def frexp10(x):
expon = _np.int(_np.floor(_np.log10(_np.abs(x))))<EOL>mant = x/_np.power(<NUM_LIT:10>, expon)<EOL>return (mant, expon)<EOL>
Finds the mantissa and exponent of a number :math:`x` such that :math:`x = m 10^e`.

Parameters
----------

x : float
    Number :math:`x` such that :math:`x = m 10^e`.

Returns
-------

mantissa : float
    Number :math:`m` such that :math:`x = m 10^e`.
exponent : float
    Number :math:`e` such that :math:`x = m 10^e`.