mirror of
https://github.com/vee1e/tflite-micro.git
synced 2026-09-03 10:47:33 +00:00
67 lines
No EOL
2.4 KiB
C++
67 lines
No EOL
2.4 KiB
C++
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#include "tensorflow/lite/micro/kernels/micro_tensor_utils.h"
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#include <algorithm>
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#include <cmath>
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#include <cstdint>
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#include <cstring>
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#include <limits>
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#include <utility>
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#include "fixedpoint/fixedpoint.h" // from @gemmlowp
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#include "tensorflow/lite/kernels/internal/common.h"
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#include "tensorflow/lite/kernels/internal/compatibility.h"
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#include "tensorflow/lite/kernels/internal/cppmath.h"
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#include "tensorflow/lite/kernels/op_macros.h"
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namespace tflite {
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// Apply sigmoid to elements of a vector.
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void PortableApplySigmoidToVector(const float* vector, int v_size,
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float* result) {
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for (int v = 0; v < v_size; v++) {
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result[v] = 1.0f / (1.0f + std::exp(-vector[v]));
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}
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}
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void PortableApplyTanhToVector(const float* vector, int v_size, float* result) {
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for (int v = 0; v < v_size; v++) {
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result[v] = std::tanh(vector[v]);
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}
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}
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void PortableApplyActivationToVector(const float* vector, int v_size,
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TfLiteFusedActivation activation,
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float* result) {
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switch (activation) {
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case kTfLiteActNone:
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return;
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case kTfLiteActRelu:
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return tflite::tensor_utils::ApplyReluToVector(vector, v_size, result);
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case kTfLiteActReluN1To1:
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return tflite::tensor_utils::ApplyRelu1ToVector(vector, v_size, result);
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case kTfLiteActRelu6:
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return tflite::tensor_utils::ApplyRelu6ToVector(vector, v_size, result);
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case kTfLiteActTanh:
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return PortableApplyTanhToVector(vector, v_size, result);
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case kTfLiteActSignBit:
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return tflite::tensor_utils::ApplySignbitToVector(vector, v_size, result);
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case kTfLiteActSigmoid:
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return PortableApplySigmoidToVector(vector, v_size, result);
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}
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}
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} // namespace tflite
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