Word.cpp

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#include "Word.hpp"
 
namespace MayaFlux::Kinesis::Discrete {
 
namespace {
 
    constexpr uint32_t max_bits = 24;
 
    [[nodiscard]] double top(uint32_t bits) noexcept
    {
        return static_cast<double>((uint32_t { 1 } << std::clamp(bits, uint32_t { 1 }, max_bits)) - 1U);
    }
 
}
 
uint32_t to_word(double value, uint32_t bits) noexcept
{
    const double clamped = std::clamp(value, -1.0, 1.0);
    return static_cast<uint32_t>(std::lrint((clamped + 1.0) * 0.5 * top(bits)));
}
 
double from_word(uint32_t word, uint32_t bits) noexcept
{
    const double highest = top(bits);
    const auto masked = static_cast<double>(word & static_cast<uint32_t>(highest));
    return masked / highest * 2.0 - 1.0;
}
 
} // namespace MayaFlux::Kinesis::Discrete