From 223790941cda4e192faec14b00b81c1cf1a1e442 Mon Sep 17 00:00:00 2001
From: Quinn <quinnthepigeon@proton.me>
Date: Mon, 10 Mar 2025 13:01:38 +0100
Subject: [PATCH] small optimisation to normalisation function

---
 src/util/vec/float2.h | 4 ++--
 src/util/vec/float3.h | 4 ++--
 src/util/vec/float4.h | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/util/vec/float2.h b/src/util/vec/float2.h
index f9cd318..58822fb 100644
--- a/src/util/vec/float2.h
+++ b/src/util/vec/float2.h
@@ -45,8 +45,8 @@ static inline float float2_mag(float2 v) {
 
 // normalizes the float2
 static inline float2 float2_norm(float2 v) {
-    float len = float2_mag(v);
-    return float2_div(v, len);
+    float s = 1.0F / float2_mag(v); // get the scaling factor
+    return float2_scale(v, s);      // scale the vector by the scaling factor (slightly more efficient than dividing)
 }
 
 // gets the dot product of two float2s
diff --git a/src/util/vec/float3.h b/src/util/vec/float3.h
index 2758339..9f9a00f 100644
--- a/src/util/vec/float3.h
+++ b/src/util/vec/float3.h
@@ -46,8 +46,8 @@ static inline float float3_mag(float3 v) {
 
 // normalizes the float3
 static inline float3 float3_norm(float3 v) {
-    float len = float3_mag(v);
-    return float3_div(v, len);
+    float s = 1.0F / float3_mag(v); // get the scaling factor
+    return float3_scale(v, s);      // scale the vector by the scaling factor (slightly more efficient than dividing)
 }
 
 // gets the dot product of two float3s
diff --git a/src/util/vec/float4.h b/src/util/vec/float4.h
index d89435b..92a7794 100644
--- a/src/util/vec/float4.h
+++ b/src/util/vec/float4.h
@@ -47,8 +47,8 @@ static inline float float4_mag(float4 v) {
 
 // normalizes the float4
 static inline float4 float4_norm(float4 v) {
-    float len = float4_mag(v);
-    return float4_div(v, len);
+    float s = 1.0F / float4_mag(v); // get the scaling factor
+    return float4_scale(v, s);      // scale the vector by the scaling factor (slightly more efficient than dividing)
 }
 
 // gets the dot product of two float4s