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Message-ID: <20091022022013.87460282EF4F@mail.pubhealth.ku.dk>
Date: 2009-10-22T02:20:13Z
From: Jerry.Lewis at BiogenIdec.com
Subject: trigamma for very large arguments (PR#14020)

Full_Name: Jerry W. Lewis
Version: 2.9.2
OS: Windows XP Professional
Submission from: (NULL) (96.237.55.233)


trigamma(x) returns 0 for x>1e152, yet
  trigamma <- function(x) 1/x
gives machine accuracy for any x>1e16