This is a Standard C Library...  but here are the changes from Standard C...

qfree() - returns :
          eax=largest free block of RAM
          ebx=total free RAM

atol() and atoi() are replaced with str2num()
          #defines are placed in qlib.h if you still use the old names

ltoa() and itoa() are replaced with num2str_*()
          There are many versions of num2str_*:
            each following this form: num2str_<b,w,d>[h,b] ();
            where b=byte w=word d=dword
                  h=hex b=binary (optional default=decimal)
            NOTE: leading zeros are NOT removed (use printf which will
              remove them)

printf's format chars have changed:
          Basic format is now: % [0] [+] [H,B,S] <b,w,d,c,s>
          where b=byte w=word d=dword c=char s=string
                H=hex B=binary S=signed
                +=print + if it is positive (normally only prints - sign)
                0=leave all leading zeros
          sprintf(),sscanf() use the same formats

PLAY.OBJ
 the play rountines have changed a lot...
 see txt\play.txt for more details