1 /* Copyright 2020 The TensorFlow Authors. All Rights Reserved.
2 
3 Licensed under the Apache License, Version 2.0 (the "License");
4 you may not use this file except in compliance with the License.
5 You may obtain a copy of the License at
6 
7     http://www.apache.org/licenses/LICENSE-2.0
8 
9 Unless required by applicable law or agreed to in writing, software
10 distributed under the License is distributed on an "AS IS" BASIS,
11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 See the License for the specific language governing permissions and
13 limitations under the License.
14 ==============================================================================*/
15 #ifndef TENSORFLOW_LITE_MICRO_KERNELS_QUANTIZE_H_
16 #define TENSORFLOW_LITE_MICRO_KERNELS_QUANTIZE_H_
17 
18 #include "tensorflow/lite/c/common.h"
19 #include "tensorflow/lite/kernels/internal/types.h"
20 
21 namespace tflite {
22 
23 struct OpDataQuantizeReference {
24   tflite::QuantizationParams quantization_params;
25   // The scaling factor from input to output (aka the 'real multiplier') can
26   // be represented as a fixed point multiplier plus a left shift.
27   int32_t requantize_output_multiplier;
28   int requantize_output_shift;
29 
30   int32_t input_zero_point;
31 };
32 
33 TfLiteStatus EvalQuantizeReference(TfLiteContext* context, TfLiteNode* node);
34 TfLiteStatus PrepareQuantizeReference(TfLiteContext* context, TfLiteNode* node);
35 }  // namespace tflite
36 
37 #endif  // TENSORFLOW_LITE_MICRO_KERNELS_QUANTIZE_H_
38