round_shift_right_u64()

u32 fl::detail::round_shift_right_u64 ( u64 value, int shift )

inline

Definition at line 144 of file json.h.

   : fl::true_type {};
 
inline u32 round_shift_right_u64(u64 value, int shift) FL_NO_EXCEPT {
    if (shift <= 0) {
        return static_cast<u32>(value);
    }
    if (shift >= 64) {
        return 0;
    }
    const u64 half = u64(1) << (shift - 1);
    const u64 mask = (u64(1) << shift) - 1;
    const u64 truncated = value >> shift;
    const u64 remainder = value & mask;
    const bool round_up = remainder > half || (remainder == half && (truncated & 1));