit at position
  :samp:`{POS}` set to zero.

  :param I:
    The type shall be ``INTEGER``.

  :param POS:
    The type shall be ``INTEGER``.

  :return:
    The return value is of type ``INTEGER`` and of the same kind as
    :samp:`{I}`.

  :samp:`{Standard}:`
    Fortran 90 and later, has overloads that are GNU extensions

  :samp:`{Class}:`
    Elemental function

  :samp:`{Syntax}:`

  .. code-block:: fortran

    RESULT = IBCLR(I, POS)

  :samp:`{Specific names}:`
    =============  ================  ==============  ====================
    Name           Argument          Return type     Standard
    =============  ================  ==============  ====================
    ``IBCLR(A)``   ``INTEGER A``     ``INTEGER``     Fortran 90 and later
    ``BBCLR(A)``   ``INTEGER(1) A``  ``INTEGER(1)``  GNU extension
    ``IIBCLR(A)``  ``INTEGER(2) A``  ``INTEGER(2)``  GNU extension
    ``JIBCLR(A)``  ``INTEGER(4) A``  ``INTEGER(4)``  GNU extension
    ``KIBCLR(A)``  ``INTEGER(8) A``  ``INTEGER(8)``  GNU extension
    =============  ================  ==============  ====================

  :samp:`{See also}:`
    IBITS, 
    IBSET, 
    IAND, 
    IOR, 
    IEOR, 
    MVBITS