soft_round_shift_right_u64()

u32 fl::detail::soft_round_shift_right_u64 ( u64 value, int shift )

inline

Definition at line 58 of file soft_float.h.

                                                                         {
    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));
    return static_cast<u32>(truncated + (round_up ? 1 : 0));
}

References fl::FL_NO_EXCEPT, and fl::type_rank< T >::value.

Referenced by json_round_shift_right_u64(), and soft_float_bits_from_scaled_u64().

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