#ifndef __config_H
#define __config_H
/*
 * Copyright (c) 2001-2012 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
 *    General Public License as published by the Free Software
 *    Foundation; either version 2 of the License, or (at your option)
 *    any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#if defined(__cplusplus)
#  if !defined(__GNUC__)
     using namespace std;
#  elif (__GNUC__ == 3)
     using namespace std;
#  endif
#endif

# define SIZEOF_UNSIGNED_LONG_LONG 0
#ifndef SIZEOF_UNSIGNED_LONG
# define SIZEOF_UNSIGNED_LONG 0
#endif
# define SIZEOF_UNSIGNED 0

# undef NEED_LU
# undef NEED_TU
# undef WLU
# undef WTU
# undef HAVE_IOSFWD
# undef HAVE_DLFCN_H
# undef HAVE_DL_H
# undef HAVE_GETOPT_H
# undef HAVE_LIBREADLINE
# undef HAVE_READLINE_READLINE_H
# undef HAVE_LIBHISTORY
# undef HAVE_READLINE_HISTORY_H
# undef HAVE_INTTYPES_H
# undef HAVE_LROUND
# undef HAVE_LLROUND
# undef HAVE_NAN
# undef UINT64_T_AND_ULONG_SAME

/*
 * Define this if you want to compile vvp with memory freeing and
 * special valgrind hooks for the memory pools.
 */
# undef CHECK_WITH_VALGRIND

/* Figure if I can use readline. */
#undef USE_READLINE
#ifdef HAVE_LIBREADLINE
#ifdef HAVE_READLINE_READLINE_H
# define USE_READLINE
#endif
#endif

/* Figure if I can use history. */
#undef USE_HISTORY
#ifdef HAVE_LIBHISTORY
#ifdef HAVE_READLINE_HISTORY_H
# define USE_HISTORY
#endif
#endif

#ifndef MODULE_DIR
# define MODULE_DIR "."
#endif

#ifdef HAVE_INTTYPES_H
/* This is needed in C++ to get the PRI?64 formats. */
# ifndef __STDC_FORMAT_MACROS
#  define __STDC_FORMAT_MACROS
# endif
# include  <inttypes.h>

typedef uint64_t vvp_time64_t;

#ifdef __MINGW32__
# define TIME_FMT_O "I64o"
# define TIME_FMT_U "I64u"
# define TIME_FMT_X "I64x"
#else
# define TIME_FMT_O PRIo64
# define TIME_FMT_U PRIu64
# define TIME_FMT_X PRIx64
#endif

# if UINT64_T_AND_ULONG_SAME
#  define UL_AND_TIME64_SAME
# endif

#else /* HAVE_INTTYPES_H */


#if SIZEOF_UNSIGNED >= 8
typedef unsigned vvp_time64_t;
# define TIME_FMT_O "o"
# define TIME_FMT_U "u"
# define TIME_FMT_X "x"
#else
# if SIZEOF_UNSIGNED_LONG >= 8
typedef unsigned long vvp_time64_t;
#  define UL_AND_TIME64_SAME
#  define TIME_FMT_O "lo"
#  define TIME_FMT_U "lu"
#  define TIME_FMT_X "lx"
# else
#  if SIZEOF_UNSIGNED_LONG_LONG > SIZEOF_UNSIGNED_LONG
typedef unsigned long long vvp_time64_t;
#   define TIME_FMT_O "llo"
#   define TIME_FMT_U "llu"
#   define TIME_FMT_X "llx"
#  else
typedef unsigned long vvp_time64_t;
#   define UL_AND_TIME64_SAME
#   define TIME_FMT_O "lo"
#   define TIME_FMT_U "lu"
#   define TIME_FMT_X "lx"
#  endif
# endif
#endif

#endif /* HAVE_INTTYPES_H */

# include  <cmath>

/* getrusage, /proc/self/statm */

# undef HAVE_SYS_RESOURCE_H
# undef LINUX

#if !defined(HAVE_LROUND)
/*
 * If the system doesn't provide the lround function, then we provide
 * it ourselves here. It is simply the nearest integer, rounded away
 * from zero.
 */
inline long int lround(double x)
{
      if (x >= 0.0)
	    return (long)floor(x+0.5);
      else
	    return (long)ceil(x-0.5);
}
#endif /* HAVE_LROUND */

#if ((SIZEOF_UNSIGNED_LONG < 8) && (SIZEOF_UNSIGNED_LONG_LONG >= 8))
#if !defined(HAVE_LLROUND)
/*
 * We also need an equivalent function with a 64-bit return value if
 * it is not available.
 */
inline int64_t i64round(double x)
{
      if (x >= 0.0)
	    return (int64_t)floor(x+0.5);
      else
	    return (int64_t)ceil(x-0.5);
}
#else /* HAVE_LLROUND */
# define i64round llround
#endif /* HAVE_LLROUND */
#else
# define i64round lround
#endif

#if !defined(HAVE_NAN)
# define nan(x) (NAN)
#endif

#if !defined(INFINITY)
# define INFINITY HUGE_VAL
#endif

/*
 * When doing dynamic linking, we need a uniform way to identify the
 * symbol. Some compilers put leading _, some trailing _. The
 * configure script figures out which is the local convention and
 * defines NEED_LU and NEED_TU as required.
 */
#ifdef NEED_LU
#define LU "_"
#else
#define LU ""
#endif

#ifdef NEED_TU
#define TU "_"
#else
#define TU ""
#endif

#endif
