miksu

from cython cimport floating

cdef floating digamma(floating x) nogil:
    """
    Copyright (c) 1995-2004 by Radford M. Neal

    Permission is granted for anyone to copy, use, modify, or distribute this
    program and accompanying programs and documents for any purpose, provided
    this copyright notice is retained and prominently displayed, along with
    a note saying that the original programs are available from Radford Neal's