add an example after all

examples/udecimal_simpletest.py

@@ -0,0 +1,22 @@
+# SPDX-FileCopyrightText: 2020 Jeff Epler <https://unpythonic.net>
+#
+# SPDX-License-Identifier: Unlicense
+
+# pylint: disable=wrong-import-position,unused-import
+
+from jepler_udecimal import Decimal as D
+from jepler_udecimal import localcontext
+
+d = D(".1")
+e = D(".2")
+f = D(".3")
+g = D(".4")
+# Prints 0 because all values involved are exact decimals
+print(d + e + f + g - 1)
+
+import jepler_udecimal.utrig
+
+# Approximates pi to 78 decimal places
+with localcontext() as ctx:
+    ctx.prec = 78
+    print(D("1").atan() * 4)