Merge pull request tensorflow#18846 from yongtang/04252018-FloorDiv-int8

Enable int8 support for FloorDiv

Author: ekelsen

tensorflow/core/kernels/cwise_op_floor_div.cc

@@ -16,8 +16,8 @@ limitations under the License.
 #include "tensorflow/core/kernels/cwise_ops_common.h"
 
 namespace tensorflow {
-REGISTER5(BinaryOp, CPU, "FloorDiv", functor::safe_floor_div, uint8, uint16,
-          int16, int32, int64);
+REGISTER6(BinaryOp, CPU, "FloorDiv", functor::safe_floor_div, uint8, uint16,
+          int8, int16, int32, int64);
 REGISTER3(BinaryOp, CPU, "FloorDiv", functor::floor_div_real, float,
           Eigen::half, double);
 

tensorflow/python/kernel_tests/division_past_test.py

@@ -35,8 +35,7 @@ def testDivision(self):
     """Test all the different ways to divide."""
     values = [1, 2, 7, 11]
     functions = (lambda x: x), constant_op.constant
-    # TODO(irving): Test int8, int16 once we support casts for those.
-    dtypes = np.int32, np.int64, np.float32, np.float64
+    dtypes = np.int8, np.int16, np.int32, np.int64, np.float32, np.float64
 
     tensors = []
     checks = []