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- /* `struct termios' speed frobnication functions. SunOS 4 version.
- Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <ansidecl.h>
- #include <stddef.h>
- #include <errno.h>
- #include <termios.h>
-
- static CONST speed_t speeds[] =
- {
- 0,
- 50,
- 75,
- 110,
- 134,
- 150,
- 200,
- 300,
- 600,
- 1200,
- 1800,
- 2400,
- 4800,
- 9600,
- 19200,
- 38400,
- };
-
-
- /* Return the output baud rate stored in *TERMIOS_P. */
- speed_t
- DEFUN(cfgetospeed, (termios_p), CONST struct termios *termios_p)
- {
- return termios_p->c_cflag & CBAUD;
- }
-
- /* Return the input baud rate stored in *TERMIOS_P. */
- speed_t
- DEFUN(cfgetispeed, (termios_p), CONST struct termios *termios_p)
- {
- return (termios_p->c_cflag & CIBAUD) >> IBSHIFT;
- }
-
- /* Set the output baud rate stored in *TERMIOS_P to SPEED. */
- int
- DEFUN(cfsetospeed, (termios_p, speed),
- struct termios *termios_p AND speed_t speed)
- {
- register unsigned int i;
-
- if (termios_p == NULL)
- {
- errno = EINVAL;
- return -1;
- }
-
- /* This allows either B1200 or 1200 to work. XXX
- Do we really want to try to support this, given that
- fetching the speed must return one or the other? */
-
- for (i = 0; i < sizeof (speeds) / sizeof (speeds[0]); ++i)
- if (i == speed || speeds[i] == speed)
- {
- termios_p->c_cflag &= ~CBAUD;
- termios_p->c_cflag |= i;
- return 0;
- }
-
- errno = EINVAL;
- return -1;
- }
-
- /* Set the input baud rate stored in *TERMIOS_P to SPEED. */
- int
- DEFUN(cfsetispeed, (termios_p, speed),
- struct termios *termios_p AND speed_t speed)
- {
- register unsigned int i;
-
- if (termios_p == NULL)
- {
- errno = EINVAL;
- return -1;
- }
-
- /* See comment in cfsetospeed (above). */
- for (i = 0; i < sizeof (speeds) / sizeof (speeds[0]); ++i)
- if (i == speed || speeds[i] == speed)
- {
- termios_p->c_cflag &= ~CIBAUD;
- termios_p->c_cflag |= i << IBSHIFT;
- return 0;
- }
-
- errno = EINVAL;
- return -1;
- }
-