telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2017 Arm Ltd. All rights reserved. |
David Beck | ecb56cd | 2018-09-05 12:52:57 +0100 | [diff] [blame] | 3 | // SPDX-License-Identifier: MIT |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 4 | // |
Jim Flynn | e242f2d | 2019-05-22 14:24:13 +0100 | [diff] [blame] | 5 | |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 6 | #pragma once |
| 7 | |
| 8 | #include <armnn/ArmNN.hpp> |
| 9 | #include <armnn/TypesUtils.hpp> |
| 10 | |
| 11 | #include <initializer_list> |
| 12 | #include <iterator> |
| 13 | #include <vector> |
Aron Virginas-Tar | d4f0fea | 2019-04-09 14:08:06 +0100 | [diff] [blame] | 14 | |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 15 | #include <boost/core/ignore_unused.hpp> |
Aron Virginas-Tar | d4f0fea | 2019-04-09 14:08:06 +0100 | [diff] [blame] | 16 | #include <boost/numeric/conversion/cast.hpp> |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 17 | |
| 18 | template<typename T, bool DoQuantize=true> |
| 19 | struct SelectiveQuantizer |
| 20 | { |
| 21 | static T Quantize(float value, float scale, int32_t offset) |
| 22 | { |
| 23 | return armnn::Quantize<T>(value, scale, offset); |
| 24 | } |
| 25 | |
| 26 | static float Dequantize(T value, float scale, int32_t offset) |
| 27 | { |
| 28 | return armnn::Dequantize(value, scale, offset); |
| 29 | } |
| 30 | }; |
| 31 | |
| 32 | template<typename T> |
| 33 | struct SelectiveQuantizer<T, false> |
| 34 | { |
| 35 | static T Quantize(float value, float scale, int32_t offset) |
| 36 | { |
| 37 | boost::ignore_unused(scale, offset); |
| 38 | return value; |
| 39 | } |
| 40 | |
| 41 | static float Dequantize(T value, float scale, int32_t offset) |
| 42 | { |
| 43 | boost::ignore_unused(scale, offset); |
| 44 | return value; |
| 45 | } |
| 46 | }; |
| 47 | |
| 48 | template<typename T> |
| 49 | T SelectiveQuantize(float value, float scale, int32_t offset) |
| 50 | { |
| 51 | return SelectiveQuantizer<T, armnn::IsQuantizedType<T>()>::Quantize(value, scale, offset); |
| 52 | }; |
| 53 | |
| 54 | template<typename T> |
| 55 | float SelectiveDequantize(T value, float scale, int32_t offset) |
| 56 | { |
| 57 | return SelectiveQuantizer<T, armnn::IsQuantizedType<T>()>::Dequantize(value, scale, offset); |
| 58 | }; |
| 59 | |
| 60 | template<typename ItType> |
| 61 | struct IsFloatingPointIterator |
| 62 | { |
| 63 | static constexpr bool value=std::is_floating_point<typename std::iterator_traits<ItType>::value_type>::value; |
| 64 | }; |
| 65 | |
| 66 | template <typename T, typename FloatIt, |
telsoa01 | c577f2c | 2018-08-31 09:22:23 +0100 | [diff] [blame] | 67 | typename std::enable_if<IsFloatingPointIterator<FloatIt>::value, int>::type=0 // Makes sure fp iterator is valid. |
telsoa01 | 4fcda01 | 2018-03-09 14:13:49 +0000 | [diff] [blame] | 68 | > |
| 69 | std::vector<T> QuantizedVector(float qScale, int32_t qOffset, FloatIt first, FloatIt last) |
| 70 | { |
| 71 | std::vector<T> quantized; |
| 72 | quantized.reserve(boost::numeric_cast<size_t>(std::distance(first, last))); |
| 73 | |
| 74 | for (auto it = first; it != last; ++it) |
| 75 | { |
| 76 | auto f = *it; |
| 77 | T q =SelectiveQuantize<T>(f, qScale, qOffset); |
| 78 | quantized.push_back(q); |
| 79 | } |
| 80 | |
| 81 | return quantized; |
| 82 | } |
| 83 | |
| 84 | template<typename T> |
| 85 | std::vector<T> QuantizedVector(float qScale, int32_t qOffset, const std::vector<float>& array) |
| 86 | { |
| 87 | return QuantizedVector<T>(qScale, qOffset, array.begin(), array.end()); |
| 88 | } |
| 89 | |
| 90 | template<typename T> |
| 91 | std::vector<T> QuantizedVector(float qScale, int32_t qOffset, std::initializer_list<float> array) |
| 92 | { |
| 93 | return QuantizedVector<T>(qScale, qOffset, array.begin(), array.end()); |
| 94 | } |