Set the hybrid/renormalization control parameters.

        **Call signature**

        *s_C*
          The harmonic number above which the continuous approximation
          is used (with special behavior; see below).
        *s_WH*
          The harmonic number above which the Wild-Hill BEssel function
          approximations are used.
        *do_renorm* (default True)
          Whether to do any renormalization at all.
        Returns
          *self* for convenience in chaining.

        FK10 uses frequency parameters f^C_cr and f^WH_cr to control some of
        its optimizations. This function sets these parameters as multiples of
        the electron cyclotron frequency (f_Be in FK10 notation): e.g.,
        ``f^C_cr = s_C * f_Be``.

        At frequencies above f^C_cr, the "continuum" approximation is
        introduced, replacing the "exact" sum with an integral. At frequencies
        above f^WH_cr, the Wild-Hild approximations to the Bessel functions
        are used. In both cases, the activation of the optimizations can
        result in normalization shifts in the calculations. "Renormalization"
        computes these shifts (by doing both kinds of calculations at the
        transition frequencies) and attempts to correct them. (Some of the
        FK10 documentation seems to refer to renormalization as
        "R-optimization".)

        If f^C_cr is below the lowest frequency integrated, all calculations
        will be done in continuum mode. In this case, the sign of *s_C* sets
        whether Wild-Hill renormalization is applied. If *s_C* is negative and
        f^WH_cr is above the lowest frequency integration, renormalization is
        done. Otherwise, it is not.

        The documentation regarding f^WH_cr is confusing. It states that
        f^WH_cr only matters if (1) s_WH < s_C or (2) s_C < 0 and f^WH_cr >
        f_0. It is not obvious to me why s_WH > s_C should only matter if s_C
        < 0, but that's what's implied.

        In most examples in FK10, both of these parameters are set to 12.

def set_hybrid_parameters(self, s_C, s_WH, do_renorm=True):
        """Set the hybrid/renormalization control parameters.

        **Call signature**

        *s_C*
          The harmonic number above which the continuous approximation
          is used (with special behavior; see below).
        *s_WH*
          The harmonic number above which the Wild-Hill BEssel function
          approximations are used.
        *do_renorm* (default True)
          Whether to do any renormalization at all.
        Returns
          *self* for convenience in chaining.

        FK10 uses frequency parameters f^C_cr and f^WH_cr to control some of
        its optimizations. This function sets these parameters as multiples of
        the electron cyclotron frequency (f_Be in FK10 notation): e.g.,
        ``f^C_cr = s_C * f_Be``.

        At frequencies above f^C_cr, the "continuum" approximation is
        introduced, replacing the "exact" sum with an integral. At frequencies
        above f^WH_cr, the Wild-Hild approximations to the Bessel functions
        are used. In both cases, the activation of the optimizations can
        result in normalization shifts in the calculations. "Renormalization"
        computes these shifts (by doing both kinds of calculations at the
        transition frequencies) and attempts to correct them. (Some of the
        FK10 documentation seems to refer to renormalization as
        "R-optimization".)

        If f^C_cr is below the lowest frequency integrated, all calculations
        will be done in continuum mode. In this case, the sign of *s_C* sets
        whether Wild-Hill renormalization is applied. If *s_C* is negative and
        f^WH_cr is above the lowest frequency integration, renormalization is
        done. Otherwise, it is not.

        The documentation regarding f^WH_cr is confusing. It states that
        f^WH_cr only matters if (1) s_WH < s_C or (2) s_C < 0 and f^WH_cr >
        f_0. It is not obvious to me why s_WH > s_C should only matter if s_C
        < 0, but that's what's implied.

        In most examples in FK10, both of these parameters are set to 12.

        """
        self.in_vals[IN_VAL_FCCR] = s_C
        self.in_vals[IN_VAL_FWHCR] = s_WH
        self.in_vals[IN_VAL_RENORMFLAG] = 1 if do_renorm else 0
        return self