From dacb23277e75bc1c3465f41b6f3ba42359e41038 Mon Sep 17 00:00:00 2001
From: Benoit Steiner <benoit.steiner.goog@gmail.com>
Date: Thu, 28 Apr 2016 18:54:54 -0700
Subject: [PATCH] Fixed the igamma and igammac implementations to make them
 callable from a gpu kernel.

---
 Eigen/src/Core/SpecialFunctions.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Eigen/src/Core/SpecialFunctions.h b/Eigen/src/Core/SpecialFunctions.h
index 1ec0fb325..3513a5c63 100644
--- a/Eigen/src/Core/SpecialFunctions.h
+++ b/Eigen/src/Core/SpecialFunctions.h
@@ -549,7 +549,7 @@ struct igammac_impl {
    *   x >= 1
    *   x >= a
    */
-  static Scalar Impl(Scalar a, Scalar x) {
+  EIGEN_DEVICE_FUNC static Scalar Impl(Scalar a, Scalar x) {
     const Scalar zero = 0;
     const Scalar one = 1;
     const Scalar two = 2;
@@ -736,7 +736,7 @@ struct igamma_impl {
    *   a > 0
    *   !(x > 1 && x > a)
    */
-  static Scalar Impl(Scalar a, Scalar x) {
+  EIGEN_DEVICE_FUNC static Scalar Impl(Scalar a, Scalar x) {
     const Scalar zero = 0;
     const Scalar one = 1;
     const Scalar machep = igamma_helper<Scalar>::machep();