def __ne__(self, other):
return not self.__eq__(other)<EOL>
Test waveform inequality.

Two waveforms are considered unequal if their independent variable
vectors are different with :py:data:`peng.FP_ATOL` absolute tolerance
and :py:data:`peng.FP_RTOL` relative tolerance, and/or their dependent
variable vectors are different with :py:data:`peng.FP_ATOL` absolute
tolerance and :py:data:`peng.FP_RTOL` relative tolerance, and/or their
independent variable scales are not the same, and/or their dependent
variable scales are not the, and/or their independent variable units
are not the same, and/or their dependent variable units are not the
same and/or they do not have the same interpolation function.

A waveform is considered unequal to a real number when its dependent
variable is not equal to that number at least in one element.