From e0f491ea8cd35c23152e368fc5247099f9752923 Mon Sep 17 00:00:00 2001
From: Gyubong <jopemachine@naver.com>
Date: Mon, 12 Sep 2022 12:45:56 +0900
Subject: [PATCH] Fix edge case of `math.pow(0.0, -inf)`, `math.pow(-0.0,
 -inf)`

---
 Lib/test/test_math.py | 2 --
 stdlib/src/math.rs    | 2 +-
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py
index 456695ece..582e77f74 100644
--- a/Lib/test/test_math.py
+++ b/Lib/test/test_math.py
@@ -1227,8 +1227,6 @@ class MathTests(unittest.TestCase):
         self.assertTrue(math.isnan(modf_nan[0]))
         self.assertTrue(math.isnan(modf_nan[1]))
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def testPow(self):
         self.assertRaises(TypeError, math.pow)
         self.ftest('pow(0,1)', math.pow(0,1), 0)
diff --git a/stdlib/src/math.rs b/stdlib/src/math.rs
index 6ceb0e491..9d7ce701d 100644
--- a/stdlib/src/math.rs
+++ b/stdlib/src/math.rs
@@ -184,7 +184,7 @@ mod math {
             return Err(vm.new_value_error("math domain error".to_owned()));
         }
 
-        if x == 0.0 && y < 0.0 {
+        if x == 0.0 && y < 0.0 && y != f64::NEG_INFINITY {
             return Err(vm.new_value_error("math domain error".to_owned()));
         }