diff --git a/Cargo.toml b/Cargo.toml
index c0bd473..e494e0e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,4 +1,4 @@
-# Copyright © 2018–2019 Trevor Spiteri
+# Copyright © 2018–2020 Trevor Spiteri
 
 # Copying and distribution of this file, with or without modification,
 # are permitted in any medium without royalty provided the copyright
diff --git a/LICENSE-MIT b/LICENSE-MIT
index 2016e08..248c946 100644
--- a/LICENSE-MIT
+++ b/LICENSE-MIT
@@ -1,4 +1,4 @@
-Copyright © 2018–2019 Trevor Spiteri
+Copyright © 2018–2020 Trevor Spiteri
 
 Permission is hereby granted, free of charge, to any
 person obtaining a copy of this software and associated
diff --git a/README.md b/README.md
index 510a3e5..d91ce39 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-<!-- Copyright © 2018–2019 Trevor Spiteri -->
+<!-- Copyright © 2018–2020 Trevor Spiteri -->
 
 <!-- Copying and distribution of this file, with or without
 modification, are permitted in any medium without royalty provided the
diff --git a/RELEASES.md b/RELEASES.md
index b752f31..8abe767 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -1,4 +1,4 @@
-<!-- Copyright © 2018–2019 Trevor Spiteri -->
+<!-- Copyright © 2018–2020 Trevor Spiteri -->
 
 <!-- Copying and distribution of this file, with or without
 modification, are permitted in any medium without royalty provided the
diff --git a/build.rs b/build.rs
index c8fc66e..fe001bd 100644
--- a/build.rs
+++ b/build.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // Copying and distribution of this file, with or without
 // modification, are permitted in any medium without royalty provided
diff --git a/src/arith.rs b/src/arith.rs
index 0ec3e33..b3021d0 100644
--- a/src/arith.rs
+++ b/src/arith.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/cast.rs b/src/cast.rs
index e1cf7a2..ef47fea 100644
--- a/src/cast.rs
+++ b/src/cast.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/cmp.rs b/src/cmp.rs
index 652cde6..954048f 100644
--- a/src/cmp.rs
+++ b/src/cmp.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/consts.rs b/src/consts.rs
index 5947fe1..46bd968 100644
--- a/src/consts.rs
+++ b/src/consts.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/convert.rs b/src/convert.rs
index f0def89..474409e 100644
--- a/src/convert.rs
+++ b/src/convert.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/display.rs b/src/display.rs
index af444cf..7ecfec8 100644
--- a/src/display.rs
+++ b/src/display.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/float_helper.rs b/src/float_helper.rs
index 2226a88..051d825 100644
--- a/src/float_helper.rs
+++ b/src/float_helper.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/from_str.rs b/src/from_str.rs
index 3b20a64..74e203f 100644
--- a/src/from_str.rs
+++ b/src/from_str.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/helpers.rs b/src/helpers.rs
index 577583b..98e35e2 100644
--- a/src/helpers.rs
+++ b/src/helpers.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/int_helper.rs b/src/int_helper.rs
index 6a0fe11..277bdea 100644
--- a/src/int_helper.rs
+++ b/src/int_helper.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/lib.rs b/src/lib.rs
index 491301d..3711a03 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/log10.rs b/src/log10.rs
index 7f97ad1..46b8690 100644
--- a/src/log10.rs
+++ b/src/log10.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
@@ -277,7 +277,7 @@ mod tests {
     use super::IntFracLog10;
 
     macro_rules! check_loop {
-        ($T:ty, $max:expr, $min:expr) => {
+        ($T:ty, $max:expr) => {
             assert_eq!(<$T>::max_value().int_part_log10(), $max);
             for i in 0..=$max {
                 let p = (10 as $T).pow(i as u32);
@@ -288,8 +288,8 @@ mod tests {
                 assert_eq!((p + 1).int_part_log10(), i);
             }
 
-            assert_eq!((1 as $T).frac_part_log10(), $min);
-            for i in 0..-$min {
+            assert_eq!((1 as $T).frac_part_log10(), -1 - $max);
+            for i in 0..=$max {
                 let p = <$T>::max_value() / (10 as $T).pow(i as u32);
                 if p > 1 {
                     assert_eq!((p - 1).frac_part_log10(), -1 - i);
@@ -304,26 +304,26 @@ mod tests {
 
     #[test]
     fn log10_u8() {
-        check_loop! { u8, 2, -3 }
+        check_loop! { u8, 2 }
     }
 
     #[test]
     fn log10_u16() {
-        check_loop! { u16, 4, -5 }
+        check_loop! { u16, 4 }
     }
 
     #[test]
     fn log10_u32() {
-        check_loop! { u32, 9, -10 }
+        check_loop! { u32, 9 }
     }
 
     #[test]
     fn log10_u64() {
-        check_loop! { u64, 19, -20 }
+        check_loop! { u64, 19 }
     }
 
     #[test]
     fn log10_u128() {
-        check_loop! { u128, 38, -39 }
+        check_loop! { u128, 38 }
     }
 }
diff --git a/src/macros.rs b/src/macros.rs
index e92c05b..8a94ff6 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/macros_frac.rs b/src/macros_frac.rs
index 74e74ab..5c92e70 100644
--- a/src/macros_frac.rs
+++ b/src/macros_frac.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/macros_from_to.rs b/src/macros_from_to.rs
index ad7d1dc..7fe0d22 100644
--- a/src/macros_from_to.rs
+++ b/src/macros_from_to.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/macros_no_frac.rs b/src/macros_no_frac.rs
index 3cf8dc1..9b3b458 100644
--- a/src/macros_no_frac.rs
+++ b/src/macros_no_frac.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/macros_round.rs b/src/macros_round.rs
index a520990..29048c4 100644
--- a/src/macros_round.rs
+++ b/src/macros_round.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/serdeize.rs b/src/serdeize.rs
index cb075b2..e633d0a 100644
--- a/src/serdeize.rs
+++ b/src/serdeize.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/traits.rs b/src/traits.rs
index 7a232ed..4287f65 100644
--- a/src/traits.rs
+++ b/src/traits.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/types/extra.rs b/src/types/extra.rs
index da3e7ee..3b9f5b3 100644
--- a/src/types/extra.rs
+++ b/src/types/extra.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/types/mod.rs b/src/types/mod.rs
index f71e680..4fc7e04 100644
--- a/src/types/mod.rs
+++ b/src/types/mod.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/wide_div.rs b/src/wide_div.rs
index 62cf495..454a8a6 100644
--- a/src/wide_div.rs
+++ b/src/wide_div.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either
diff --git a/src/wrapping.rs b/src/wrapping.rs
index e2673d3..bc78d26 100644
--- a/src/wrapping.rs
+++ b/src/wrapping.rs
@@ -1,4 +1,4 @@
-// Copyright © 2018–2019 Trevor Spiteri
+// Copyright © 2018–2020 Trevor Spiteri
 
 // This library is free software: you can redistribute it and/or
 // modify it under the terms of either