From 4340601e1c2f604161a3830de98fe7ce5ae8ff05 Mon Sep 17 00:00:00 2001
From: sebseb7 <github@seb.exse.net>
Date: Thu, 13 Dec 2012 14:26:53 +0100
Subject: [PATCH] better fast inv sqrt

---
 fastsqrt_version2 | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 fastsqrt_version2

diff --git a/fastsqrt_version2 b/fastsqrt_version2
new file mode 100644
index 0000000..054fb34
--- /dev/null
+++ b/fastsqrt_version2
@@ -0,0 +1,5 @@
+float InvSqrt(float x){
+	uint32_t i = 0x5F1F1412 - (*(uint32_t*)&x >> 1);
+	float tmp = *(float*)&i;
+	return tmp * (1.69000231f - 0.714158168f * x * tmp * tmp);
+}