From fdc3b1161396dc1004f374ecc5e07241cbe18546 Mon Sep 17 00:00:00 2001
From: Matthias Vogelgesang <matthias.vogelgesang@kit.edu>
Date: Mon, 15 Jan 2018 10:16:48 +0100
Subject: opencl: add `diff` kernel

---
 docs/kernels.rst | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'docs')

diff --git a/docs/kernels.rst b/docs/kernels.rst
index cd0020c..ce485c9 100644
--- a/docs/kernels.rst
+++ b/docs/kernels.rst
@@ -18,9 +18,12 @@ This section lists all kernel functions that are available to the
 
     Smooths data within a local neighbourhood.
 
+.. c:function:: void diff ()
+
+    Computes :math:`f(x, y) = x - y`.
 
-.. _opencl-reduction-default-kernels:
 
+.. _opencl-reduction-default-kernels:
 
 OpenCL reduction default kernels
 ================================
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