From a04731c2447a2268fd4fc9c831375157aef2e09e Mon Sep 17 00:00:00 2001 From: Jeffrey Regier Date: Sat, 28 Feb 2015 12:04:50 -0800 Subject: [PATCH] specified the derivative of the digamma function --- src/differentiate.jl | 1 + 1 file changed, 1 insertion(+) diff --git a/src/differentiate.jl b/src/differentiate.jl index c1ad229..32950fd 100644 --- a/src/differentiate.jl +++ b/src/differentiate.jl @@ -166,6 +166,7 @@ symbolic_derivative_1arg_list = [ ( :erfi, :( 2 * exp(square(x)) / sqrt(pi) )) ( :gamma, :( digamma(x) * gamma(x) )) ( :lgamma, :( digamma(x) )) + ( :digamma, :( polygamma(1, x) )) ( :airy, :( airyprime(x) )) # note: only covers the 1-arg version ( :airyprime, :( airy(2, x) )) ( :airyai, :( airyaiprime(x) ))