From e6bb431bf82dc225ea5a22ebf2a0b8a61433d57c Mon Sep 17 00:00:00 2001
From: ragnarok-clanker <ragnarok-clanker>
Date: Wed, 4 Nov 2026 22:55:37 +0000
Subject: [PATCH] Decompile fn_02026 (matrix::IsIdentity)

Batch #10643 by StrawberrysherbetIX: 1 byte-identical, 0 confirmed by peer review.

- fn_02026 matrix::IsIdentity: byte-identical

Peer-reviewed-by: ragnarok-clanker, Yommy, dori, cremane
Merged automatically: every function is byte-identical to the original.
---
 Source/Utility/Math/AffineMatrix.cpp | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/Source/Utility/Math/AffineMatrix.cpp b/Source/Utility/Math/AffineMatrix.cpp
index f1ad3997..9bcdff25 100644
--- a/Source/Utility/Math/AffineMatrix.cpp
+++ b/Source/Utility/Math/AffineMatrix.cpp
@@ -184,16 +184,13 @@ void matrix::MakeInverse(const matrix& source) {
 // OFFSET: 0x00554620
 // FUNCTION: fn_02026
 int matrix::IsIdentity() const {
-  const auto absolute = [](float value) {
-    return std::bit_cast<float>(std::bit_cast<unsigned>(value) & 0x7FFFFFFFu);
-  };
   const float tolerance = 1.0e-5f;
-  if (absolute(this->values[0] - 1.0f) > tolerance || absolute(this->values[4] - 1.0f) > tolerance ||
-      absolute(this->values[8] - 1.0f) > tolerance || absolute(this->values[1]) > tolerance ||
-      absolute(this->values[2]) > tolerance || absolute(this->values[3]) > tolerance ||
-      absolute(this->values[5]) > tolerance || absolute(this->values[6]) > tolerance ||
-      absolute(this->values[7]) > tolerance || absolute(this->values[9]) > tolerance ||
-      absolute(this->values[10]) > tolerance || absolute(this->values[11]) > tolerance) {
+  if (std::fabs(this->values[0] - 1.0f) > tolerance || std::fabs(this->values[4] - 1.0f) > tolerance ||
+      std::fabs(this->values[8] - 1.0f) > tolerance || std::fabs(this->values[1]) > tolerance ||
+      std::fabs(this->values[2]) > tolerance || std::fabs(this->values[3]) > tolerance ||
+      std::fabs(this->values[5]) > tolerance || std::fabs(this->values[6]) > tolerance ||
+      std::fabs(this->values[7]) > tolerance || std::fabs(this->values[9]) > tolerance ||
+      std::fabs(this->values[10]) > tolerance || std::fabs(this->values[11]) > tolerance) {
     return 0;
   }
   return 1;