Refactor _LIBCPP_<LITTLE|BIG>_ENDIAN
Previously this macro used 0/1 to indicate if it was set.
This is unlike all other libc++ configuration macros which
use ifdef/ifndef.
This patch makes this macro consistent with everything else.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@315995 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__config b/include/__config
index b5b1fd5..d621723 100644
--- a/include/__config
+++ b/include/__config
@@ -184,36 +184,30 @@
#ifdef __LITTLE_ENDIAN__
#if __LITTLE_ENDIAN__
-#define _LIBCPP_LITTLE_ENDIAN 1
-#define _LIBCPP_BIG_ENDIAN 0
+#define _LIBCPP_LITTLE_ENDIAN
#endif // __LITTLE_ENDIAN__
#endif // __LITTLE_ENDIAN__
#ifdef __BIG_ENDIAN__
#if __BIG_ENDIAN__
-#define _LIBCPP_LITTLE_ENDIAN 0
-#define _LIBCPP_BIG_ENDIAN 1
+#define _LIBCPP_BIG_ENDIAN
#endif // __BIG_ENDIAN__
#endif // __BIG_ENDIAN__
#ifdef __BYTE_ORDER__
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-#define _LIBCPP_LITTLE_ENDIAN 1
-#define _LIBCPP_BIG_ENDIAN 0
+#define _LIBCPP_LITTLE_ENDIAN
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-#define _LIBCPP_LITTLE_ENDIAN 0
-#define _LIBCPP_BIG_ENDIAN 1
+#define _LIBCPP_BIG_ENDIAN
#endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#endif // __BYTE_ORDER__
#ifdef __FreeBSD__
# include <sys/endian.h>
# if _BYTE_ORDER == _LITTLE_ENDIAN
-# define _LIBCPP_LITTLE_ENDIAN 1
-# define _LIBCPP_BIG_ENDIAN 0
+# define _LIBCPP_LITTLE_ENDIAN
# else // _BYTE_ORDER == _LITTLE_ENDIAN
-# define _LIBCPP_LITTLE_ENDIAN 0
-# define _LIBCPP_BIG_ENDIAN 1
+# define _LIBCPP_BIG_ENDIAN
# endif // _BYTE_ORDER == _LITTLE_ENDIAN
# ifndef __LONG_LONG_SUPPORTED
# define _LIBCPP_HAS_NO_LONG_LONG
@@ -223,19 +217,16 @@
#ifdef __NetBSD__
# include <sys/endian.h>
# if _BYTE_ORDER == _LITTLE_ENDIAN
-# define _LIBCPP_LITTLE_ENDIAN 1
-# define _LIBCPP_BIG_ENDIAN 0
+# define _LIBCPP_LITTLE_ENDIAN
# else // _BYTE_ORDER == _LITTLE_ENDIAN
-# define _LIBCPP_LITTLE_ENDIAN 0
-# define _LIBCPP_BIG_ENDIAN 1
+# define _LIBCPP_BIG_ENDIAN
# endif // _BYTE_ORDER == _LITTLE_ENDIAN
# define _LIBCPP_HAS_QUICK_EXIT
#endif // __NetBSD__
#if defined(_WIN32)
# define _LIBCPP_WIN32API
-# define _LIBCPP_LITTLE_ENDIAN 1
-# define _LIBCPP_BIG_ENDIAN 0
+# define _LIBCPP_LITTLE_ENDIAN
# define _LIBCPP_SHORT_WCHAR 1
// Both MinGW and native MSVC provide a "MSVC"-like enviroment
# define _LIBCPP_MSVCRT_LIKE
@@ -265,11 +256,9 @@
#ifdef __sun__
# include <sys/isa_defs.h>
# ifdef _LITTLE_ENDIAN
-# define _LIBCPP_LITTLE_ENDIAN 1
-# define _LIBCPP_BIG_ENDIAN 0
+# define _LIBCPP_LITTLE_ENDIAN
# else
-# define _LIBCPP_LITTLE_ENDIAN 0
-# define _LIBCPP_BIG_ENDIAN 1
+# define _LIBCPP_BIG_ENDIAN
# endif
#endif // __sun__
@@ -290,18 +279,16 @@
# define _LIBCPP_USING_DEV_RANDOM
#endif
-#if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
+#if !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN)
# include <endian.h>
# if __BYTE_ORDER == __LITTLE_ENDIAN
-# define _LIBCPP_LITTLE_ENDIAN 1
-# define _LIBCPP_BIG_ENDIAN 0
+# define _LIBCPP_LITTLE_ENDIAN
# elif __BYTE_ORDER == __BIG_ENDIAN
-# define _LIBCPP_LITTLE_ENDIAN 0
-# define _LIBCPP_BIG_ENDIAN 1
+# define _LIBCPP_BIG_ENDIAN
# else // __BYTE_ORDER == __BIG_ENDIAN
# error unable to determine endian
# endif
-#endif // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
+#endif // !defined(_LIBCPP_LITTLE_ENDIAN) && !defined(_LIBCPP_BIG_ENDIAN)
#if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC)
#define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi")))
