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34ef577604
This change replaces all include guards in the `src/` and `include/` directories by `#pragma once`.
24 lines
598 B
C++
24 lines
598 B
C++
#pragma once
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#include <cstdint>
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#include <limits>
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#include <optional>
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namespace xrpl {
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auto constexpr muldiv_max = std::numeric_limits<std::uint64_t>::max();
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/** Return value*mul/div accurately.
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Computes the result of the multiplication and division in
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a single step, avoiding overflow and retaining precision.
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Throws:
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None
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Returns:
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`std::optional`:
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`std::nullopt` if the calculation overflows. Otherwise, `value * mul
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/ div`.
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*/
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std::optional<std::uint64_t>
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mulDiv(std::uint64_t value, std::uint64_t mul, std::uint64_t div);
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} // namespace xrpl
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