Incorrect logic in readers writers problem

[SinghCoder]

Hey,
Thanks for this organized collection of notes.
Was reading through Threads and concurrency Section
The solution to Readers-Writers it says is:

if ((read_count == 0) & (read_count == 0))
    R okay, W okay
if (read_count > 0)
    R okay    
if (read_count == 1)
    R not-okay, W not-okay  

I think it should be instead

if ((read_count == 0) & (write_count == 0))
    R okay, W okay
if (read_count > 0)
    R okay    
if (write_count == 1)
    R not-okay, W not-okay