code: def elliprd(ctx, x, y, z):
      r"""
      Evaluates the degenerate Carlson symmetric elliptic integral
      of the third kind or Carlson elliptic integral of the
      second kind `R_D(x,y,z) = R_J(x,y,z,z)`.
  
      See :func:`~mpmath.elliprj` for additional information.
  
      **Examples**
  
          >>> from mpmath import *
          >>> mp.dps = 25; mp.pretty = True
          >>> elliprd(1,2,3)
          0.2904602810289906442326534
          >>> elliprj(1,2,3,3)
          0.2904602810289906442326534
  
      The so-called *second lemniscate constant*, a transcendental number::
  
          >>> elliprd(0,2,1)/3
          0.5990701173677961037199612
          >>> extradps(25)(quad)(lambda t: t**2/sqrt(1-t**4), [0,1])
          0.5990701173677961037199612
          >>> gamma('3/4')**2/sqrt(2*pi)
          0.5990701173677961037199612
  
      """
      return ctx.elliprj(x, y, z, z)
  
imports: from .functions import defun, defun_wrapped
label_desc: Use image node_id 16 for calling a global function with example usage: elliprd(ctx, x, y, z) and returns: ctx