1 /* 2 * Copyright (c) 2019 Arm Limited. 3 * 4 * SPDX-License-Identifier: MIT 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in all 14 * copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 25 #pragma once 26 #include <cstdint> 27 #include <vector> 28 #include "qasymm8.hpp" 29 30 31 namespace qsymm8 { 32 33 struct QSymm8Params { 34 int8_t quantize(float value) const; 35 float dequantize(int8_t value) const; 36 37 float scale; 38 }; 39 40 struct QSymm8RescaleParams { 41 static QSymm8RescaleParams 42 make_rescale_params(const QSymm8Params &weight_quant, 43 const QSymm8Params &input_quant, 44 const QSymm8Params &output_quant); 45 46 QSymm8RescaleParams(int32_t shift, int32_t multiplier, float rescale); 47 48 const int32_t shift, multiplier; 49 const float rescale; 50 }; 51 52 struct QSymm8PerChannelParams { 53 int8_t quantize(float value, float scale) const; 54 float dequantize(int8_t value, float scale) const; 55 56 std::vector<float> scales; 57 }; 58 59 struct QSymm8PerChannelRescaleParams { 60 static QSymm8PerChannelRescaleParams 61 make_rescale_params(const QSymm8PerChannelParams &weight_quant, 62 const QSymm8PerChannelParams &input_quant, 63 const QSymm8PerChannelParams &output_quant); 64 65 static QSymm8PerChannelRescaleParams 66 make_rescale_params(const QSymm8PerChannelParams &weight_quant, 67 const qasymm8::QAsymm8Params &input_quant, 68 const qasymm8::QAsymm8Params &output_quant); 69 70 QSymm8PerChannelRescaleParams(std::vector<int32_t>& shift, std::vector<int32_t>& multiplier, std::vector<float>& rescale); 71 72 std::vector<int32_t> shifts, multipliers; 73 std::vector<float> rescales; 74 }; 75 76 } // namespace qsymm8 77