From 85e38a358d1d22e1eddb70170d3f4927661cd704 Mon Sep 17 00:00:00 2001
From: Simon Bruder <simon.bruder@mailbox.tu-dresden.de>
Date: Wed, 10 May 2023 20:47:08 +0200
Subject: [PATCH] u02/tests: Use floats for r/d in circle prop test
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It does not improve the test’s accuracy, but it seems weird to first
convert the radius to an int and then save the distance as a double.
---
 u02/src/tests.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/u02/src/tests.cpp b/u02/src/tests.cpp
index 97862b7..2fc9cd0 100644
--- a/u02/src/tests.cpp
+++ b/u02/src/tests.cpp
@@ -352,7 +352,7 @@ TEST_CASE("Bresenham circle (prop: √(x²+y²)-r<ε)") {
     SKIP("All coordinates have extreme value, skipping (avoid rounding error)");
   }
 
-  const int r =
+  const float r =
       round(std::sqrt(std::pow((x1 - x0), 2) + std::pow((y1 - y0), 2)));
 
   canvas_buffer *canvas = new canvas_buffer(size, size);
@@ -363,7 +363,7 @@ TEST_CASE("Bresenham circle (prop: √(x²+y²)-r<ε)") {
   bool pass = true;
   for (int x = 0; x < size; x++) {
     for (int y = 0; y < size; y++) {
-      double distance =
+      float distance =
           std::abs(std::sqrt(std::pow(x0 - x, 2) + std::pow(y0 - y, 2)) - r);
       // Because of rounding errors, an exact test (for all pixels) is not
       // feasible.