diff --git a/source/cmd.c b/source/cmd.c
index 783475f..a4f2c4f 100644
--- a/source/cmd.c
+++ b/source/cmd.c
@@ -684,7 +684,7 @@ void	Cmd_AddCommand (const char *cmd_name, xcommand_t function)
 // fail if the command already exists
 	for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
 	{
-		if (!Q_strcmp (cmd_name, cmd->name))
+		if (!strcmp (cmd_name, cmd->name))
 		{
 			Con_Printf ("Cmd_AddCommand: %s already defined\n", cmd_name);
 			return;
@@ -727,7 +727,7 @@ qboolean	Cmd_Exists (const char *cmd_name)
 
 	for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
 	{
-		if (!Q_strcmp (cmd_name,cmd->name))
+		if (!strcmp (cmd_name,cmd->name))
 			return true;
 	}
 
diff --git a/source/common.c b/source/common.c
index 6df6d4d..94d2d02 100644
--- a/source/common.c
+++ b/source/common.c
@@ -1244,7 +1244,7 @@ int COM_CheckParm (const char *parm)
 	{
 		if (!com_argv[i])
 			continue;		// NEXTSTEP sometimes clears appkit vars.
-		if (!Q_strcmp (parm,com_argv[i]))
+		if (!strcmp (parm,com_argv[i]))
 			return i;
 	}
 
@@ -1303,7 +1303,7 @@ void COM_InitArgv (int argc, char **argv)
 	for (com_argc = 0; (com_argc < MAX_NUM_ARGVS) && (com_argc < argc); com_argc++)
 	{
 		largv[com_argc] = argv[com_argc];
-		if (!Q_strcmp ("-safe", argv[com_argc]))
+		if (!strcmp ("-safe", argv[com_argc]))
 			safemode = 1;
 	}
 
diff --git a/source/console.c b/source/console.c
index 591ec7c..656540e 100644
--- a/source/console.c
+++ b/source/console.c
@@ -1030,7 +1030,7 @@ void Con_TabComplete (void)
 		match = keydown[K_SHIFT] ? t->prev->name : t->name;
 		do
 		{
-			if (!Q_strcmp(t->name, partial))
+			if (!strcmp(t->name, partial))
 			{
 				match = keydown[K_SHIFT] ? t->prev->name : t->next->name;
 				break;
diff --git a/source/cvar.c b/source/cvar.c
index aaa8089..9fb4b7c 100644
--- a/source/cvar.c
+++ b/source/cvar.c
@@ -251,7 +251,7 @@ cvar_t *Cvar_FindVar (const char *var_name)
 
 	for (var = cvar_vars ; var ; var = var->next)
 	{
-		if (!Q_strcmp(var_name, var->name))
+		if (!strcmp(var_name, var->name))
 			return var;
 	}
 
diff --git a/source/gl_texmgr.c b/source/gl_texmgr.c
index 050901d..e630911 100644
--- a/source/gl_texmgr.c
+++ b/source/gl_texmgr.c
@@ -138,7 +138,7 @@ static void TexMgr_TextureMode_f (cvar_t *var)
 
 	for (i = 0; i < NUM_GLMODES; i++)
 	{
-		if (!Q_strcmp (glmodes[i].name, gl_texturemode.string))
+		if (!strcmp (glmodes[i].name, gl_texturemode.string))
 		{
 			if (glmode_idx != i)
 			{
diff --git a/source/host_cmd.c b/source/host_cmd.c
index 94c6b2e..0953f80 100644
--- a/source/host_cmd.c
+++ b/source/host_cmd.c
@@ -67,7 +67,7 @@ void FileList_Add (const char *name, filelist_item_t **list)
 	// ignore duplicate
 	for (item = *list; item; item = item->next)
 	{
-		if (!Q_strcmp (name, item->name))
+		if (!strcmp (name, item->name))
 			return;
 	}
 
