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diff --git a/code/bspc/l_math.h b/code/bspc/l_math.h
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+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake III Arena source code is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Foobar; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+#ifndef __MATHLIB__
+#define __MATHLIB__
+
+// mathlib.h
+
+#include <math.h>
+
+#ifdef DOUBLEVEC_T
+typedef double vec_t;
+#else
+typedef float vec_t;
+#endif
+typedef vec_t vec3_t[3];
+typedef vec_t vec4_t[4];
+
+#define	SIDE_FRONT		0
+#define	SIDE_ON			2
+#define	SIDE_BACK		1
+#define	SIDE_CROSS		-2
+
+#define PITCH		0
+#define YAW			1
+#define ROLL		2
+
+#define	Q_PI	3.14159265358979323846
+
+#define DEG2RAD( a ) ( a * M_PI ) / 180.0F
+
+#ifndef M_PI
+#define M_PI		3.14159265358979323846	// matches value in gcc v2 math.h
+#endif
+
+extern vec3_t vec3_origin;
+
+#define	EQUAL_EPSILON	0.001
+
+qboolean VectorCompare (vec3_t v1, vec3_t v2);
+
+#define DotProduct(x,y)			(x[0]*y[0]+x[1]*y[1]+x[2]*y[2])
+#define VectorSubtract(a,b,c)	{c[0]=a[0]-b[0];c[1]=a[1]-b[1];c[2]=a[2]-b[2];}
+#define VectorAdd(a,b,c)		{c[0]=a[0]+b[0];c[1]=a[1]+b[1];c[2]=a[2]+b[2];}
+#define VectorCopy(a,b)			{b[0]=a[0];b[1]=a[1];b[2]=a[2];}
+#define Vector4Copy(a,b)		{b[0]=a[0];b[1]=a[1];b[2]=a[2];b[3]=a[3];}
+#define	VectorScale(v, s, o)	((o)[0]=(v)[0]*(s),(o)[1]=(v)[1]*(s),(o)[2]=(v)[2]*(s))
+#define VectorClear(x)			{x[0] = x[1] = x[2] = 0;}
+#define VectorNegate(x, y)		{y[0]=-x[0];y[1]=-x[1];y[2]=-x[2];}
+#define	VectorMA(v, s, b, o)	((o)[0]=(v)[0]+(b)[0]*(s),(o)[1]=(v)[1]+(b)[1]*(s),(o)[2]=(v)[2]+(b)[2]*(s))
+
+vec_t Q_rint (vec_t in);
+vec_t _DotProduct (vec3_t v1, vec3_t v2);
+void _VectorSubtract (vec3_t va, vec3_t vb, vec3_t out);
+void _VectorAdd (vec3_t va, vec3_t vb, vec3_t out);
+void _VectorCopy (vec3_t in, vec3_t out);
+void _VectorScale (vec3_t v, vec_t scale, vec3_t out);
+void _VectorMA(vec3_t va, double scale, vec3_t vb, vec3_t vc);
+
+double VectorLength(vec3_t v);
+void CrossProduct(const vec3_t v1, const vec3_t v2, vec3_t cross);
+vec_t VectorNormalize(vec3_t inout);
+vec_t ColorNormalize(vec3_t in, vec3_t out);
+vec_t VectorNormalize2(const vec3_t v, vec3_t out);
+void VectorInverse (vec3_t v);
+
+void ClearBounds (vec3_t mins, vec3_t maxs);
+void AddPointToBounds (const vec3_t v, vec3_t mins, vec3_t maxs);
+
+void AngleVectors (const vec3_t angles, vec3_t forward, vec3_t right, vec3_t up);
+void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3]);
+void RotatePoint(vec3_t point, float matrix[3][3]);
+void CreateRotationMatrix(vec3_t angles, float matrix[3][3]);
+
+#endif