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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def val_to_bv(self, size, signed=True, rm=None):
 """ Convert this floating point value to an integer. :param size: The size of the bitvector to return :param signed: Optional: Whether the target integer is signed :param rm: Optional: The rounding mode to use :return: A bitvector whose value is the rounded version of this FP's value """

        if rm is None:
            rm = fp.RM.default()

        op = fpToSBV if signed else fpToUBV
        return op(rm, self, size)