@@ -1286,7 +1286,7 @@ void Host_Name_f (void)
 
 	if (cmd_source == src_command)
 	{
-		if (Q_strcmp(cl_name.string, newName) == 0)
+		if (strcmp(cl_name.string, newName) == 0)
 			return;
 		Cvar_Set ("_cl_name", newName);
 		if (cls.state == ca_connected)
@@ -1296,7 +1296,7 @@ void Host_Name_f (void)
 
 	if (host_client->name[0] && strcmp(host_client->name, "unconnected") )
 	{
-		if (Q_strcmp(host_client->name, newName) != 0)
+		if (strcmp(host_client->name, newName) != 0)
 			Con_Printf ("%s renamed to %s\n", host_client->name, newName);
 	}
 	Q_strcpy (host_client->name, newName);
@@ -1778,7 +1778,7 @@ void Host_Kick_f (void)
 
 	save = host_client;
 
-	if (Cmd_Argc() > 2 && Q_strcmp(Cmd_Argv(1), "#") == 0)
+	if (Cmd_Argc() > 2 && strcmp(Cmd_Argv(1), "#") == 0)
 	{
 		i = Q_atof(Cmd_Argv(2)) - 1;
 		if (i < 0 || i >= svs.maxclients)
diff --git a/source/mathlib.c b/source/mathlib.c
index 7928baa..300e526 100644
--- a/source/mathlib.c
+++ b/source/mathlib.c
@@ -32,6 +32,23 @@ float _mathlib_temp_float1, _mathlib_temp_float2, _mathlib_temp_float3;
 //#define DEG2RAD( a ) ( a * M_PI ) / 180.0F
 #define DEG2RAD( a ) ( (a) * M_PI_DIV_180 ) //johnfitz
 
+float rsqrt( float number )
+{
+	int	i;
+	float	x, y;
+
+	if( number == 0.0f )
+		return 0.0f;
+
+	x = number * 0.5f;
+	i = *(int *)&number;	// evil floating point bit level hacking
+	i = 0x5f3759df - (i >> 1);	// what the fuck?
+	y = *(float *)&i;
+	y = y * (1.5f - (x * y * y));	// first iteration
+
+	return y;
+}
+
 void SinCos( float radians, float *sine, float *cosine )
 {
     *sine = sin(radians);
@@ -335,20 +352,18 @@ vec_t Length(vec3_t v)
 
 float VectorNormalize (vec3_t v)
 {
-	float	length, ilength;
+	float	ilength;
 
-	length = sqrt(DotProduct(v,v));
+	ilength = rsqrt(DotProduct(v,v));
 
-	if (length)
+	if (ilength)
 	{
-		ilength = 1/length;
 		v[0] *= ilength;
 		v[1] *= ilength;
 		v[2] *= ilength;
 	}
 
-	return length;
-
+	return ilength;
 }
 
 void VectorInverse (vec3_t v)
diff --git a/source/menu.c b/source/menu.c
index ea95449..458ad35 100644
--- a/source/menu.c
+++ b/source/menu.c
@@ -2055,9 +2055,9 @@ forward:
 			goto forward;
 
 		// setup_cursor == 4 (OK)
-		if (Q_strcmp(cl_name.string, setup_myname) != 0)
+		if (strcmp(cl_name.string, setup_myname) != 0)
 			Cbuf_AddText ( va ("name \"%s\"\n", setup_myname) );
-		if (Q_strcmp(hostname.string, setup_hostname) != 0)
+		if (strcmp(hostname.string, setup_hostname) != 0)
 			Cvar_Set("hostname", setup_hostname);
 		if (setup_top != setup_oldtop || setup_bottom != setup_oldbottom)
 			Cbuf_AddText( va ("color %i %i\n", setup_top, setup_bottom) );
diff --git a/source/net_dgrm.c b/source/net_dgrm.c
index 93287bb..c448814 100644
--- a/source/net_dgrm.c
+++ b/source/net_dgrm.c
@@ -458,7 +458,7 @@ static void NET_Stats_f (void)
 		Con_Printf("shortPacketCount           = %i\n", shortPacketCount);
 		Con_Printf("droppedDatagrams           = %i\n", droppedDatagrams);
 	}
-	else if (Q_strcmp(Cmd_Argv(1), "*") == 0)
+	else if (strcmp(Cmd_Argv(1), "*") == 0)
 	{
 		for (s = net_activeSockets; s; s = s->next)
 			PrintStats(s);
@@ -891,7 +891,7 @@ static qsocket_t *_Datagram_CheckNewConnections (void)
 	command = MSG_ReadByte();
 	if (command == CCREQ_SERVER_INFO)
 	{
-		if (Q_strcmp(MSG_ReadString(), "QUAKE") != 0)
+		if (strcmp(MSG_ReadString(), "QUAKE") != 0)
 			return NULL;
 
