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-rw-r--r--tests/float/math_domain_special.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/float/math_domain_special.py b/tests/float/math_domain_special.py
index 388920350e..5650c35fec 100644
--- a/tests/float/math_domain_special.py
+++ b/tests/float/math_domain_special.py
@@ -26,7 +26,7 @@ for name, f, args in (
('gamma', math.gamma, (-2, -1, 0, 1)),
('lgamma', math.lgamma, (-2, -1, 0, 1)),
):
- for x in args + (inf, nan):
+ for x in args + (inf, -inf, nan):
try:
ans = f(x)
print('%.4f' % ans)