From 0eeb7ae3cff9d78e98dc5d9fc09bcb98b10986b9 Mon Sep 17 00:00:00 2001
From: Medusa Slockbower <mslockbo@gmail.com>
Date: Wed, 2 Jul 2025 17:57:57 -0400
Subject: [PATCH]  - More performant roundEven

---
 include/fennec/math/common.h | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/include/fennec/math/common.h b/include/fennec/math/common.h
index b118537..f2a99d6 100644
--- a/include/fennec/math/common.h
+++ b/include/fennec/math/common.h
@@ -451,15 +451,23 @@ constexpr vector<genType, i...> trunc(const vector<genType, i...>& x)
 template<typename genType>
 constexpr genType roundEven(genType x)
 {
-	const genType e = numeric_limits<genType>::epsilon();
-	genType f = x - fennec::floor(x);
-	if (fennec::abs(f - genType(0.5)) > e)
+	//const genType e = numeric_limits<genType>::epsilon();
+	//genType f = x - fennec::floor(x);
+	//if (fennec::abs(f - genType(0.5)) > e)
+	//	return fennec::round(x);
+	//
+	//genType i = fennec::floor(x);
+	//genType r = i / 2;
+	//bool up = r - fennec::floor(r) > e;
+	//return i + static_cast<genType>(up);
+	static const genType e = std::numeric_limits<genType>::epsilon();
+	genType i = fennec::floor(x);
+	genType f = x - i;
+	if (abs(f - genType(0.5)) > e)
 		return fennec::round(x);
 
-	genType i = fennec::floor(x);
-	genType r = i / 2;
-	bool up = r - fennec::floor(r) > e;
-	return i + static_cast<genType>(up);
+	bool dir = (static_cast<int>(x) % 2);
+	return dir ? i + 1 : i;
 }
 
 // Vector Specializations ----------------------------------------------------------------------------------------------