From d54f831dd73aa377d43122510b76e2517dd0a622 Mon Sep 17 00:00:00 2001
From: Zachary Slater <zachary@ioquake.org>
Date: Sat, 27 Aug 2005 18:11:08 +0000
Subject: [PATCH] From ludwig: This one fixes a rendering error

---
 code/game/q_math.c      | 12 +++++++-----
 code/qcommon/cm_trace.c | 12 +++++++-----
 2 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/code/game/q_math.c b/code/game/q_math.c
index bb0faf69..53412e18 100755
--- a/code/game/q_math.c
+++ b/code/game/q_math.c
@@ -551,15 +551,17 @@ void VectorRotate( vec3_t in, vec3_t matrix[3], vec3_t out )
 */
 float Q_rsqrt( float number )
 {
-	long i;
+	union {
+		float f;
+		int i;
+	} t;
 	float x2, y;
 	const float threehalfs = 1.5F;
 
 	x2 = number * 0.5F;
-	y  = number;
-	i  = * ( long * ) &y;						// evil floating point bit level hacking
-	i  = 0x5f3759df - ( i >> 1 );               // what the fuck?
-	y  = * ( float * ) &i;
+	t.f  = number;
+	t.i  = 0x5f3759df - ( t.i >> 1 );               // what the fuck?
+	y  = t.f;
 	y  = y * ( threehalfs - ( x2 * y * y ) );   // 1st iteration
 //	y  = y * ( threehalfs - ( x2 * y * y ) );   // 2nd iteration, this can be removed
 
diff --git a/code/qcommon/cm_trace.c b/code/qcommon/cm_trace.c
index 6eb99313..eb9b14fa 100755
--- a/code/qcommon/cm_trace.c
+++ b/code/qcommon/cm_trace.c
@@ -131,15 +131,17 @@ SquareRootFloat
 ================
 */
 float SquareRootFloat(float number) {
-	long i;
+	union {
+		float f;
+		int i;
+	} t;
 	float x, y;
 	const float f = 1.5F;
 
 	x = number * 0.5F;
-	y  = number;
-	i  = * ( long * ) &y;
-	i  = 0x5f3759df - ( i >> 1 );
-	y  = * ( float * ) &i;
+	t.f  = number;
+	t.i  = 0x5f3759df - ( t.i >> 1 );
+	y  = t.f;
 	y  = y * ( f - ( x * y * y ) );
 	y  = y * ( f - ( x * y * y ) );
 	return number * y;