CFSETOSPEED(3P)                                     POSIX Programmer's Manual                                    CFSETOSPEED(3P)



PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (con-
       sult the corresponding Linux manual page for details of Linux behavior), or the  interface  may  not  be  implemented  on
       Linux.

NAME
       cfsetospeed - set output baud rate

SYNOPSIS
       #include <termios.h>

       int cfsetospeed(struct termios *termios_p, speed_t speed);


DESCRIPTION
       The cfsetospeed() function shall set the output baud rate stored in the structure pointed to by termios_p to speed.

       There shall be no effect on the baud rates set in the hardware until a subsequent successful call to tcsetattr() with the
       same termios structure. Similarly, errors resulting from attempts to set baud rates not supported by the terminal  device
       need not be detected until the tcsetattr() function is called.

RETURN VALUE
       Upon  successful completion, cfsetospeed() shall return 0; otherwise, it shall return -1 and errno may be set to indicate
       the error.

ERRORS
       The cfsetospeed() function may fail if:

       EINVAL The speed value is not a valid baud rate.

       EINVAL The value of speed is outside the range of possible speed values as specified in <termios.h>.


       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       Refer to cfgetispeed().

FUTURE DIRECTIONS
       None.

SEE ALSO
       cfgetispeed(), cfgetospeed(), cfsetispeed(), tcsetattr(), the Base Definitions volume  of  IEEE Std 1003.1-2001,  Chapter
       11, General Terminal Interface, <termios.h>

COPYRIGHT
       Portions  of  this  text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for
       Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6,  Copy-
       right (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any
       discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open  Group
       Standard   is   the   referee   document.   The   original   Standard   can   be   obtained  online  at  http://www.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                               CFSETOSPEED(3P)