Add ceil op for micro

PiperOrigin-RevId: 262866402

tensorflow/lite/experimental/micro/kernels/BUILD

@@ -15,6 +15,7 @@ cc_library(
     name = "micro_ops",
     srcs = [
         "arg_min_max.cc",
+        "ceil.cc",
         "comparisons.cc",
         "conv.cc",
         "depthwise_conv.cc",
@@ -63,6 +64,7 @@ cc_library(
     name = "portable_optimized_micro_ops",
     srcs = [
         "arg_min_max.cc",
+        "ceil.cc",
         "comparisons.cc",
         "conv.cc",
         "elementwise.cc",
@@ -276,6 +278,19 @@ tflite_micro_cc_test(
     ],
 )
 
+tflite_micro_cc_test(
+    name = "ceil_test",
+    srcs = [
+        "ceil_test.cc",
+    ],
+    deps = [
+        ":all_ops_resolver",
+        "//tensorflow/lite/c:c_api_internal",
+        "//tensorflow/lite/experimental/micro:micro_framework",
+        "//tensorflow/lite/experimental/micro/testing:micro_test",
+    ],
+)
+
 cc_library(
     name = "micro_utils",
     hdrs = ["micro_utils.h"],

tensorflow/lite/experimental/micro/kernels/all_ops_resolver.cc

@@ -45,6 +45,7 @@ TfLiteRegistration* Register_GREATER();
 TfLiteRegistration* Register_GREATER_EQUAL();
 TfLiteRegistration* Register_LESS();
 TfLiteRegistration* Register_LESS_EQUAL();
+TfLiteRegistration* Register_CEIL();
 
 AllOpsResolver::AllOpsResolver() {
   AddBuiltin(BuiltinOperator_DEPTHWISE_CONV_2D, Register_DEPTHWISE_CONV_2D());
@@ -78,6 +79,7 @@ AllOpsResolver::AllOpsResolver() {
   AddBuiltin(BuiltinOperator_GREATER_EQUAL, Register_GREATER_EQUAL());
   AddBuiltin(BuiltinOperator_LESS, Register_LESS());
   AddBuiltin(BuiltinOperator_LESS_EQUAL, Register_LESS_EQUAL());
+  AddBuiltin(BuiltinOperator_CEIL, Register_CEIL());
 }
 
 }  // namespace micro

tensorflow/lite/experimental/micro/kernels/ceil.cc

@@ -0,0 +1,64 @@
+/* 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/lite/kernels/internal/reference/ceil.h"
+
+#include "tensorflow/lite/c/c_api_internal.h"
+#include "tensorflow/lite/kernels/internal/tensor_ctypes.h"
+#include "tensorflow/lite/kernels/kernel_util.h"
+
+namespace tflite {
+namespace ops {
+namespace micro {
+namespace ceil {
+
+constexpr int kInputTensor = 0;
+constexpr int kOutputTensor = 0;
+
+TfLiteStatus Prepare(TfLiteContext* context, TfLiteNode* node) {
+  const 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);
+  TF_LITE_ENSURE_EQ(context, output->type, input->type);
+  TF_LITE_ENSURE_EQ(context, output->bytes, input->bytes);
+  TF_LITE_ENSURE_EQ(context, output->dims->size, input->dims->size);
+  for (int i = 0; i < output->dims->size; ++i) {
+    TF_LITE_ENSURE_EQ(context, output->dims->data[i], input->dims->data[i]);
+  }
+  return kTfLiteOk;
+}
+
+TfLiteStatus Eval(TfLiteContext* context, TfLiteNode* node) {
+  const TfLiteTensor* input = GetInput(context, node, kInputTensor);
+  TfLiteTensor* output = GetOutput(context, node, kOutputTensor);
+
+  reference_ops::Ceil(GetTensorShape(input), GetTensorData<float>(input),
+                      GetTensorShape(output), GetTensorData<float>(output));
+
+  return kTfLiteOk;
+}
+}  // namespace ceil
+
+TfLiteRegistration* Register_CEIL() {
+  static TfLiteRegistration r = {/*init=*/nullptr,
+                                 /*free=*/nullptr, ceil::Prepare, ceil::Eval};
+  return &r;
+}
+
+}  // namespace micro
+}  // namespace ops
+}  // namespace tflite

