#ifndef _COMMON_H
#define _COMMON_H

// basically the common header file; all
// of everything includes this in RAVEN.
// it prevents me from having to add commonly
// included files to every file.

#if defined(__linux__)
#	include <cstdlib>
#	include <cstdio>
#	include <cstring>
#	include <iostream>
#	include "GLee.h"
#	include <GL/glu.h>
#	include <GL/glx.h>
#	include <X11/X.h>
#	include <X11/keysym.h>
#	include <X11/extensions/xf86vmode.h>
#elif defined(WIN32)||defined(__WIN32__)||defined(_MSC_VER)
#	include <windows.h>
#	include "GLee.h"
#	include <GL/glu.h>
#	include <d3d9.h>
#	include <cstdlib>
#	include <cstdio>
#	include <cstring>
#	include <iostream>
#endif

#ifndef UINT8
#define UINT8 unsigned char
#endif

// map smaller integer types to a 32 bit integer
#define MSHORT2(a,b) (a|(b<<16))
#define MCHAR2(a,b) (a|(b<<8))
#define MCHAR4(a,b,c,d) (a|(b<<8)|(c<<16)|(d<<24))

// check if x is a power of two
static inline bool is_pow2(const int x)
{
	return (x&(x-1))==0;
}

// find the next power of two up from x
static inline int next_pow2(const int x)
{
	register int i;
	for (i=1; i<x; i<<=1) ;
	return i;
}

#endif