Issue #3366: Add expm1 function to math module. Thanks Eric Smith for
testing on Windows.
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py
index 869849e..da687f0 100644
--- a/Lib/test/test_math.py
+++ b/Lib/test/test_math.py
@@ -987,17 +987,16 @@
if math.isnan(expected) and math.isnan(got):
continue
if not math.isnan(expected) and not math.isnan(got):
- # we use different closeness criteria for
- # different functions.
- if fn == 'gamma':
- accuracy_failure = ulps_check(expected, got, 20)
- elif fn == 'lgamma':
+ if fn == 'lgamma':
+ # we use a weaker accuracy test for lgamma;
+ # lgamma only achieves an absolute error of
+ # a few multiples of the machine accuracy, in
+ # general.
accuracy_failure = acc_check(expected, got,
rel_err = 5e-15,
abs_err = 5e-15)
else:
- raise ValueError("don't know how to check accuracy "
- "for this function")
+ accuracy_failure = ulps_check(expected, got, 20)
if accuracy_failure is None:
continue