diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 66559a1..c2d59c1 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -2,3 +2,4 @@ Ossama Hjaji <ossama-hjaji@live.fr>
 Martin Habovštiak <martin.habovstiak@gmail.com>
 Mara Bos <m-ou.se@m-ou.se>
 Siddharth Naithani <siddharthn.099@gmail.com>
+Spencer Witt
diff --git a/src/lib.rs b/src/lib.rs
index 4974fd2..33ebf22 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -160,6 +160,7 @@ fn add_one_test_float() {
     test("000.000", "1.000");
     test("-000.00", "1.00");
     test("-0.9", "0.1");
+    test("-0.76987965465", "0.23012034535");
     test("0123456789.0987654321", "123456790.0987654321");
 }