#ifndef INCLUDED_USRP_BYTESEX_H
#define INCLUDED_USRP_BYTESEX_H

/*!
 * \brief routines for convertering between host and usrp byte order
 *
 * Prior to including this file, the user must include "config.h"
 * which will or won't define WORDS_BIGENDIAN based on the
 * result of the AC_C_BIGENDIAN autoconf test.
 */

#ifdef HAVE_BYTESWAP_H
#include <byteswap.h>
#else

#warning Using non-portable code (likely wrong other than ILP32).

static inline unsigned short int
bswap_16 (unsigned short int x)
{
  return ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8));
}

static inline unsigned int
bswap_32 (unsigned int x)
{
  return ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) \
        | (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24));
}
#endif


#ifdef WORDS_BIGENDIAN

static inline unsigned int
host_to_usrp_u32 (unsigned int x)
{
  return bswap_32(x);
}

static inline unsigned int
usrp_to_host_u32 (unsigned int x)
{
  return bswap_32(x);
}

static inline short int
host_to_usrp_short (short int x)
{
  return bswap_16 (x);
}

static inline short int
usrp_to_host_short (short int x)
{
  return bswap_16 (x);
}

#else

static inline unsigned int
host_to_usrp_u32 (unsigned int x)
{
  return x;
}

static inline unsigned int
usrp_to_host_u32 (unsigned int x)
{
  return x;
}

static inline short int
host_to_usrp_short (short int x)
{
  return x;
}

static inline short int
usrp_to_host_short (unsigned short int x)
{
  return x;
}

#endif

#endif /* INCLUDED_USRP_BYTESEX_H */