From 61ed85b032b30028b8c1a2fd76905df2982f6db5 Mon Sep 17 00:00:00 2001
From: Ian Clester <ijc@ijc8.me>
Date: Sat, 10 Sep 2022 12:52:21 -0400
Subject: [PATCH] Fix formatting of fixnums in the range (-1, 0)

---
 agb-fixnum/src/lib.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/agb-fixnum/src/lib.rs b/agb-fixnum/src/lib.rs
index 47036f28..355b6007 100644
--- a/agb-fixnum/src/lib.rs
+++ b/agb-fixnum/src/lib.rs
@@ -537,6 +537,11 @@ impl<I: FixedWidthUnsignedInteger, const N: usize> Display for Num<I, N> {
         // So we have to add 1 to the integral bit, and take 1 - fractional bit
         if fractional != I::zero() && integral < I::zero() {
             integral = integral + I::one();
+            if integral == I::zero() {
+                // If the number is in the range (-1, 0), then we just bumped `integral` from -1 to 0,
+                // so we need to compensate for the missing negative sign.
+                write!(f, "-")?;
+            }
             fractional = (I::one() << N) - fractional;
         }