From f9ea8b97f9b9853d0db8086734a67853b90882ae Mon Sep 17 00:00:00 2001
From: Henry Schimke <henry@azule.info>
Date: Thu, 13 Oct 2022 18:30:43 -0500
Subject: [PATCH] a tiny bit more precision, still fails on 90 degree rotation

---
 src/qrcode/detector/finder_pattern_finder.rs | 26 ++++++++++----------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/src/qrcode/detector/finder_pattern_finder.rs b/src/qrcode/detector/finder_pattern_finder.rs
index 0fd8fb3..f99c4b1 100755
--- a/src/qrcode/detector/finder_pattern_finder.rs
+++ b/src/qrcode/detector/finder_pattern_finder.rs
@@ -210,14 +210,14 @@ impl FinderPatternFinder {
         if totalModuleSize < 7 {
             return false;
         }
-        let moduleSize = totalModuleSize as f32 / 7.0;
-        let maxVariance = moduleSize as f32 / 2.0;
+        let moduleSize = totalModuleSize as f64 / 7.0;
+        let maxVariance = moduleSize as f64 / 2.0;
         // Allow less than 50% variance from 1-1-3-1-1 proportions
-        return ((moduleSize - stateCount[0] as f32).abs()) < maxVariance
-            && ((moduleSize - stateCount[1] as f32).abs()) < maxVariance
-            && ((3.0 * moduleSize - stateCount[2] as f32).abs()) < 3.0 * maxVariance
-            && (moduleSize - stateCount[3] as f32).abs() < maxVariance
-            && (moduleSize - stateCount[4] as f32).abs() < maxVariance;
+        return ((moduleSize - stateCount[0] as f64).abs()) < maxVariance
+            && ((moduleSize - stateCount[1] as f64).abs()) < maxVariance
+            && ((3.0 * moduleSize - stateCount[2] as f64).abs()) < 3.0 * maxVariance
+            && (moduleSize - stateCount[3] as f64).abs() < maxVariance
+            && (moduleSize - stateCount[4] as f64).abs() < maxVariance;
     }
 
     /**
@@ -238,14 +238,14 @@ impl FinderPatternFinder {
         if totalModuleSize < 7 {
             return false;
         }
-        let moduleSize = totalModuleSize as f32 / 7.0;
+        let moduleSize = totalModuleSize as f64 / 7.0;
         let maxVariance = moduleSize / 1.333;
         // Allow less than 75% variance from 1-1-3-1-1 proportions
-        return (moduleSize - stateCount[0] as f32).abs() < maxVariance
-            && (moduleSize - stateCount[1] as f32).abs() < maxVariance
-            && (3.0 * moduleSize - stateCount[2] as f32).abs() < 3.0 * maxVariance
-            && (moduleSize - stateCount[3] as f32).abs() < maxVariance
-            && (moduleSize - stateCount[4] as f32).abs() < maxVariance;
+        return (moduleSize - stateCount[0] as f64).abs() < maxVariance
+            && (moduleSize - stateCount[1] as f64).abs() < maxVariance
+            && (3.0 * moduleSize - stateCount[2] as f64).abs() < 3.0 * maxVariance
+            && (moduleSize - stateCount[3] as f64).abs() < maxVariance
+            && (moduleSize - stateCount[4] as f64).abs() < maxVariance;
     }
 
     fn getCrossCheckStateCount(&mut self) -> &[u32; 5] {