/* Copyright (C) 2010 by Daniel Stenberg
 *
 * Permission to use, copy, modify, and distribute this
 * software and its documentation for any purpose and without
 * fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting
 * documentation, and that the name of M.I.T. not be used in
 * advertising or publicity pertaining to distribution of the
 * software without specific, written prior permission.
 * M.I.T. makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 */


#include "ares_setup.h"

#ifdef HAVE_ASSERT_H
#  include <assert.h>
#endif

#include "ares_nowarn.h"

#if (SIZEOF_INT == 2)
#  define CARES_MASK_SINT  0x7FFF
#  define CARES_MASK_UINT  0xFFFF
#elif (SIZEOF_INT == 4)
#  define CARES_MASK_SINT  0x7FFFFFFF
#  define CARES_MASK_UINT  0xFFFFFFFF
#elif (SIZEOF_INT == 8)
#  define CARES_MASK_SINT  0x7FFFFFFFFFFFFFFF
#  define CARES_MASK_UINT  0xFFFFFFFFFFFFFFFF
#elif (SIZEOF_INT == 16)
#  define CARES_MASK_SINT  0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
#  define CARES_MASK_UINT  0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
#endif

/*
** unsigned size_t to signed int
*/

int aresx_uztosi(size_t uznum)
{
#ifdef __INTEL_COMPILER
#  pragma warning(push)
#  pragma warning(disable:810) /* conversion may lose significant bits */
#endif

  return (int)(uznum & (size_t) CARES_MASK_SINT);

#ifdef __INTEL_COMPILER
#  pragma warning(pop)
#endif
}

/*
** signed long to signed int
*/

int aresx_sltosi(long slnum)
{
#ifdef __INTEL_COMPILER
#  pragma warning(push)
#  pragma warning(disable:810) /* conversion may lose significant bits */
#endif

  DEBUGASSERT(slnum >= 0);
  return (int)(slnum & (long) CARES_MASK_SINT);

#ifdef __INTEL_COMPILER
#  pragma warning(pop)
#endif
}

/*
** signed ssize_t to signed int
*/

int aresx_sztosi(ssize_t sznum)
{
#ifdef __INTEL_COMPILER
#  pragma warning(push)
#  pragma warning(disable:810) /* conversion may lose significant bits */
#endif

  DEBUGASSERT(sznum >= 0);
  return (int)(sznum & (ssize_t) CARES_MASK_SINT);

#ifdef __INTEL_COMPILER
#  pragma warning(pop)
#endif
}

/*
** signed ssize_t to unsigned int
*/

unsigned int aresx_sztoui(ssize_t sznum)
{
#ifdef __INTEL_COMPILER
#  pragma warning(push)
#  pragma warning(disable:810) /* conversion may lose significant bits */
#endif

  DEBUGASSERT(sznum >= 0);
  return (unsigned int)(sznum & (ssize_t) CARES_MASK_UINT);

#ifdef __INTEL_COMPILER
#  pragma warning(pop)
#endif
}