RustPython
diff --git a/‎Lib/test/test_math.py‎
Lines changed: 16 additions & 0 deletions b/‎Lib/test/test_math.py‎
Lines changed: 16 additions & 0 deletions
diff --git a/‎stdlib/src/math.rs‎
Lines changed: 6 additions & 0 deletions b/‎stdlib/src/math.rs‎
Lines changed: 6 additions & 0 deletions
@@ -377,6 +377,22 @@ def testAtan2(self):
         self.assertTrue(math.isnan(math.atan2(NAN, INF)))
         self.assertTrue(math.isnan(math.atan2(NAN, NAN)))
 
+    def testCbrt(self):
+        self.assertRaises(TypeError, math.cbrt)
+        self.ftest('cbrt(0)', math.cbrt(0), 0)
+        self.ftest('cbrt(1)', math.cbrt(1), 1)
+        self.ftest('cbrt(8)', math.cbrt(8), 2)
+        self.ftest('cbrt(0.0)', math.cbrt(0.0), 0.0)
+        self.ftest('cbrt(-0.0)', math.cbrt(-0.0), -0.0)
+        self.ftest('cbrt(1.2)', math.cbrt(1.2), 1.062658569182611)
+        self.ftest('cbrt(-2.6)', math.cbrt(-2.6), -1.375068867074141)
+        self.ftest('cbrt(27)', math.cbrt(27), 3)
+        self.ftest('cbrt(-1)', math.cbrt(-1), -1)
+        self.ftest('cbrt(-27)', math.cbrt(-27), -3)
+        self.assertEqual(math.cbrt(INF), INF)
+        self.assertEqual(math.cbrt(NINF), NINF)
+        self.assertTrue(math.isnan(math.cbrt(NAN)))
+
     def testCeil(self):
         self.assertRaises(TypeError, math.ceil)
         self.assertEqual(int, type(math.ceil(0.5)))
 
@@ -10,6 +10,7 @@ mod math {
     use num_bigint::BigInt;
     use num_traits::{One, Signed, Zero};
     use rustpython_common::float_ops;
+    use rustpython_vm::protocol::PyNumber;
     use std::cmp::Ordering;
 
     // Constants
@@ -536,6 +537,11 @@ mod math {
         math_perf_arb_len_int_op(args, |x, y| x.lcm(y.as_bigint()), BigInt::one())
     }
 
+    #[pyfunction]
+    fn cbrt(x: ArgIntoFloat) -> f64 {
+        x.cbrt()
+    }
+
     #[pyfunction]
     fn fsum(seq: ArgIterable<ArgIntoFloat>, vm: &VirtualMachine) -> PyResult<f64> {
         let mut partials = vec![];