1 files changed, 27 insertions, 0 deletions
diff --git a/tests/float/float_divmod_relaxed.py b/tests/float/float_divmod_relaxed.py
new file mode 100644
index 0000000000..7054d2ca67
--- /dev/null
+++ b/tests/float/float_divmod_relaxed.py
@@ -0,0 +1,27 @@
+# test floating point floor divide and modulus
+# it has some tricky corner cases
+
+# pyboard has 32-bit floating point and gives different (but still
+# correct) answers for certain combinations of divmod arguments.
+
+def test(x, y):
+    div, mod = divmod(x, y)
+    print(div == x // y, mod == x % y, abs(div * y + mod - x) < 1e-6)
+
+test(1.23456, 0.7)
+test(-1.23456, 0.7)
+test(1.23456, -0.7)
+test(-1.23456, -0.7)
+
+a = 1.23456
+b = 0.7
+test(a, b)
+test(a, -b)
+test(-a, b)
+test(-a, -b)
+
+for i in range(25):
+    x = (i - 12.5) / 6
+    for j in range(25):
+        y = (j - 12.5) / 6
+        test(x, y)