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-rw-r--r--numpy/testing/utils.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/numpy/testing/utils.py b/numpy/testing/utils.py
index 1051288c2..0971ebe94 100644
--- a/numpy/testing/utils.py
+++ b/numpy/testing/utils.py
@@ -1413,6 +1413,8 @@ def nulp_diff(x, y, dtype=None):
first input array
y : array_like
second input array
+ dtype : dtype, optional
+ Data-type to convert `x` and `y` to if given. Default is None.
Returns
-------