def i0(x):
    # TODO(beam2d): Implement it
    raise NotImplementedError


def sinc(x):
    # TODO(beam2d): Implement it
    raise NotImplementedError

bc3c3f02fbaa49707b945beb7e1eb34a6116b5ee
<mask token>

def i0(x):
    raise NotImplementedError


<mask token>

def i0(x):
    raise NotImplementedError


def sinc(x):
    raise NotImplementedError

def i0(x):
    # TODO(beam2d): Implement it
    raise NotImplementedError


def sinc(x):
    # TODO(beam2d): Implement it
    raise NotImplementedError
