From: Egor Bogatov <egorbo@gmail.com>
Date: Mon, 4 May 2020 21:06:17 +0000 (+0300)
Subject: Optimize Vector4.Lerp (#35525)
X-Git-Tag: submit/tizen/20210909.063632~8204
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2848dbfc4df320ceee4b6279c8f6c943669b3991;p=platform%2Fupstream%2Fdotnet%2Fruntime.git

Optimize Vector4.Lerp (#35525)

* Optimize Vector4.Lerp

* Implement for Vector2 and Vector4

* Rollback Vector3
---

diff --git a/src/libraries/System.Private.CoreLib/src/System/Numerics/Vector2.cs b/src/libraries/System.Private.CoreLib/src/System/Numerics/Vector2.cs
index dc74961..38b5722 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Numerics/Vector2.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Numerics/Vector2.cs
@@ -207,9 +207,7 @@ namespace System.Numerics
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static Vector2 Lerp(Vector2 value1, Vector2 value2, float amount)
         {
-            return new Vector2(
-                value1.X + (value2.X - value1.X) * amount,
-                value1.Y + (value2.Y - value1.Y) * amount);
+            return value1 + (value2 - value1) * amount;
         }
 
         /// <summary>
diff --git a/src/libraries/System.Private.CoreLib/src/System/Numerics/Vector4.cs b/src/libraries/System.Private.CoreLib/src/System/Numerics/Vector4.cs
index 30dd343..45a9f42 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Numerics/Vector4.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Numerics/Vector4.cs
@@ -209,11 +209,7 @@ namespace System.Numerics
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static Vector4 Lerp(Vector4 value1, Vector4 value2, float amount)
         {
-            return new Vector4(
-                value1.X + (value2.X - value1.X) * amount,
-                value1.Y + (value2.Y - value1.Y) * amount,
-                value1.Z + (value2.Z - value1.Z) * amount,
-                value1.W + (value2.W - value1.W) * amount);
+            return value1 + (value2 - value1) * amount;
         }
 
         /// <summary>