49 lines
1.9 KiB
C
49 lines
1.9 KiB
C
/*
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chronyd/chronyc - Programs for keeping computer clocks accurate.
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**********************************************************************
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* Copyright (C) Miroslav Lichvar 2018
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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 version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 02110-1301, USA.
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*
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**********************************************************************
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=======================================================================
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Header file for sample filter.
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*/
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#ifndef GOT_SAMPLEFILT_H
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#define GOT_SAMPLEFILT_H
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#include "ntp.h"
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typedef struct SPF_Instance_Record *SPF_Instance;
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extern SPF_Instance SPF_CreateInstance(int min_samples, int max_samples,
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double max_dispersion, double combine_ratio);
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extern void SPF_DestroyInstance(SPF_Instance filter);
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extern int SPF_AccumulateSample(SPF_Instance filter, NTP_Sample *sample);
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extern int SPF_GetLastSample(SPF_Instance filter, NTP_Sample *sample);
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extern int SPF_GetNumberOfSamples(SPF_Instance filter);
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extern double SPF_GetAvgSampleDispersion(SPF_Instance filter);
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extern void SPF_DropSamples(SPF_Instance filter);
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extern int SPF_GetFilteredSample(SPF_Instance filter, NTP_Sample *sample);
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extern void SPF_SlewSamples(SPF_Instance filter, struct timespec *when,
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double dfreq, double doffset);
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extern void SPF_AddDispersion(SPF_Instance filter, double dispersion);
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#endif
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