sqrt - 컴퓨터

float sqrt3(const float& n)                                                                       
{                                                                                                 
    //https://www.gamedev.net/forums/topic/704525-3-quick-ways-to-calculate-the-square-root-in-c/ 
    if (n == 0)                                                                                   
        return 0.0f;                                                                              
    static union { int i; float f; } u;                                                           
    u.i = 0x2035AD0C + (*(int*)&n >> 1);                                                          
    return n / u.f + u.f * 0.25f;                                                                 
}                                                                                                 

WSL ssh - 컴퓨터

WSL
set up ssh server and change its port number using /etc/ssh/sshd_config
then open the firewall
sudo ufw allow $PORT/tcp

Powershell
netsh interface portproxy add v4tov4 listenport=PORT listenaddress='0.0.0.0' connectport=PORT connectaddress=WSL_IP

// WSL uses its own IP address thus you need to check the ip then set port forwarding using the command above.

Goodbye my old friend - 자동차