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-rw-r--r--lib/stdlib/src/math.erl6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/stdlib/src/math.erl b/lib/stdlib/src/math.erl
index c3fb684ec3..98a70b1644 100644
--- a/lib/stdlib/src/math.erl
+++ b/lib/stdlib/src/math.erl
@@ -51,9 +51,9 @@ asinh(_) ->
atan(_) ->
erlang:nif_error(undef).
--spec atan2(X, Y) -> float() when
- X :: number(),
- Y :: number().
+-spec atan2(Y, X) -> float() when
+ Y :: number(),
+ X :: number().
atan2(_, _) ->
erlang:nif_error(undef).