diff --git a/paddle/gserver/activations/ActivationFunction.cpp b/paddle/gserver/activations/ActivationFunction.cpp
index bc3dd9ad5d86236697819d6ed389f197ce963fb0..220f220e0f2919ab69a164e6bf6265c3cbaa5494 100644
--- a/paddle/gserver/activations/ActivationFunction.cpp
+++ b/paddle/gserver/activations/ActivationFunction.cpp
@@ -345,7 +345,7 @@ void forward(Argument& act) {
                          useGpu(act.deviceId));
 
   act.in->copyFrom(*act.value);
-  act.value->log(*act.value);
+  act.value->log2(*act.value);
 }
 
 void backward(Argument& act) { act.grad->dotDiv(*act.grad, *act.in); }
diff --git a/paddle/math/tests/test_BaseMatrix.cpp b/paddle/math/tests/test_BaseMatrix.cpp
index 521ea8aeb09744a59e64d493062ce42748ee716b..f8c795a63918c5d52c8b92fad2d487c6e9f6df05 100644
--- a/paddle/math/tests/test_BaseMatrix.cpp
+++ b/paddle/math/tests/test_BaseMatrix.cpp
@@ -37,13 +37,13 @@ TEST(BaseMatrix, void) {
       };
 
       compare(&BaseMatrix::neg);
-      compare(&BaseMatrix::exp);
-      compare(&BaseMatrix::log);
-      compare(&BaseMatrix::sqrt);
-      compare(&BaseMatrix::square);
-      compare(&BaseMatrix::reciprocal);
-      compare(&BaseMatrix::abs);
-      compare(&BaseMatrix::sign);
+      compare(&BaseMatrix::exp2);
+      compare(&BaseMatrix::log2);
+      compare(&BaseMatrix::sqrt2);
+      compare(&BaseMatrix::square2);
+      compare(&BaseMatrix::reciprocal2);
+      compare(&BaseMatrix::abs2);
+      compare(&BaseMatrix::sign2);
       compare(&BaseMatrix::zero);
       compare(&BaseMatrix::one);
     }
@@ -59,7 +59,7 @@ TEST(BaseMatrix, real) {
         test.cmpWithoutArg<0>(f, height, width);
       };
 
-      compare(&BaseMatrix::pow);
+      compare(&BaseMatrix::pow2);
       compare(&BaseMatrix::subScalar);
       compare(&BaseMatrix::mulScalar);
       compare(&BaseMatrix::divScalar);
@@ -88,21 +88,21 @@ TEST(BaseMatrix, BaseMatrix) {
       compare(&BaseMatrix::softreluDerivative);
       compare(&BaseMatrix::brelu);
       compare(&BaseMatrix::breluDerivative);
-      compare(&BaseMatrix::square);
+      compare(&BaseMatrix::square2);
       compare(&BaseMatrix::squareDerivative);
       compare(&BaseMatrix::tanh);
       compare(&BaseMatrix::tanhDerivative);
-      compare(&BaseMatrix::reciprocal);
+      compare(&BaseMatrix::reciprocal2);
       compare(&BaseMatrix::reciprocalDerivative);
-      compare(&BaseMatrix::abs);
+      compare(&BaseMatrix::abs2);
       compare(&BaseMatrix::absDerivative);
       compare(&BaseMatrix::sigmoid);
       compare(&BaseMatrix::sigmoidDerivative);
       compare(&BaseMatrix::expDerivative);
-      compare(&BaseMatrix::sign);
-      compare(&BaseMatrix::exp);
-      compare(&BaseMatrix::log);
-      compare(&BaseMatrix::sqrt);
+      compare(&BaseMatrix::sign2);
+      compare(&BaseMatrix::exp2);
+      compare(&BaseMatrix::log2);
+      compare(&BaseMatrix::sqrt2);
       compare(&BaseMatrix::dotMul);
       compare(&BaseMatrix::dotMulSquare);
       compare(&BaseMatrix::dotSquareMul);
@@ -143,7 +143,7 @@ TEST(BaseMatrix, BaseMatrix_real) {
       compare(&BaseMatrix::addBias);
       compare(&BaseMatrix::add);
       compare(&BaseMatrix::sub);
-      compare(&BaseMatrix::pow);
+      compare(&BaseMatrix::pow2);
       compare(&BaseMatrix::addScalar);
       compare(&BaseMatrix::subScalar);
       compare(&BaseMatrix::mulScalar);
@@ -176,7 +176,7 @@ TEST(BaseMatrix, BaseMatrix_BaseMatrix) {
       compare(&BaseMatrix::logisticRegressionLoss);
       compare(&BaseMatrix::logisticRegressionLossBp);
       compare(&BaseMatrix::biggerThan);
-      compare(&BaseMatrix::max);
+      compare(&BaseMatrix::max2);
       compare(&BaseMatrix::dotMulSquare);
       compare(&BaseMatrix::dotSquareSquare);
     }
diff --git a/paddle/math/tests/test_Tensor.cu b/paddle/math/tests/test_Tensor.cu
index bd406da84515790f694168e8db7819cc5966654a..343e0631f60238780ce5bda21b108cfcb7e2a56e 100644
--- a/paddle/math/tests/test_Tensor.cu
+++ b/paddle/math/tests/test_Tensor.cu
@@ -18,6 +18,8 @@ limitations under the License. */
 
 using namespace paddle;  // NOLINT
 using namespace std;     // NOLINT
+using autotest::TensorCheckEqual;
+using autotest::TensorCheckErr;
 
 #define INIT_UNARY(A1, A2)                  \
     Tensor A1(height, width);               \
diff --git a/paddle/math/tests/test_lazyAssign.cu b/paddle/math/tests/test_lazyAssign.cu
index 275510e55bab934cdf3b430fe626c0a0c74f2110..b4ed8e4d632c48c525e3020e42fce78ddd986a64 100644
--- a/paddle/math/tests/test_lazyAssign.cu
+++ b/paddle/math/tests/test_lazyAssign.cu
@@ -19,6 +19,8 @@ limitations under the License. */
 
 using namespace paddle;  // NOLINT
 using namespace std;     // NOLINT
+using autotest::TensorCheckEqual;
+using autotest::TensorCheckErr;
 
 typedef std::function<void(int height, int width)> testMatrixFunc;
 void testMatrixCase(testMatrixFunc matrixFunc) {