3 files changed, 42 insertions, 0 deletions
diff --git a/tests/float/cmath_dunder.py b/tests/float/cmath_dunder.py
new file mode 100644
index 000000000..352634151
--- /dev/null
+++ b/tests/float/cmath_dunder.py
@@ -0,0 +1,21 @@
+# test that cmath functions support user classes with __float__ and __complex__
+
+try:
+    import cmath
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+
+class TestFloat:
+    def __float__(self):
+        return 1.0
+
+
+class TestComplex:
+    def __complex__(self):
+        return 1j + 10
+
+
+for clas in TestFloat, TestComplex:
+    print("%.5g" % cmath.phase(clas()))
diff --git a/tests/float/complex_dunder.py b/tests/float/complex_dunder.py
index 128dc6929..975d829b4 100644
--- a/tests/float/complex_dunder.py
+++ b/tests/float/complex_dunder.py
@@ -1,6 +1,11 @@
 # test __complex__ function support
 
 
+class TestFloat:
+    def __float__(self):
+        return 1.0
+
+
 class TestComplex:
     def __complex__(self):
         return 1j + 10
@@ -20,6 +25,7 @@ class Test:
     pass
 
 
+print(complex(TestFloat()))
 print(complex(TestComplex()))
 
 try:
diff --git a/tests/float/math_dunder.py b/tests/float/math_dunder.py
new file mode 100644
index 000000000..33ea7f7c1
--- /dev/null
+++ b/tests/float/math_dunder.py
@@ -0,0 +1,15 @@
+# test that math functions support user classes with __float__
+
+try:
+    import math
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+
+class TestFloat:
+    def __float__(self):
+        return 1.0
+
+
+print("%.5g" % math.exp(TestFloat()))