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/*
* Copyright (C) 2018 The Android Open Source Project
*
* 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 LIBTEXTCLASSIFIER_ANNOTATOR_QUANTIZATION_H_
#define LIBTEXTCLASSIFIER_ANNOTATOR_QUANTIZATION_H_
#include "utils/base/integral_types.h"
namespace libtextclassifier3 {
// Returns true if the quantization parameters are valid.
bool CheckQuantizationParams(int bytes_per_embedding, int quantization_bits,
int output_embedding_size);
// Dequantizes embeddings (quantized to 1 to 8 bits) into the floats they
// represent. The algorithm proceeds by reading 2-byte words from the embedding
// storage to handle well the cases when the quantized value crosses the byte-
// boundary.
bool DequantizeAdd(const float* scales, const uint8* embeddings,
int bytes_per_embedding, int num_sparse_features,
int quantization_bits, int bucket_id, float* dest,
int dest_size);
} // namespace libtextclassifier3
#endif // LIBTEXTCLASSIFIER_ANNOTATOR_QUANTIZATION_H_