The GNU Fortran Compiler: IBCLR

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### 8.140 `IBCLR` — Clear bit

Description:

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

Standard:

  Fortran 90 and later, has overloads that are GNU extensions

Class:

  Elemental function

Syntax:

  `RESULT = IBCLR(I, POS)`

Arguments:

  I | The type shall be `INTEGER`.
  POS | The type shall be `INTEGER`.

Return value:

  The return value is of type `INTEGER` and of the same kind as I.

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

See also:

  IBITS, IBSET, IAND, IOR, IEOR, MVBITS