From 682eee40cbc6fd24ea795ad91fb516888e57b66f Mon Sep 17 00:00:00 2001
From: qiaolongfei <qiaolongfei@baidu.com>
Date: Sun, 24 Dec 2017 20:01:09 +0800
Subject: [PATCH] fix math_function warning

---
 paddle/operators/math/math_function_impl.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/paddle/operators/math/math_function_impl.h b/paddle/operators/math/math_function_impl.h
index aced2690bc..ddd798dace 100644
--- a/paddle/operators/math/math_function_impl.h
+++ b/paddle/operators/math/math_function_impl.h
@@ -94,8 +94,8 @@ class ColwiseSum<platform::CPUDeviceContext, T> {
     T* out_buf = out->mutable_data<T>(out->place());
     const T* in_buf = input.data<T>();
 
-    for (size_t i = 0; i < height; ++i) {
-      for (size_t j = 0; j < size; ++j) {
+    for (size_t i = 0; i < static_cast<size_t>(height); ++i) {
+      for (size_t j = 0; j < static_cast<size_t>(size); ++j) {
         if (i == 0) {
           out_buf[j] = in_buf[i * size + j];
         } else {
-- 
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