f848a30a3e
The first half of the telecom algorithm from G.8275.1 and G.8275.2 differs from the one in 1588, making use of profile specific "localPriority" attributes. Signed-off-by: Richard Cochran <richardcochran@gmail.com>
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/**
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* @file telecom.c
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* @note Copyright (C) 2017 Richard Cochran <richardcochran@gmail.com>
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*
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* Derived from code in bmc.c.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA.
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*/
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#include <string.h>
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#include "bmc.h"
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#include "ds.h"
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int telecom_dscmp(struct dataset *a, struct dataset *b)
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{
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int diff;
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if (a == b)
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return 0;
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if (a && !b)
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return A_BETTER;
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if (b && !a)
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return B_BETTER;
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if (a->quality.clockClass < b->quality.clockClass)
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return A_BETTER;
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if (a->quality.clockClass > b->quality.clockClass)
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return B_BETTER;
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if (a->quality.clockAccuracy < b->quality.clockAccuracy)
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return A_BETTER;
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if (a->quality.clockAccuracy > b->quality.clockAccuracy)
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return B_BETTER;
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if (a->quality.offsetScaledLogVariance <
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b->quality.offsetScaledLogVariance)
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return A_BETTER;
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if (a->quality.offsetScaledLogVariance >
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b->quality.offsetScaledLogVariance)
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return B_BETTER;
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if (a->priority2 < b->priority2)
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return A_BETTER;
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if (a->priority2 > b->priority2)
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return B_BETTER;
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if (a->localPriority < b->localPriority)
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return A_BETTER;
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if (a->localPriority > b->localPriority)
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return B_BETTER;
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if (a->quality.clockClass <= 127)
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return dscmp2(a, b);
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diff = memcmp(&a->identity, &b->identity, sizeof(a->identity));
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if (!diff)
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return dscmp2(a, b);
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return diff < 0 ? A_BETTER : B_BETTER;
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}
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