Module rgsl::psi::diagamma

Functions

psi	This routine computes the digamma function \psi(x) for general x, x \ne 0.
psi_1piy	This routine computes the real part of the digamma function on the line 1+i y, \Re[\psi(1 + i y)].
psi_1piy_e	This routine computes the real part of the digamma function on the line 1+i y, \Re[\psi(1 + i y)].
psi_e	This routine computes the digamma function \psi(x) for general x, x \ne 0.
psi_int	This routine computes the digamma function \psi(n) for positive integer n. The digamma function is also called the Psi function.
psi_int_e	This routine computes the digamma function \psi(n) for positive integer n. The digamma function is also called the Psi function.