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Diffstat (limited to 'src/ipa/raspberrypi/controller/histogram.hpp')
| -rw-r--r-- | src/ipa/raspberrypi/controller/histogram.hpp | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/src/ipa/raspberrypi/controller/histogram.hpp b/src/ipa/raspberrypi/controller/histogram.hpp deleted file mode 100644 index 2ed8d971..00000000 --- a/src/ipa/raspberrypi/controller/histogram.hpp +++ /dev/null @@ -1,48 +0,0 @@ -/* SPDX-License-Identifier: BSD-2-Clause */ -/* - * Copyright (C) 2019, Raspberry Pi (Trading) Limited - * - * histogram.hpp - histogram calculation interface - */ -#pragma once - -#include <stdint.h> -#include <vector> -#include <cassert> - -/* - * A simple histogram class, for use in particular to find "quantiles" and - * averages between "quantiles". - */ - -namespace RPiController { - -class Histogram -{ -public: - template<typename T> Histogram(T *histogram, int num) - { - assert(num); - cumulative_.reserve(num + 1); - cumulative_.push_back(0); - for (int i = 0; i < num; i++) - cumulative_.push_back(cumulative_.back() + - histogram[i]); - } - uint32_t bins() const { return cumulative_.size() - 1; } - uint64_t total() const { return cumulative_[cumulative_.size() - 1]; } - /* Cumulative frequency up to a (fractional) point in a bin. */ - uint64_t cumulativeFreq(double bin) const; - /* - * Return the (fractional) bin of the point q (0 <= q <= 1) through the - * histogram. Optionally provide limits to help. - */ - double quantile(double q, int first = -1, int last = -1) const; - /* Return the average histogram bin value between the two quantiles. */ - double interQuantileMean(double qLo, double qHi) const; - -private: - std::vector<uint64_t> cumulative_; -}; - -} /* namespace RPiController */ |