#ifndef BIGDECIMAL_HAS_FEATURE_H

#define BIGDECIMAL_HAS_FEATURE_H

/* ======== __has_feature ======== */

#ifndef __has_feature

# define __has_feature(_) 0

#endif

/* ======== __has_extension ======== */

#ifndef __has_extension

# define __has_extension __has_feature

#endif

/* ======== __has_builtin ======== */

#ifdef HAVE_RUBY_INTERNAL_HAS_BUILTIN_H

# include <ruby/internal/has/builtin.h>

#endif

#ifdef RBIMPL_HAS_BUILTIN

# define BIGDECIMAL_HAS_BUILTIN(...) RBIMPL_HAS_BUILTIN(__VA_ARGS__)

#else

# /* The following section is copied from CRuby's builtin.h */

#

# ifdef __has_builtin

# if defined(__INTEL_COMPILER)

# /* :TODO: Intel C Compiler has __has_builtin (since 19.1 maybe?), and is

# * reportedly broken. We have to skip them. However the situation can

# * change. They might improve someday. We need to revisit here later. */

# elif defined(__GNUC__) && ! __has_builtin(__builtin_alloca)

# /* FreeBSD's <sys/cdefs.h> defines its own *broken* version of

# * __has_builtin. Cygwin copied that content to be a victim of the

# * broken-ness. We don't take them into account. */

# else

# define HAVE___HAS_BUILTIN 1

# endif

# endif

#

# if defined(HAVE___HAS_BUILTIN)

# define BIGDECIMAL_HAS_BUILTIN(_) __has_builtin(_)

#

# elif defined(__GNUC__)

# define BIGDECIMAL_HAS_BUILTIN(_) BIGDECIMAL_HAS_BUILTIN_ ## _

# if defined(__GNUC__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 6))

# define BIGDECIMAL_HAS_BUILTIN___builtin_clz 1

# define BIGDECIMAL_HAS_BUILTIN___builtin_clzl 1

# else

# define BIGDECIMAL_HAS_BUILTIN___builtin_clz 0

# define BIGDECIMAL_HAS_BUILTIN___builtin_clzl 0

# endif

# elif defined(_MSC_VER)

# define BIGDECIMAL_HAS_BUILTIN(_) 0

#

# else

# define BIGDECIMAL_HAS_BUILTIN(_) BIGDECIMAL_HAS_BUILTIN_ ## _

# define BIGDECIMAL_HAS_BUILTIN___builtin_clz HAVE_BUILTIN___BUILTIN_CLZ

# define BIGDECIMAL_HAS_BUILTIN___builtin_clzl HAVE_BUILTIN___BUILTIN_CLZL

# endif

#endif /* RBIMPL_HAS_BUILTIN */

#ifndef __has_builtin

# define __has_builtin(...) BIGDECIMAL_HAS_BUILTIN(__VA_ARGS__)

#endif

#endif /* BIGDECIMAL_HAS_FEATURE_H */