Merge pull request #1362 from xiebaiyuan/develop

suit raspberry compile on gcc fixed #1361

src/operators/kernel/arm/conv_add_bn_relu_kernel.cpp

@@ -15,6 +15,7 @@ limitations under the License. */
 #ifdef FUSION_CONVADDBNRELU_OP
 
 #include "operators/kernel/conv_add_bn_relu_kernel.h"
+#include <math.h>
 #include "operators/kernel/central-arm-func/conv_add_bn_relu_arm_func.h"
 
 namespace paddle_mobile {