warp.volume\_lookup\_f
======================

.. function:: warp._src.lang.volume_lookup_f(id: uint64, i: int32, j: int32, k: int32) -> float

   .. hlist::
      :columns: 8

      * Kernel
      * Python

   Return the :class:`warp.float32` value of the voxel at integer index-space coordinates
   ``i``, ``j``, ``k``, without interpolation.
   
   ``id`` must identify a ``float32`` volume. This function is not differentiable. In kernels,
   ``volume_lookup_f()`` is equivalent to :func:`~warp.volume_lookup` with ``dtype=float``.
   
   See :func:`~warp.volume_lookup` for shared behavior and a usage example.
   
   :returns: The resolved :class:`warp.float32` voxel value.