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sourcestats: add upper bound for skew

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This commit is contained in:
Miroslav Lichvar 2016-12-14 08:59:52 +01:00
parent 11f7cc0507
commit 2e311d1766
1 changed files with 3 additions and 4 deletions
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7
sourcestats.c
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@ -47,8 +47,9 @@
2000ppm, which would be pretty bad */
#define WORST_CASE_FREQ_BOUND (2000.0/1.0e6)
/* The minimum allowed skew */
/* The minimum and maximum assumed skew */
#define MIN_SKEW 1.0e-12
#define MAX_SKEW 1.0e+02
/* The minimum assumed std dev for weighting */
#define MIN_WEIGHT_SD 1.0e-9
@ -541,9 +542,7 @@ SST_DoNewRegression(SST_Stats inst)
inst->std_dev = sqrt(est_var);
inst->nruns = nruns;
if (inst->skew < MIN_SKEW)
inst->skew = MIN_SKEW;
inst->skew = CLAMP(MIN_SKEW, inst->skew, MAX_SKEW);
stress = fabs(old_freq - inst->estimated_frequency) / old_skew;
DEBUG_LOG(LOGF_SourceStats, "off=%e freq=%e skew=%e n=%d bs=%d runs=%d asym=%f arun=%d",