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.