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-rw-r--r--include/ctype.h46
1 files changed, 45 insertions, 1 deletions
diff --git a/include/ctype.h b/include/ctype.h
index 7b51e1f5eb..3100853ab4 100644
--- a/include/ctype.h
+++ b/include/ctype.h
@@ -1 +1,45 @@
-#include <ctype/ctype.h>
+#ifndef _CTYPE_H
+
+# include <ctype/ctype.h>
+
+# ifndef NOT_IN_libc
+
+/* The optimized macros are not defined for users because they can't see
+   the thread-local locale state.  For inside libc, define them using the
+   _NL_CURRENT accessors.  We don't use _NL_CURRENT_LOCALE->__ctype_b here
+   because we want to cause a link-time ref to _nl_current_LC_CTYPE under
+   NL_CURRENT_INDIRECT.  */
+
+#  include "../locale/localeinfo.h"
+#  define __isctype(c, type) \
+     (((uint16_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_CLASS) + 128) \
+      [(int) (c)] & (uint16_t) type)
+#  ifndef __NO_CTYPE
+#   define isalnum(c)	__isctype((c), _ISalnum)
+#   define isalpha(c)	__isctype((c), _ISalpha)
+#   define iscntrl(c)	__isctype((c), _IScntrl)
+#   define isdigit(c)	__isctype((c), _ISdigit)
+#   define islower(c)	__isctype((c), _ISlower)
+#   define isgraph(c)	__isctype((c), _ISgraph)
+#   define isprint(c)	__isctype((c), _ISprint)
+#   define ispunct(c)	__isctype((c), _ISpunct)
+#   define isspace(c)	__isctype((c), _ISspace)
+#   define isupper(c)	__isctype((c), _ISupper)
+#   define isxdigit(c)	__isctype((c), _ISxdigit)
+#   define isblank(c)	__isctype((c), _ISblank)
+
+#   define tolower(c) \
+      __tobody (c, tolower, \
+		(uint32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOLOWER) + 128, \
+		(c))
+#   define _tolower(c) tolower (c)
+#   define toupper(c) \
+      __tobody (c, toupper, \
+		(uint32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOUPPER) + 128, \
+		(c))
+#   define _toupper(c) toupper (c)
+
+#  endif /* Not __NO_CTYPE.  */
+# endif	/* _LIBC_REENTRANT.  */
+
+#endif /* ctype.h */