docs: 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