Function canUseWave3

src/fl/channels/wave3.cpp.hpp:24–47

// ============================================================================

FL_OPTIMIZE_FUNCTION
bool canUseWave3(const ChipsetTiming& timing) {
    const u32 period = timing.T1 + timing.T2 + timing.T3;
    if (period == 0) {
        return false;
    }

    // T0H = T1, T1H = T1 + T2
    const float t0h_norm = static_cast<float>(timing.T1) / period;
    const float t1h_norm = static_cast<float>(timing.T1 + timing.T2) / period;

    // Round to nearest integer tick count out of 3
    u32 ticks_bit0 = static_cast<u32>(t0h_norm * 3.0f + 0.5f);
    u32 ticks_bit1 = static_cast<u32>(t1h_norm * 3.0f + 0.5f);

    // Both must be in [1, 2] (need at least 1 high tick and 1 low tick)
    if (ticks_bit0 < 1 || ticks_bit0 > 2) return false;
    if (ticks_bit1 < 1 || ticks_bit1 > 2) return false;

    // Must be different (one is 1-tick, other is 2-tick)
    if (ticks_bit0 == ticks_bit1) return false;

    return true;
}

// ============================================================================
// Wave3 Clock Frequency