/******************************************************************************
$Id: swapint.c,v 1.1 2013/02/14 16:58:03 pascal Exp $

 *****************************************************************************/
#if HAVE_BYTESWAP_H
#include <byteswap.h>
#else
#include "EndianSwap/byteswap.h"
#endif

#include "config.h"
#include "EndianSwap/swapint.h"


/******************************************************************************
ES_swap_long
###############
Swap a long value from big-endian representation to little-endian

IN:
const long *val : pointer to the long value represented as big-endian 

RETURN: 
long : long value represented as little-endian.
 *****************************************************************************/

long ES_swap_long(const long *val) 
{
#if SIZEOF_LONG == 4
  return bswap_32(*val);
#elif SIZEOF_LONG == 2
  return bswap_16(*val);
#else
  long tmp_val = *val;
  ES_swap(&tmp_val, SIZEOF_LONG);
  return(tmp_val);
#endif
}

/******************************************************************************
ES_swap_int
###############
Swap a int value from big-endian representation to little-endian

IN:
const int *val : pointer to the int value represented as big-endian 

RETURN: 
int : int value represented as little-endian.
 *****************************************************************************/

int ES_swap_int(const int *val) 
{
#if SIZEOF_INT == 4
  return bswap_32(*val);
#elif SIZEOF_INT == 2
  return bswap_16(*val);
#else
  int tmp_val = *val;
  ES_swap(&tmp_val, SIZEOF_INT);
  return(tmp_val);
#endif
}

/******************************************************************************
ES_swap_short
###############
Swap a short value from big-endian representation to little-endian

IN:
const short *val : pointer to the short value represented as big-endian 

RETURN: 
short : short value represented as little-endian.
 *****************************************************************************/

short ES_swap_short(const short *val) 
{
#if SIZEOF_SHORT == 2
  return bswap_16(*val);
#else
  short tmp_val = *val;
  ES_swap(&tmp_val, SIZEOF_SHORT);
  return(tmp_val);
#endif
}