canHitPhase()

bool fl::can_match_detail::canHitPhase ( fl::u32 effective_clock_hz, fl::u16 max_ticks, const NanosRange & window )

inline

Definition at line 54 of file can_match.cpp.hpp.

                                               {
    if (window.isUnspecified()) {
        // No chipset constraint on this phase.
        return true;
    }
    if (effective_clock_hz == 0u) {
        return false;
    }
    const fl::u64 kBillion = 1000000000ULL;
    const fl::u64 lo_num = static_cast<fl::u64>(window.min_ns) * effective_clock_hz;
    const fl::u64 hi_num = static_cast<fl::u64>(window.max_ns) * effective_clock_hz;
    // ceil(lo_num / kBillion) — divide-and-round-up without overflow.
    fl::u64 n_lo_64 = (lo_num + kBillion - 1ULL) / kBillion;
    fl::u64 n_hi_64 = hi_num / kBillion;
    if (n_lo_64 < 1ULL) {
        n_lo_64 = 1ULL;
    }
    if (n_lo_64 > n_hi_64) {
        return false;
    }
    if (max_ticks != 0u && n_lo_64 > static_cast<fl::u64>(max_ticks)) {
        return false;
    }
    return true;
}

References fl::FL_NO_EXCEPT.

Referenced by isClocklessTimingCompatible().

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