/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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#ifndef LIBTEXTCLASSIFIER_ANNOTATOR_QUANTIZATION_H_
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#define LIBTEXTCLASSIFIER_ANNOTATOR_QUANTIZATION_H_
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#include "utils/base/integral_types.h"
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namespace libtextclassifier3 {
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// Returns true if the quantization parameters are valid.
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bool CheckQuantizationParams(int bytes_per_embedding, int quantization_bits,
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int output_embedding_size);
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// Dequantizes embeddings (quantized to 1 to 8 bits) into the floats they
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// represent. The algorithm proceeds by reading 2-byte words from the embedding
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// storage to handle well the cases when the quantized value crosses the byte-
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// boundary.
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bool DequantizeAdd(const float* scales, const uint8* embeddings,
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int bytes_per_embedding, int num_sparse_features,
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int quantization_bits, int bucket_id, float* dest,
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int dest_size);
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} // namespace libtextclassifier3
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#endif // LIBTEXTCLASSIFIER_ANNOTATOR_QUANTIZATION_H_
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