def testfrexp(name, (mant, exp), (emant, eexp)):
    if abs(emant-mant) > eps or exp != eexp:
        raise TestFailed, '%s returned %r, expected %r'%\
              (name, (mant, exp), (emant,eexp))
dataset/ETHPy150Open babble/babble/include/jython/Lib/test/test_math.py/testfrexp/swapped operands of `-`