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



PPRROOLLOOGG
       This manual page is part of the POSIX Programmer's Manual.  The OS
       implementation of this interface may differ (consult the corresponding
       OS manual page for details of OS behavior), or the interface may not be
       implemented on OS.

NNAAMMEE
       cfsetospeed -- set output baud rate

SSYYNNOOPPSSIISS
       #include <termios.h>

       int cfsetospeed(struct termios *_t_e_r_m_i_o_s___p, speed_t _s_p_e_e_d);

DDEESSCCRRIIPPTTIIOONN
       The _c_f_s_e_t_o_s_p_e_e_d() function shall set the output baud rate stored in the
       structure pointed to by _t_e_r_m_i_o_s___p to _s_p_e_e_d.

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

RREETTUURRNN VVAALLUUEE
       Upon successful completion, _c_f_s_e_t_o_s_p_e_e_d() shall return 0; otherwise, it
       shall return -1 and _e_r_r_n_o may be set to indicate the error.

EERRRROORRSS
       The _c_f_s_e_t_o_s_p_e_e_d() function may fail if:

       EEIINNVVAALL The _s_p_e_e_d value is not a valid baud rate.

       EEIINNVVAALL The value of _s_p_e_e_d is outside the range of possible speed values
              as specified in _<_t_e_r_m_i_o_s_._h_>.

       _T_h_e _f_o_l_l_o_w_i_n_g _s_e_c_t_i_o_n_s _a_r_e _i_n_f_o_r_m_a_t_i_v_e_.

EEXXAAMMPPLLEESS
       None.

AAPPPPLLIICCAATTIIOONN UUSSAAGGEE
       None.

RRAATTIIOONNAALLEE
       Refer to _c_f_g_e_t_i_s_p_e_e_d().

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       None.

SSEEEE AALLSSOO
       _c_f_g_e_t_i_s_p_e_e_d(), _c_f_g_e_t_o_s_p_e_e_d(), _c_f_s_e_t_i_s_p_e_e_d(), _t_c_s_e_t_a_t_t_r()

       The Base Definitions volume of POSIX.1-2017, _C_h_a_p_t_e_r _1_1, _G_e_n_e_r_a_l
       _T_e_r_m_i_n_a_l _I_n_t_e_r_f_a_c_e, <<tteerrmmiiooss..hh>>

CCOOPPYYRRIIGGHHTT
       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 .



IEEE/The Open Group                  2017                       CFSETOSPEED(3)