tensorflow/lite/experimental/micro/kernels/ceil_test.cc

@@ -0,0 +1,103 @@
+/* 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/lite/c/builtin_op_data.h"
+#include "tensorflow/lite/c/c_api_internal.h"
+#include "tensorflow/lite/experimental/micro/kernels/all_ops_resolver.h"
+#include "tensorflow/lite/experimental/micro/testing/micro_test.h"
+#include "tensorflow/lite/experimental/micro/testing/test_utils.h"
+
+namespace tflite {
+namespace testing {
+namespace {
+
+void TestCeil(std::initializer_list<int> input_dims_data,
+              std::initializer_list<float> input_data,
+              std::initializer_list<float> expected_output_data,
+              float* output_data) {
+  TfLiteIntArray* input_dims = IntArrayFromInitializer(input_dims_data);
+  TfLiteIntArray* output_dims = IntArrayFromInitializer(input_dims_data);
+  const int output_dims_count = ElementCount(*output_dims);
+  constexpr int inputs_size = 1;
+  constexpr int outputs_size = 1;
+  constexpr int tensors_size = inputs_size + outputs_size;
+  TfLiteTensor tensors[tensors_size] = {
+      CreateFloatTensor(input_data, input_dims, "input_tensor"),
+      CreateFloatTensor(output_data, output_dims, "output_tensor"),
+  };
+  TfLiteContext context;
+  PopulateContext(tensors, tensors_size, &context);
+  ::tflite::ops::micro::AllOpsResolver resolver;
+  const TfLiteRegistration* registration =
+      resolver.FindOp(tflite::BuiltinOperator_CEIL, 1);
+  TF_LITE_MICRO_EXPECT_NE(nullptr, registration);
+
+  int inputs_array_data[] = {1, 0};
+  TfLiteIntArray* inputs_array = IntArrayFromInts(inputs_array_data);
+  int outputs_array_data[] = {1, 1};
+  TfLiteIntArray* outputs_array = IntArrayFromInts(outputs_array_data);
+  TfLiteIntArray* temporaries_array = IntArrayFromInitializer({0});
+  TfLiteNode node;
+  node.inputs = inputs_array;
+  node.outputs = outputs_array;
+  node.temporaries = temporaries_array;
+  node.user_data = nullptr;
+  node.builtin_data = nullptr;
+  node.custom_initial_data = nullptr;
+  node.custom_initial_data_size = 0;
+  node.delegate = nullptr;
+  TF_LITE_MICRO_EXPECT_NE(nullptr, registration->invoke);
+  TF_LITE_MICRO_EXPECT_EQ(kTfLiteOk, registration->invoke(&context, &node));
+  for (int i = 0; i < output_dims_count; ++i) {
+    TF_LITE_MICRO_EXPECT_NEAR(expected_output_data.begin()[i], output_data[i],
+                              1e-5f);
+  }
+}
+
+}  // namespace
+}  // namespace testing
+}  // namespace tflite
+
+TF_LITE_MICRO_TESTS_BEGIN
+
+TF_LITE_MICRO_TEST(SingleDim) {
+  float output_data[2];
+  tflite::testing::TestCeil({1, 2},      // input_dims_data
+                            {8.5, 0.0},  // input_data
+                            {9, 0},      // expected_output_data
+                            output_data);
+}
+
+TF_LITE_MICRO_TEST(MultiDims) {
+  float output_data[10];
+  tflite::testing::TestCeil(
+      {4, 2, 1, 1, 5},  // input_dims_data
+      {
+          0.0001,
+          8.0001,
+          0.9999,
+          9.9999,
+          0.5,
+          -0.0001,
+          -8.0001,
+          -0.9999,
+          -9.9999,
+          -0.5,
+      },                                  // input_data
+      {1, 9, 1, 10, 1, 0, -8, 0, -9, 0},  // expected_output_data
+      output_data);
+}
+
+TF_LITE_MICRO_TESTS_END

tensorflow/lite/experimental/micro/tools/make/Makefile

@@ -109,6 +109,7 @@ tensorflow/lite/kernels/internal/compatibility.h \
 tensorflow/lite/kernels/internal/optimized/neon_check.h \
 tensorflow/lite/kernels/internal/reference/binary_function.h \
 tensorflow/lite/kernels/internal/reference/comparisons.h \
+tensorflow/lite/kernels/internal/reference/ceil.h \
 tensorflow/lite/kernels/internal/reference/conv.h \
 tensorflow/lite/kernels/internal/reference/depthwiseconv_float.h \
 tensorflow/lite/kernels/internal/reference/depthwiseconv_uint8.h \

tensorflow/lite/kernels/internal/BUILD

@@ -361,6 +361,7 @@ cc_library(
         "reference/add.h",
         "reference/arg_min_max.h",
         "reference/binary_function.h",
+        "reference/ceil.h",
         "reference/comparisons.h",
         "reference/conv.h",
         "reference/depthwiseconv_float.h",
@@ -423,6 +424,7 @@ cc_library(
         "reference/add.h",
         "reference/arg_min_max.h",
         "reference/binary_function.h",
+        "reference/ceil.h",
         "reference/comparisons.h",
         "reference/conv.h",
         "reference/depthwiseconv_float.h",

tensorflow/lite/kernels/internal/reference/ceil.h

@@ -0,0 +1,37 @@
+/* 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.
+==============================================================================*/
+#ifndef TENSORFLOW_LITE_KERNELS_INTERNAL_REFERENCE_CEIL_H_
+#define TENSORFLOW_LITE_KERNELS_INTERNAL_REFERENCE_CEIL_H_
+
+#include <cmath>
+
+#include "tensorflow/lite/kernels/internal/types.h"
+
+namespace tflite {
+
+namespace reference_ops {
+
+inline void Ceil(const RuntimeShape& input_shape, const float* input_data,
+                 const RuntimeShape& output_shape, float* output_data) {
+  const int flat_size = MatchingFlatSize(input_shape, output_shape);
+
+  for (int i = 0; i < flat_size; ++i) {
+    output_data[i] = std::ceil(input_data[i]);
+  }
+}
+
+}  // namespace reference_ops
+}  // namespace tflite
+#endif  // TENSORFLOW_LITE_KERNELS_INTERNAL_REFERENCE_CEIL_H_

tensorflow/lite/kernels/internal/reference/reference_ops.h

@@ -35,6 +35,7 @@ limitations under the License.
 #include "tensorflow/lite/kernels/internal/reference/add.h"
 #include "tensorflow/lite/kernels/internal/reference/arg_min_max.h"
 #include "tensorflow/lite/kernels/internal/reference/binary_function.h"
+#include "tensorflow/lite/kernels/internal/reference/ceil.h"
 #include "tensorflow/lite/kernels/internal/reference/comparisons.h"
 #include "tensorflow/lite/kernels/internal/reference/conv.h"
 #include "tensorflow/lite/kernels/internal/reference/floor.h"
@@ -2158,16 +2159,6 @@ T FloorMod(T input1, T input2) {
              : trunc_mod;
 }
 
-inline void Ceil(const RuntimeShape& input_shape, const float* input_data,
-                 const RuntimeShape& output_shape, float* output_data) {
-  const int flat_size = MatchingFlatSize(input_shape, output_shape);
-
-  for (int i = 0; i < flat_size; i++) {
-    int offset = i;
-    output_data[offset] = std::ceil(input_data[offset]);
-  }
-}
-
 inline float RoundToNearest(float value) {
   auto floor_val = std::floor(value);
   auto diff = value - floor_val;