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-rw-r--r--samplefilt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/samplefilt.c b/samplefilt.c
index 7226963..2b737e9 100644
--- a/samplefilt.c
+++ b/samplefilt.c
@@ -75,7 +75,7 @@ SPF_CreateInstance(int min_samples, int max_samples, double max_dispersion, doub
filter->last = -1;
/* Set the first estimate to the system precision */
filter->avg_var_n = 0;
- filter->avg_var = LCL_GetSysPrecisionAsQuantum() * LCL_GetSysPrecisionAsQuantum();
+ filter->avg_var = SQUARE(LCL_GetSysPrecisionAsQuantum());
filter->max_var = SQUARE(max_dispersion);
filter->combine_ratio = combine_ratio;
filter->samples = MallocArray(NTP_Sample, filter->max_samples);