cfgetospeed(3P)                                   cfgetospeed(3P)



NAME
     cfgetospeed, cfgetispeed, cfsetospeed, cfsetispeed -
     get or set the value of the output and input baud rate

SYNOPSIS
     #include <termios.h>

     speed_t cfgetospeed(termio_p)
     struct termios *termio_p;

     speed_t cfgetispeed(termio_p)
     struct termios *termio_p;

     cfsetospeed(termio_p,speed)
     struct termios *termio_p;
     speed_t speed;

     cfsetispeed(termio_p,speed)
     struct termios *termio_p;
     speed_t speed;

DESCRIPTION
     These routines are used for getting and setting the input
     and output baud rate.  A/UX does not support different
     values for the input and output baud rate; cfsetispeed and
     cfsetospeed change both the input and output baud rate.

     cfgetospeed returns the output baud rate stored in the
     c_cflag that is referenced by termio_p.

     cfgetispeed returns the input baud rate stored in the
     c_cflag that is referenced by termio_p.

     The following baud- rate values are supported for the value
     of speed:

        B0        Hang up
        B50       50 baud
        B75       75 baud
        B110      110 baud
        B134      134 baud
        B150      150 baud
        B200      200 baud
        B300      300 baud
        B600      600 baud
        B1200          1200 baud
        B1800          1800 baud
        B2400          2400 baud
        B4800          4800 baud
        B9600          9600 baud
        B19200    19200 baud
        B38400    38400 baud



January 1992                                                    1

cfgetospeed(3P)                                   cfgetospeed(3P)



     cfsetospeed sets the baud rate stored in c_cflag that is
     referenced by termio_p to speed.  B0 is used to terminate
     the connection.  If B0 is specified, the modem control lines
     are no longer asserted.

     cfsetispeed sets the baud rate stored in c_cflag that is
     referenced by termio_p to speed.  If speed is 0, the baud-
     rate is not changed.

     For any particular hardware, unsupported baud rate changes
     are ignored.

     cfsetispeed and cfsetospeed only modify the termios
     structure.  For the baud rate changes to take place,
     tcsetattr(3P) must be called with the modified structure as
     an argument.

STATUS MESSAGES AND VALUES
     cfgetispeed and cfgetospeed return the appropriate baud
     rate. On successful completion, cfsetispeed and cfsetospeed
     return 0.  If an error is detected, cfsetospeed and
     cfsetispeed return -1 and set errno to indicate the error.

     If the following condition occurs, cfsetispeed and
     cfsetospeed return -1 and set errno to the corresponding
     value:

     EINVAL
          speed specifies an invalid baud rate.

SEE ALSO
     tcgetattr(3P)

     termios(7P) in A/UX System Administrator's Reference





















2                                                    January 1992