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