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/freebsd-12-stable/contrib/ntp/ntpd/
H A Dntp_util.c64 static double wander_resid; /* last frequency update */ variable
262 * prev_drift_comp and wander_resid. Thereafter,
263 * reduce the wander_resid by half each hour. When
265 * drift_comp is less than the wander_resid, update
272 (prev_drift_comp - drift_comp) * 1e6, wander_resid *
275 if (fabs(prev_drift_comp - drift_comp) < wander_resid) {
276 wander_resid *= 0.5;
280 wander_resid = wander_threshold;

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