inline XMVECTOR XM_CALLCONV XMLoadFloat3PK()

in Inc/DirectXPackedVector.inl [1159:1270]
89 lines of code
13 McCabe index (conditional complexity)

inline XMVECTOR XM_CALLCONV XMLoadFloat3PK(const XMFLOAT3PK* pSource) noexcept
{
    assert(pSource);

    XM_ALIGNED_DATA(16) uint32_t Result[4];
    uint32_t Mantissa;
    uint32_t Exponent;

    // X Channel (6-bit mantissa)
    Mantissa = pSource->xm;

    if (pSource->xe == 0x1f) // INF or NAN
    {
        Result[0] = static_cast<uint32_t>(0x7f800000 | (static_cast<int>(pSource->xm) << 17));
    }
    else
    {
        if (pSource->xe != 0) // The value is normalized
        {
            Exponent = pSource->xe;
        }
        else if (Mantissa != 0) // The value is denormalized
        {
            // Normalize the value in the resulting float
            Exponent = 1;

            do
            {
                Exponent--;
                Mantissa <<= 1;
            } while ((Mantissa & 0x40) == 0);

            Mantissa &= 0x3F;
        }
        else // The value is zero
        {
            Exponent = static_cast<uint32_t>(-112);
        }

        Result[0] = ((Exponent + 112) << 23) | (Mantissa << 17);
    }

    // Y Channel (6-bit mantissa)
    Mantissa = pSource->ym;

    if (pSource->ye == 0x1f) // INF or NAN
    {
        Result[1] = static_cast<uint32_t>(0x7f800000 | (static_cast<int>(pSource->ym) << 17));
    }
    else
    {
        if (pSource->ye != 0) // The value is normalized
        {
            Exponent = pSource->ye;
        }
        else if (Mantissa != 0) // The value is denormalized
        {
            // Normalize the value in the resulting float
            Exponent = 1;

            do
            {
                Exponent--;
                Mantissa <<= 1;
            } while ((Mantissa & 0x40) == 0);

            Mantissa &= 0x3F;
        }
        else // The value is zero
        {
            Exponent = static_cast<uint32_t>(-112);
        }

        Result[1] = ((Exponent + 112) << 23) | (Mantissa << 17);
    }

    // Z Channel (5-bit mantissa)
    Mantissa = pSource->zm;

    if (pSource->ze == 0x1f) // INF or NAN
    {
        Result[2] = static_cast<uint32_t>(0x7f800000 | (static_cast<int>(pSource->zm) << 17));
    }
    else
    {
        if (pSource->ze != 0) // The value is normalized
        {
            Exponent = pSource->ze;
        }
        else if (Mantissa != 0) // The value is denormalized
        {
            // Normalize the value in the resulting float
            Exponent = 1;

            do
            {
                Exponent--;
                Mantissa <<= 1;
            } while ((Mantissa & 0x20) == 0);

            Mantissa &= 0x1F;
        }
        else // The value is zero
        {
            Exponent = static_cast<uint32_t>(-112);
        }

        Result[2] = ((Exponent + 112) << 23) | (Mantissa << 18);
    }

    return XMLoadFloat3A(reinterpret_cast<const XMFLOAT3A*>(&Result));
}