def lqn(n,z):
"""Compute sequence of Legendre functions of the second kind,
Qn(z) and derivatives for all degrees from 0 to n (inclusive).
"""
if not (isscalar(n) and isscalar(z)):
raise ValueError("arguments must be scalars.")
if (n!= floor(n)) or (n<0):
raise ValueError("n must be a non-negative integer.")
if (n < 1): n1 = 1
else: n1 = n
if iscomplex(z):
qn,qd = specfun.clqn(n1,z)
else:
qn,qd = specfun.lqnb(n1,z)
return qn[:(n+1)],qd[:(n+1)]
def lqn(n, z):
"""Compute sequence of Legendre functions of the second kind,
Qn(z) and derivatives for all degrees from 0 to n (inclusive).
"""
if not (isscalar(n) and isscalar(z)):
raise ValueError, "arguments must be scalars."
if (n != floor(n)) or (n < 0):
raise ValueError, "n must be a non-negative integer."
if (n < 1): n1 = 1
else: n1 = n
if iscomplex(z):
qn, qd = specfun.clqn(n1, z)
else:
qn, qd = specfun.lqnb(n1, z)
return qn[:(n + 1)], qd[:(n + 1)]