Implement floor operator

PiperOrigin-RevId: 194490433

1 files changed, 58 insertions, 0 deletions

diff --git a/tensorflow/contrib/lite/kernels/floor.cc b/tensorflow/contrib/lite/kernels/floor.cc
new file mode 100644
index 0000000000..4b4395f711
--- /dev/null
+++ b/tensorflow/contrib/lite/kernels/floor.cc
@@ -0,0 +1,58 @@
+/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#include "tensorflow/contrib/lite/context.h"
+#include "tensorflow/contrib/lite/kernels/internal/optimized/optimized_ops.h"
+#include "tensorflow/contrib/lite/kernels/internal/tensor.h"
+#include "tensorflow/contrib/lite/kernels/kernel_util.h"
+
+namespace tflite {
+namespace ops {
+namespace builtin {
+namespace floor {
+
+constexpr int kInputTensor = 0;
+constexpr int kOutputTensor = 0;
+
+TfLiteStatus Prepare(TfLiteContext* context, TfLiteNode* node) {
+  TfLiteTensor* input = GetInput(context, node, kInputTensor);
+  TfLiteTensor* output = GetOutput(context, node, kOutputTensor);
+  TF_LITE_ENSURE_EQ(context, NumInputs(node), 1);
+  TF_LITE_ENSURE_EQ(context, NumOutputs(node), 1);
+  TF_LITE_ENSURE_EQ(context, input->type, kTfLiteFloat32);
+  output->type = input->type;
+  TfLiteIntArray* output_size = TfLiteIntArrayCopy(input->dims);
+  return context->ResizeTensor(context, output, output_size);
+}
+
+TfLiteStatus Eval(TfLiteContext* context, TfLiteNode* node) {
+  TfLiteTensor* input = GetInput(context, node, kInputTensor);
+  TfLiteTensor* output = GetOutput(context, node, kOutputTensor);
+
+  optimized_ops::Floor(GetTensorData<float>(input), GetTensorDims(input),
+                       GetTensorData<float>(output), GetTensorDims(output));
+  return kTfLiteOk;
+}
+}  // namespace floor
+
+TfLiteRegistration* Register_FLOOR() {
+  static TfLiteRegistration r = {/*init=*/nullptr,
+                                 /*free=*/nullptr, floor::Prepare, floor::Eval};
+  return &r;
+}
+
+}  // namespace builtin
+}  // namespace ops
+}  // namespace tflite