def __init__(
self,
operator_string: str = "<",
duration=None,
*,
preprolated: bool = None,
) -> None:
Inequality.__init__(self, operator_string=operator_string)
if duration is None:
duration = Infinity()
infinities = (Infinity(), NegativeInfinity())
if duration not in infinities:
duration = Duration(duration)
assert 0 <= duration
self._duration = duration
self._preprolated = preprolated
def dynamic_ordinal_to_dynamic_name(dynamic_ordinal) -> str:
"""
Changes ``dynamic_ordinal`` to dynamic name.
.. container:: example
>>> abjad.Dynamic.dynamic_ordinal_to_dynamic_name(-5)
'pppp'
>>> negative_infinity = abjad.mathtools.NegativeInfinity()
>>> abjad.Dynamic.dynamic_ordinal_to_dynamic_name(negative_infinity)
'niente'
"""
if dynamic_ordinal == NegativeInfinity():
return "niente"
else:
return Dynamic._dynamic_ordinal_to_dynamic_name[dynamic_ordinal]