|
@@ -120,9 +120,12 @@ class PerfStatsStats:
|
|
|
|
|
|
def __str__(self):
|
|
|
mean = self.tot/self.N
|
|
|
- stddev = math.sqrt((self.totsq - self.tot*self.tot/self.N) \
|
|
|
- / (self.N - 1))
|
|
|
- return "%f \pm %f" % (mean, stddev)
|
|
|
+ if self.N > 1:
|
|
|
+ stddev = math.sqrt((self.totsq - self.tot*self.tot/self.N) \
|
|
|
+ / (self.N - 1))
|
|
|
+ return "%f \pm %f" % (mean, stddev)
|
|
|
+ else:
|
|
|
+ return "%f" % mean
|
|
|
|
|
|
def __init__(self, usebw=False):
|
|
|
self.usebw = usebw
|