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/* vi: set sw=4 ts=4: */
/*
* compact speed_t <-> speed functions for busybox
*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
static const unsigned short speeds[] = {
0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600,
19200, 38400, 57600>>8, 115200>>8, 230400>>8, 460800>>8, 500000>>8,
576000>>8, 921600>>8, 1000000>>8, 1152000>>8, 1500000>>8, 2000000>>8,
3000000>>8, 3500000>>8, 4000000>>8
};
unsigned int tty_baud_to_value(speed_t speed)
{
int i;
for (i=0; i<sizeof(speeds) / sizeof(*speeds); i++)
if (speed == speeds[i] * (i>15 ? 256 : 1))
return i>15 ? (i+4096-14) : i;
return 0;
}
speed_t tty_value_to_baud(unsigned int value)
{
int i;
for (i=0; i<sizeof(speeds) / sizeof(*speeds); i++)
if (value == (i>15 ? (i+4096-14) : i))
return speeds[i] * (i>15 ? 256 : 1);
return -1;
}
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