PROLOG

       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of
       this interface may differ (consult 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  POSIX.1‐2017,  Chapter 11, General Terminal Interface,
       <termios.h>

COPYRIGHT

       Portions of this text are reprinted and  reproduced  in  electronic  form  from  IEEE  Std
       1003.1-2017,  Standard  for  Information Technology -- Portable Operating System Interface
       (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C)  2018  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.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page are most  likely  to  have
       been  introduced  during  the conversion of the source files to man page format. To report
       such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .