is_nonnegative_integer_equivalent_number

mathtools.is_nonnegative_integer_equivalent_number(argument)

Is true when argument is a nonnegative integer-equivalent number. Otherwise false.

>>> import abjad
>>> duration = abjad.Duration(4, 2)
>>> abjad.mathtools.is_nonnegative_integer_equivalent_number(duration)
True

Returns true or false.