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5f638f5553
This change updates the ColumnLimit from 80 to 120, and applies clang-format to reformat the code.
43 lines
1.0 KiB
C++
43 lines
1.0 KiB
C++
#include <xrpl/basics/Number.h>
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#include <xrpl/basics/contract.h>
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#include <xrpl/beast/utility/Zero.h>
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#include <xrpl/protocol/Quality.h>
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#include <xrpl/protocol/QualityFunction.h>
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#include <optional>
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#include <stdexcept>
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namespace xrpl {
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QualityFunction::QualityFunction(Quality const& quality, QualityFunction::CLOBLikeTag) : m_(0), b_(0), quality_(quality)
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{
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if (quality.rate() <= beast::zero)
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Throw<std::runtime_error>("QualityFunction quality rate is 0.");
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b_ = 1 / quality.rate();
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}
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void
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QualityFunction::combine(QualityFunction const& qf)
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{
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m_ += b_ * qf.m_;
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b_ *= qf.b_;
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if (m_ != 0)
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quality_ = std::nullopt;
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}
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std::optional<Number>
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QualityFunction::outFromAvgQ(Quality const& quality)
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{
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if (m_ != 0 && quality.rate() != beast::zero)
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{
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saveNumberRoundMode rm(Number::setround(Number::rounding_mode::upward));
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auto const out = (1 / quality.rate() - b_) / m_;
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if (out <= 0)
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return std::nullopt;
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return out;
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}
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return std::nullopt;
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}
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} // namespace xrpl
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