def pbdn_seq(n,z):
"""Compute sequence of parabolic cylinder functions Dn(z) and
their derivatives for D0(z)..Dn(z).
"""
if not (isscalar(n) and isscalar(z)):
raise ValueError("arguments must be scalars.")
if (floor(n)!=n):
raise ValueError("n must be an integer.")
if (abs(n) <= 1):
n1 = 1
else:
n1 = n
cpb,cpd = specfun.cpbdn(n1,z)
return cpb[:n1+1],cpd[:n1+1]
def pbdn_seq(n, z):
"""Compute sequence of parabolic cylinder functions Dn(z) and
their derivatives for D0(z)..Dn(z).
"""
if not (isscalar(n) and isscalar(z)):
raise ValueError, "arguments must be scalars."
if (floor(n) != n):
raise ValueError, "n must be an integer."
if (abs(n) <= 1):
n1 = 1
else:
n1 = n
cpb, cpd = specfun.cpbdn(n1, z)
return cpb[:n1 + 1], cpd[:n1 + 1]