PDL::GSLSF::PSI3pm
Pdl interface to gsl special functions
Overview
This is an interface to the Special Function package present in the GNU Scientific Library.
Poly-Gamma Functions
psi(m,x) := (d/dx)^m psi(0,x) = (d/dx)^{m+1} log(gamma(x))Functions
gsl_sf_psi
Signature: (double x(); double [o]y(); double [o]e())Di-Gamma Function psi(x).
gsl_sf_psi does not process bad values. It will set the bad-value flag of all output ndarrays if the flag is set for any of the input ndarrays.
gsl_sf_psi_1piy
Signature: (double x(); double [o]y(); double [o]e())Di-Gamma Function Re[psi(1 + I y)]
gsl_sf_psi_1piy does not process bad values. It will set the bad-value flag of all output ndarrays if the flag is set for any of the input ndarrays.
gsl_sf_psi_n
Signature: (double x(); double [o]y(); double [o]e(); int n)Poly-Gamma Function psi^(n)(x)
gsl_sf_psi_n does not process bad values. It will set the bad-value flag of all output ndarrays if the flag is set for any of the input ndarrays.
Releases
10 releases since Debian 3.1 (Sarge); the text changed 9 times.