#ifndef __X_H__
#define __X_H__

#ifdef __cplusplus
extern "C" {
#endif

#ifdef __VSF__
// __VSF__ should be checked before __WINDOWS__
//  because even if vsf running on Windows, it emulates a linux
# undef _WIN32
# define __linux__
#endif
#if (defined(_WIN16) || defined(_WIN32) || defined(_WIN64)) && !defined(__WINDOWS__)
# define __WINDOWS__
#endif
#if defined(__linux__) || defined(__CYGWIN__)
# include <endian.h>
#elif defined(__MACH__)
# include <sys/types.h>
#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
# include <sys/endian.h>
#elif defined(__WINDOWS__)
# include <winsock2.h>
# include <sys/param.h>
# include <sys/time.h>
#else
# error "platform not supported!"
#endif

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <libusb.h>

static inline uint16_t __swab16(uint16_t x)
{
	return ( (x<<8) | (x>>8) );
}

static inline uint32_t __swab32(uint32_t x)
{
	return ( (x<<24) | (x>>24) | \
		((x & (uint32_t)0x0000ff00UL)<<8) | \
		((x & (uint32_t)0x00ff0000UL)>>8) );
}

static inline uint64_t __swab64(uint64_t x)
{
	return ( (x<<56) | (x>>56) | \
		((x & (uint64_t)0x000000000000ff00ULL)<<40) | \
		((x & (uint64_t)0x0000000000ff0000ULL)<<24) | \
		((x & (uint64_t)0x00000000ff000000ULL)<< 8) | \
		((x & (uint64_t)0x000000ff00000000ULL)>> 8) | \
		((x & (uint64_t)0x0000ff0000000000ULL)>>24) | \
		((x & (uint64_t)0x00ff000000000000ULL)>>40) );
}

static inline uint32_t __swahw32(uint32_t x)
{
	return ( ((x & (uint32_t)0x0000ffffUL)<<16) | ((x & (uint32_t)0xffff0000UL)>>16) );
}

static inline uint32_t __swahb32(uint32_t x)
{
	return ( ((x & (uint32_t)0x00ff00ffUL)<<8) | ((x & (uint32_t)0xff00ff00UL)>>8) );
}

#if BYTE_ORDER == BIG_ENDIAN
#define cpu_to_le64(x)	(__swab64((uint64_t)(x)))
#define le64_to_cpu(x)	(__swab64((uint64_t)(x)))
#define cpu_to_le32(x)	(__swab32((uint32_t)(x)))
#define le32_to_cpu(x)	(__swab32((uint32_t)(x)))
#define cpu_to_le16(x)	(__swab16((uint16_t)(x)))
#define le16_to_cpu(x)	(__swab16((uint16_t)(x)))
#define cpu_to_be64(x)	((uint64_t)(x))
#define be64_to_cpu(x)	((uint64_t)(x))
#define cpu_to_be32(x)	((uint32_t)(x))
#define be32_to_cpu(x)	((uint32_t)(x))
#define cpu_to_be16(x)	((uint16_t)(x))
#define be16_to_cpu(x)	((uint16_t)(x))
#else
#define cpu_to_le64(x)	((uint64_t)(x))
#define le64_to_cpu(x)	((uint64_t)(x))
#define cpu_to_le32(x)	((uint32_t)(x))
#define le32_to_cpu(x)	((uint32_t)(x))
#define cpu_to_le16(x)	((uint16_t)(x))
#define le16_to_cpu(x)	((uint16_t)(x))
#define cpu_to_be64(x)	(__swab64((uint64_t)(x)))
#define be64_to_cpu(x)	(__swab64((uint64_t)(x)))
#define cpu_to_be32(x)	(__swab32((uint32_t)(x)))
#define be32_to_cpu(x)	(__swab32((uint32_t)(x)))
#define cpu_to_be16(x)	(__swab16((uint16_t)(x)))
#define be16_to_cpu(x)	(__swab16((uint16_t)(x)))
#endif

#define ARRAY_SIZE(array)	(sizeof(array) / sizeof((array)[0]))
#define X(...)				("" #__VA_ARGS__ "")

#ifdef __cplusplus
}
#endif

#endif /* __X_H__ */