1 files changed, 23 insertions, 0 deletions
diff --git a/tests/micropython/const_float.py b/tests/micropython/const_float.py
new file mode 100644
index 000000000..c3a0df027
--- /dev/null
+++ b/tests/micropython/const_float.py
@@ -0,0 +1,23 @@
+# test constant optimisation, with consts that are floats
+
+from micropython import const
+
+# check we can make consts from floats
+F1 = const(2.5)
+F2 = const(-0.3)
+print(type(F1), F1)
+print(type(F2), F2)
+
+# check arithmetic with floats
+F3 = const(F1 + F2)
+F4 = const(F1**2)
+print(F3, F4)
+
+# check int operations with float results
+F5 = const(1 / 2)
+F6 = const(2**-2)
+print(F5, F6)
+
+# note: we also test float expression folding when
+#       we're compiling test cases in tests/float, as
+#       many expressions are resolved at compile time.