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-rw-r--r--python/analytics/index.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/python/analytics/index.py b/python/analytics/index.py
index 0aeda859..ddb77abf 100644
--- a/python/analytics/index.py
+++ b/python/analytics/index.py
@@ -115,7 +115,7 @@ class Index(object):
def flat_hazard(self):
sc_data = self._sc.inspect()['data']
## conversion to continuous compounding
- return math.log(1 + sc_data[0][1])
+ return math.log1p(sc_data[0][1])
@property
def pv(self):