From 629083801df8bb75bbf3bf17e40027160b61a478 Mon Sep 17 00:00:00 2001
From: Yang Bo <atryyang@thoughtworks.com>
Date: Wed, 7 Feb 2018 17:01:45 +0800
Subject: [PATCH] Indicies should be signed

---
 .../scala/com/thoughtworks/compute/OpenCLKernelBuilder.scala    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/OpenCLKernelBuilder/src/main/scala/com/thoughtworks/compute/OpenCLKernelBuilder.scala b/OpenCLKernelBuilder/src/main/scala/com/thoughtworks/compute/OpenCLKernelBuilder.scala
index b3d01a71..0196e7fc 100644
--- a/OpenCLKernelBuilder/src/main/scala/com/thoughtworks/compute/OpenCLKernelBuilder.scala
+++ b/OpenCLKernelBuilder/src/main/scala/com/thoughtworks/compute/OpenCLKernelBuilder.scala
@@ -212,7 +212,7 @@ trait OpenCLKernelBuilder extends FloatArrays {
           }
         }
         val indexId = freshName("index")
-        indexId -> fast"size_t $indexId = ${products.mkFastring(" + ")};\n"
+        indexId -> fast"ptrdiff_t $indexId = ${products.mkFastring(" + ")};\n"
       }).unzip
 
 //      fast"