LSHIFT (The GNU Fortran Compiler)

### 8.188 `LSHIFT` — Left shift bits ¶

Synopsis:

  `RESULT = LSHIFT(I, SHIFT)`

Description:

  `LSHIFT` returns a value corresponding to I with all of the bits shifted left by SHIFT places. SHIFT shall be nonnegative and less than or equal to `BIT_SIZE(I)`, otherwise the result value is undefined. Bits shifted out from the left end are lost; zeros are shifted in from the opposite end.

  This function has been superseded by the `ISHFT` intrinsic, which is standard in Fortran 95 and later, and the `SHIFTL` intrinsic, which is standard in Fortran 2008 and later.

Class:

  Elemental function

Arguments:

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

Return value:

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

Standard:

  GNU extension

See also:

  `ISHFT` — Shift bits,
  `ISHFTC` — Shift bits circularly,
  `RSHIFT` — Right shift bits,
  `SHIFTA` — Right shift with fill,
  `SHIFTL` — Left shift,
  `SHIFTR` — Right shift