From 3462e61c162becfb38f46e684a70badc21eae604 Mon Sep 17 00:00:00 2001
From: Tom Deakin <tom.deakin@bristol.ac.uk>
Date: Tue, 3 May 2016 11:05:21 +0100
Subject: [PATCH] Check device support float

---
 src/OCLStream.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/OCLStream.cpp b/src/OCLStream.cpp
index 422b409..ed419b5 100644
--- a/src/OCLStream.cpp
+++ b/src/OCLStream.cpp
@@ -70,7 +70,12 @@ OCLStream<T>::OCLStream(const unsigned int ARRAY_SIZE, const int device_index)
   // Create program
   cl::Program program(context, kernels);
   if (sizeof(T) == sizeof(double))
+  {
+    // Check device can do double
+    if (!device.getInfo<CL_DEVICE_DOUBLE_FP_CONFIG>())
+      throw std::runtime_error("Device does not support double precision, please use --float");
     program.build("-DTYPE=double");
+  }
   else if (sizeof(T) == sizeof(float))
     program.build("-DTYPE=float");