55 lines
1.2 KiB
C++
55 lines
1.2 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* Copyright 2010 Danny Robson <danny@nerdcruft.net>
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*/
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#pragma once
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#include <iosfwd>
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#include <fmt/core.h>
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namespace cruft {
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namespace stats {
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// Undefined until at least one value has been added.
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template <typename T>
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struct accumulator {
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accumulator ();
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void reset (void);
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void add (T);
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void add (const accumulator<T> &);
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size_t count;
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T min;
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T max;
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T sum;
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T range (void) const;
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T mean (void) const;
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};
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template <typename T>
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std::ostream&
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operator<< (std::ostream&, const accumulator<T>&);
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}
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}
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template <typename T>
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struct fmt::formatter<cruft::stats::accumulator<T>> {
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constexpr format_parse_context::iterator
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parse (format_parse_context &ctx)
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{
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return ctx.begin ();
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}
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format_context::iterator
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format (cruft::stats::accumulator<T> const&, format_context &ctx) const;
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}; |