From 121978987f4558ecd0ed99ec162b9a9af3d3f690 Mon Sep 17 00:00:00 2001
From: Will Tebbutt <wt0881@my.bristol.ac.uk>
Date: Thu, 11 Oct 2018 16:41:27 +0100
Subject: [PATCH] Add exp10 method for Dual (#102)

---
 src/core.jl | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/core.jl b/src/core.jl
index ca332e1b..fd013f77 100644
--- a/src/core.jl
+++ b/src/core.jl
@@ -250,3 +250,8 @@ function fmad_expr(f, x::Type{<:Tuple})
     return body
 end
 @generated fmad(f, x) = fmad_expr(f, x)
+
+function Base.exp10(x::Dual)
+    y = exp10(DualNumbers.value(x))
+    return Dual(y, y * log(10) * DualNumbers.epsilon(x))
+end