Don't use expensive wide char lookups in isw* functions if character is in ASCII range.

wctype/wcfuncs.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2001, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2001, 2002, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,6 +16,7 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <ctype.h>
 #include <wctype.h>
 #include <locale/localeinfo.h>
 
@@ -24,45 +25,47 @@
 /* Provide real-function versions of all the wctype macros.  */
 
 #define	func(name, type)						      \
-  extern int __##name (wint_t __wc);					      \
+  extern int __isw##name (wint_t __wc);					      \
   int									      \
-  __##name (wint_t wc)							      \
+  __isw##name (wint_t wc)						      \
   {									      \
+    if (isascii (wc))							      \
+      return is##name ((int) wc);					      \
     size_t i = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_CLASS_OFFSET) + type;    \
     const char *desc = _NL_CURRENT (LC_CTYPE, i);			      \
     return wctype_table_lookup (desc, wc);				      \
   }									      \
-  weak_alias (__##name, name)
+  weak_alias (__isw##name, isw##name)
 
 #undef iswalnum
-func (iswalnum, __ISwalnum)
+func (alnum, __ISwalnum)
 libc_hidden_weak (iswalnum)
 #undef iswalpha
-func (iswalpha, __ISwalpha)
+func (alpha, __ISwalpha)
 libc_hidden_weak (iswalpha)
 #undef iswblank
-func (iswblank, __ISwblank)
+func (blank, __ISwblank)
 #undef iswcntrl
-func (iswcntrl, __ISwcntrl)
+func (cntrl, __ISwcntrl)
 #undef iswdigit
-func (iswdigit, __ISwdigit)
+func (digit, __ISwdigit)
 libc_hidden_weak (iswdigit)
 #undef iswlower
-func (iswlower, __ISwlower)
+func (lower, __ISwlower)
 libc_hidden_weak (iswlower)
 #undef iswgraph
-func (iswgraph, __ISwgraph)
+func (graph, __ISwgraph)
 #undef iswprint
-func (iswprint, __ISwprint)
+func (print, __ISwprint)
 #undef iswpunct
-func (iswpunct, __ISwpunct)
+func (punct, __ISwpunct)
 #undef iswspace
-func (iswspace, __ISwspace)
+func (space, __ISwspace)
 libc_hidden_weak (iswspace)
 #undef iswupper
-func (iswupper, __ISwupper)
+func (upper, __ISwupper)
 #undef iswxdigit
-func (iswxdigit, __ISwxdigit)
+func (xdigit, __ISwxdigit)
 libc_hidden_weak (iswxdigit)
 
 #undef towlower

wctype/wcfuncs_l.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 1996,1997,2000,2001,2002,2004 Free Software Foundation, Inc.
+/* Copyright (C) 1996,1997,2000-2002,2004,2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,6 +16,7 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <ctype.h>
 #include <wctype.h>
 #include <stdint.h>
 #include <locale.h>
@@ -27,29 +28,31 @@
 /* Provide real-function versions of all the wctype macros.  */
 
 #define	func(name, type) \
-  int __##name (wint_t wc, __locale_t locale)				      \
+  int __isw##name (wint_t wc, __locale_t locale)			      \
   {									      \
+    if (isascii (wc))							      \
+      return is##name ((int) wc, locale);				      \
     size_t i = locale->__locales[LC_CTYPE]->values[_NL_ITEM_INDEX (_NL_CTYPE_CLASS_OFFSET)].word + type; \
     const char *desc = locale->__locales[LC_CTYPE]->values[i].string;	      \
     return wctype_table_lookup (desc, wc);				      \
   }									      \
-  libc_hidden_def (__##name)						      \
-  weak_alias (__##name, name)
+  libc_hidden_def (__isw##name)						      \
+  weak_alias (__isw##name, isw##name)
 
-func (iswalnum_l, __ISwalnum)
-func (iswalpha_l, __ISwalpha)
-func (iswblank_l, __ISwblank)
-func (iswcntrl_l, __ISwcntrl)
+func (alnum_l, __ISwalnum)
+func (alpha_l, __ISwalpha)
+func (blank_l, __ISwblank)
+func (cntrl_l, __ISwcntrl)
 #undef iswdigit_l
 #undef __iswdigit_l
-func (iswdigit_l, __ISwdigit)
-func (iswlower_l, __ISwlower)
-func (iswgraph_l, __ISwgraph)
-func (iswprint_l, __ISwprint)
-func (iswpunct_l, __ISwpunct)
-func (iswspace_l, __ISwspace)
-func (iswupper_l, __ISwupper)
-func (iswxdigit_l, __ISwxdigit)
+func (digit_l, __ISwdigit)
+func (lower_l, __ISwlower)
+func (graph_l, __ISwgraph)
+func (print_l, __ISwprint)
+func (punct_l, __ISwpunct)
+func (space_l, __ISwspace)
+func (upper_l, __ISwupper)
+func (xdigit_l, __ISwxdigit)
 
 wint_t
 (__towlower_l) (wint_t wc, __locale_t locale)