IBCLR

 IBCLR (integer, position)

 Class:  Elemental function - Generic

 Returns the value of the first argument with the specified bit set
 to 0 (bit clear).  The low-order bit is position 0.

 +------+---------+----------+------------+-------------+        
 | Args | Generic | Specific |  Argument  | Result Type |
 +------+---------+----------+------------+-------------+
 |  2   |  IBCLR  |   --     | INTEGER*1  | INTEGER*1   |
 |      |         | IIBCLR   | INTEGER*2  | INTEGER*4   |
 |      |         | JIBCLR   | INTEGER*4  | INTEGER*4   |
 |      |         | KIBCLR   | INTEGER*8  | INTEGER*8   |
 +------+---------+----------+------------+-------------+