move the api headers into include/QF and clean up (most of) the resulting mess.

target specific files that I don't build won't compile yet. just put QF/
infront of the offending headers.

Also move ver_check into libqfutils

include/QF/mathlib.h

@@ -0,0 +1,117 @@
+/*
+	mathlib.h
+
+	Vector math library
+
+	Copyright (C) 1996-1997  Id Software, Inc.
+
+	This program 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.
+
+	This program 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 this program; if not, write to:
+
+		Free Software Foundation, Inc.
+		59 Temple Place - Suite 330
+		Boston, MA  02111-1307, USA
+
+	$Id$
+*/
+
+#ifndef __mathlib_h
+#define __mathlib_h
+
+#include <math.h>
+#include "qtypes.h"
+
+#ifndef M_PI
+# define M_PI	    3.14159265358979323846  // matches value in gcc v2 math.h
+#endif
+
+struct mplane_s;
+
+extern vec3_t vec3_origin;
+extern  int nanmask;
+
+#define IS_NAN(x) (((*(int *)&x)&nanmask)==nanmask)
+
+#define DotProduct(a,b) ((a)[0]*(b)[0]+(a)[1]*(b)[1]+(a)[2]*(b)[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];}
+
+/*
+ * VectorDistance, the distance between two points.
+ * Yes, this is the same as sqrt(VectorSubtract then DotProduct), 
+ * however that way would involve more vars, this is cheaper.
+ */
+#define VectorDistance_fast(a, b)	((((a)[0] - (b)[0]) * ((a)[0] - (b)[0])) + \
+									 (((a)[1] - (b)[1]) * ((a)[1] - (b)[1])) + \
+									 (((a)[2] - (b)[2]) * ((a)[2] - (b)[2])))
+#define VectorDistance(a, b)	sqrt(VectorDistance_fast(a, b))
+
+
+#define lhrandom(MIN,MAX) ((rand() & 32767) * (((MAX)-(MIN)) * (1.0f / 32767.0f)) + (MIN))
+
+// up / down
+#define	PITCH	0
+// left / right
+#define	YAW		1
+// fall over
+#define	ROLL	2
+
+void VectorMA (vec3_t veca, float scale, vec3_t vecb, vec3_t vecc);
+
+vec_t _DotProduct (vec3_t v1, vec3_t v2);
+void _VectorSubtract (vec3_t veca, vec3_t vecb, vec3_t out);
+void _VectorAdd (vec3_t veca, vec3_t vecb, vec3_t out);
+void _VectorCopy (vec3_t in, vec3_t out);
+
+int VectorCompare (vec3_t v1, vec3_t v2);
+vec_t Length (vec3_t v);
+void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross);
+float VectorNormalize (vec3_t v);	       // returns vector length
+void VectorInverse (vec3_t v);
+void VectorScale (vec3_t in, vec_t scale, vec3_t out);
+int Q_log2(int val);
+
+void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3]);
+void R_ConcatTransforms (float in1[3][4], float in2[3][4], float out[3][4]);
+
+void FloorDivMod (double numer, double denom, int *quotient,
+		int *rem);
+fixed16_t Invert24To16(fixed16_t val);
+fixed16_t Mul16_30(fixed16_t multiplier, fixed16_t multiplicand);
+int GreatestCommonDivisor (int i1, int i2);
+
+void AngleVectors (vec3_t angles, vec3_t forward, vec3_t right, vec3_t up);
+int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct mplane_s *plane);
+float   anglemod(float a);
+
+void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees );
+
+#define BOX_ON_PLANE_SIDE(emins, emaxs, p)				\
+	(((p)->type < 3)?									\
+	(													\
+		((p)->dist <= (emins)[(p)->type])?				\
+		1												\
+		:												\
+		(												\
+			((p)->dist >= (emaxs)[(p)->type])?			\
+			2											\
+			:											\
+			3											\
+		)												\
+	)													\
+	:													\
+	BoxOnPlaneSide( (emins), (emaxs), (p)))
+
+#endif // __mathlib_h