Revision 10832,
693 bytes
checked in by brlewis, 27 years ago
(diff) |
This commit was generated by cvs2svn to compensate for changes in r10831,
which included commits to RCS files with non-trunk default branches.
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Property svn:executable set to
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1 | #! /usr/local/bin/perl |
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2 | # |
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3 | # drift of 104.8576 -> +1 tick. Base of 10000 ticks. |
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4 | # |
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5 | # 970306 HMS Deal with nanoseconds. Fix sign of adjustments. |
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6 | |
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7 | $df="/etc/ntp.drift"; |
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8 | # Assumes a 100Hz box with "tick" of 10000 |
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9 | # Someday, we might call "tickadj" for better values... |
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10 | $base=10000; # tick: 1,000,000 / HZ |
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11 | $cvt=104.8576; # 2 ** 20 / $base |
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12 | $v1=0.; |
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13 | $v2=""; |
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14 | |
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15 | if (open(DF, $df)) |
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16 | { |
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17 | if ($_=<DF>) |
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18 | { |
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19 | ($v1, $v2) = split; |
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20 | } |
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21 | |
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22 | while ($v1 < 0) |
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23 | { |
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24 | $v1 += $cvt; |
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25 | $base--; |
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26 | } |
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27 | |
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28 | while ($v1 > $cvt) |
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29 | { |
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30 | $v1 -= $cvt; |
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31 | $base++; |
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32 | } |
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33 | } |
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34 | |
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35 | printf("%.3f (drift)\n", $v1); |
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36 | |
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37 | printf("%d usec; %d nsec\n", $base, ($base + ($v1/$cvt)) * 1000); |
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38 | |
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