From 81659df32d9c7d2268af1dc6d02401bf04fac15c Mon Sep 17 00:00:00 2001
From: Zakary Strange <zakarystrange@gmail.com>
Date: Sat, 11 Jan 2020 18:56:15 -0800
Subject: [PATCH] SSE HMM_EqualsVec4

---
 HandmadeMath.h | 8 +++++++-
 README.md      | 3 ++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/HandmadeMath.h b/HandmadeMath.h
index e2ba070..c85b5b0 100644
--- a/HandmadeMath.h
+++ b/HandmadeMath.h
@@ -1002,8 +1002,14 @@ COVERAGE(HMM_EqualsVec4, 1)
 HMM_INLINE hmm_bool HMM_EqualsVec4(hmm_vec4 Left, hmm_vec4 Right)
 {
     ASSERT_COVERED(HMM_EqualsVec4);
+    
+    hmm_bool Result;
 
-    hmm_bool Result = (Left.X == Right.X && Left.Y == Right.Y && Left.Z == Right.Z && Left.W == Right.W);
+#if HANDMADE_MATH__USE_SSE
+    Result = _mm_movemask_ps(_mm_cmpeq_ps(Left.InternalElementsSSE, Right.InternalElementsSSE)) == 0xF ? 1 : 0;
+#else
+    Result = (Left.X == Right.X && Left.Y == Right.Y && Left.Z == Right.Z && Left.W == Right.W);
+#endif
 
     return (Result);
 }
diff --git a/README.md b/README.md
index f7b8e22..c9372c7 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,8 @@ To get started, go download [the latest release](https://github.com/HandmadeMath
 
 Version         | Changes        |
 ----------------|----------------|
-**1.10.1** | Removed stdint.h, this doesn't exist on some really old compilers and we didn't really use it anyways. |
+**1.10.2** | Introduced safe floating point comparrision in HMM_EqualsVec2, HMM_EqualsVec3, HMM_EqualsVec4. |
+**1.10.1** | Removed use of stdint.h, this doesn't exist on some really old compilers and we didn't really use it anyways. |
 **1.10.0** | Made HMM_Perspective use vertical FOV instead of horizontal FOV for consistency with other graphics APIs. |
 **1.9.0** | Added SSE versions of quaternion operations. |
 **1.8.0** | Added fast vector normalization routines that use fast inverse square roots.