// Client, send:
    char BufferToSend[ sizeof(float) ];
    float FloatToSend = 4.42;
    BufferToSend = &FloatToSend;

    send(Connect, BufferToSend, sizeof(float), 0);

    // Server, recieve:
    recv(Connect, myBuffer, recvbuflen, 0);
    float *x;
    x = &myBuffer;
    // x is now the float you've sent up there