 		SZ_Clear(&net_message);
@@ -980,7 +980,7 @@ static qsocket_t *_Datagram_CheckNewConnections (void)
 	if (command != CCREQ_CONNECT)
 		return NULL;
 
-	if (Q_strcmp(MSG_ReadString(), "QUAKE") != 0)
+	if (strcmp(MSG_ReadString(), "QUAKE") != 0)
 		return NULL;
 
 	if (MSG_ReadByte() != NET_PROTOCOL_VERSION)
diff --git a/source/net_loop.c b/source/net_loop.c
index 8cb22db..bcd385d 100644
--- a/source/net_loop.c
+++ b/source/net_loop.c
@@ -54,7 +54,7 @@ void Loop_SearchForHosts (qboolean xmit)
 		return;
 
 	hostCacheCount = 1;
-	if (Q_strcmp(hostname.string, "UNNAMED") == 0)
+	if (strcmp(hostname.string, "UNNAMED") == 0)
 		Q_strcpy(hostcache[0].name, "local");
 	else
 		Q_strcpy(hostcache[0].name, hostname.string);
@@ -68,7 +68,7 @@ void Loop_SearchForHosts (qboolean xmit)
 
 qsocket_t *Loop_Connect (const char *host)
 {
-	if (Q_strcmp(host,"local") != 0)
+	if (strcmp(host,"local") != 0)
 		return NULL;
 
 	localconnectpending = true;
diff --git a/source/pr_cmds.c b/source/pr_cmds.c
index 903dfaa..604dbb1 100644
--- a/source/pr_cmds.c
+++ b/source/pr_cmds.c
@@ -1158,6 +1158,7 @@ static void PF_findradius (void)
 
 	org = G_VECTOR(OFS_PARM0);
 	rad = G_FLOAT(OFS_PARM1);
+	rad *= rad;
 
 	ent = NEXT_EDICT(sv.edicts);
 	for (i = 1; i < sv.num_edicts; i++, ent = NEXT_EDICT(ent))
@@ -1168,7 +1169,8 @@ static void PF_findradius (void)
 			continue;
 		for (j = 0; j < 3; j++)
 			eorg[j] = org[j] - (ent->v.origin[j] + (ent->v.mins[j] + ent->v.maxs[j]) * 0.5);
-		if (VectorLength(eorg) > rad)
+		
+		if (DotProduct(eorg, eorg) > rad)
 			continue;
 
 		ent->v.chain = EDICT_TO_PROG(chain);
diff --git a/source/snd_dma.c b/source/snd_dma.c
index ac912c9..0d2f1b7 100644
--- a/source/snd_dma.c
+++ b/source/snd_dma.c
@@ -278,7 +278,7 @@ static sfx_t *S_FindName (const char *name)
 // see if already loaded
 	for (i = 0; i < num_sfx; i++)
 	{
-		if (!Q_strcmp(known_sfx[i].name, name))
+		if (!strcmp(known_sfx[i].name, name))
 		{
 			return &known_sfx[i];
 		}
diff --git a/source/sv_main.c b/source/sv_main.c
index 5148e9f..09f98ae 100644
--- a/source/sv_main.c
+++ b/source/sv_main.c
@@ -1004,7 +1004,7 @@ qboolean SV_SendClientDatagram (client_t *client)
 	msg.cursize = 0;
 
 	//johnfitz -- if client is nonlocal, use smaller max size so packets aren't fragmented
-	if (Q_strcmp(NET_QSocketGetAddressString(client->netconnection), "LOCAL") != 0)
+	if (strcmp(NET_QSocketGetAddressString(client->netconnection), "LOCAL") != 0)
 		msg.maxsize = DATAGRAM_MTU;
 	//johnfitz