cfsetospeed man page

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.

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.1‐2008, Chapter 11, General Terminal Interface, <termios.h>

Info

2013 IEEE/The Open Group POSIX Programmer's Manual