--- /dev/null
+diff -urN a/include/dirent.h b/include/dirent.h
+--- a/include/dirent.h 2011-03-14 09:54:12.980183443 +0300
++++ b/include/dirent.h 2011-03-14 10:07:34.290183418 +0300
+@@ -286,6 +286,25 @@
+ __THROW __attribute_pure__ __nonnull ((1, 2));
+ # endif
+
++/* Function to compare two `struct dirent's alphabetically. */
++# ifndef __USE_FILE_OFFSET64
++extern int versionsort (__const void *__e1, __const void *__e2)
++ __THROW __attribute_pure__ __nonnull ((1, 2));
++# else
++# ifdef __REDIRECT
++extern int __REDIRECT (versionsort,
++ (__const void *__e1, __const void *__e2),
++ versionsort64) __attribute_pure__ __nonnull ((1, 2));
++# else
++# define versionsort versionsort64
++# endif
++# endif
++
++# if defined __USE_GNU && defined __USE_LARGEFILE64
++extern int versionsort64 (__const void *__e1, __const void *__e2)
++ __THROW __attribute_pure__ __nonnull ((1, 2));
++# endif
++
+ #endif /* Use BSD or misc. */
+
+ __END_DECLS
+diff -urN a/include/string.h b/include/string.h
+--- a/include/string.h 2011-03-14 09:54:12.982185223 +0300
++++ b/include/string.h 2011-03-14 10:08:45.551183543 +0300
+@@ -442,11 +442,9 @@
+
+ #ifdef __USE_GNU
+ /* Compare S1 and S2 as strings holding name & indices/version numbers. */
+-#if 0
+ extern int strverscmp (__const char *__s1, __const char *__s2)
+ __THROW __attribute_pure__ __nonnull ((1, 2));
+ libc_hidden_proto(strverscmp)
+-#endif
+
+ /* Return a string describing the meaning of the signal number in SIG. */
+ extern char *strsignal (int __sig) __THROW;
+diff -urN a/libc/misc/dirent/Makefile.in b/libc/misc/dirent/Makefile.in
+--- a/libc/misc/dirent/Makefile.in 2011-03-14 09:54:13.071183374 +0300
++++ b/libc/misc/dirent/Makefile.in 2011-03-14 10:09:44.544183543 +0300
+@@ -6,10 +6,10 @@
+ #
+
+ CSRC := alphasort.c closedir.c dirfd.c opendir.c readdir.c rewinddir.c \
+- scandir.c seekdir.c telldir.c readdir_r.c
++ scandir.c seekdir.c telldir.c readdir_r.c versionsort.c
+
+ ifeq ($(UCLIBC_HAS_LFS),y)
+-CSRC += readdir64.c alphasort64.c scandir64.c readdir64_r.c
++CSRC += readdir64.c alphasort64.c scandir64.c readdir64_r.c versionsort64.c
+ endif
+
+ MISC_DIRENT_DIR := $(top_srcdir)libc/misc/dirent
+diff -urN a/libc/misc/dirent/versionsort64.c b/libc/misc/dirent/versionsort64.c
+--- a/libc/misc/dirent/versionsort64.c 1970-01-01 03:00:00.000000000 +0300
++++ b/libc/misc/dirent/versionsort64.c 2011-03-14 10:11:05.459183378 +0300
+@@ -0,0 +1,17 @@
++/*
++ * Copyright (C) 2008-2009 Hai Zaar, Codefidence Ltd <haizaar@codefidence.com>
++ *
++ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
++ */
++
++#include <_lfs_64.h>
++
++#include <dirent.h>
++#include <string.h>
++#include "dirstream.h"
++
++int versionsort64(const void *a, const void *b)
++{
++ return strverscmp((*(const struct dirent64 **) a)->d_name,
++ (*(const struct dirent64 **) b)->d_name);
++}
+diff -urN a/libc/misc/dirent/versionsort.c b/libc/misc/dirent/versionsort.c
+--- a/libc/misc/dirent/versionsort.c 1970-01-01 03:00:00.000000000 +0300
++++ b/libc/misc/dirent/versionsort.c 2011-03-14 10:10:33.191183386 +0300
+@@ -0,0 +1,15 @@
++/*
++ * Copyright (C) 2008-2009 Hai Zaar, Codefidence Ltd <haizaar@codefidence.com>
++ *
++ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
++ */
++
++#include <dirent.h>
++#include <string.h>
++#include "dirstream.h"
++
++int versionsort(const void *a, const void *b)
++{
++ return strverscmp((*(const struct dirent **) a)->d_name,
++ (*(const struct dirent **) b)->d_name);
++}
+diff -urN a/libc/string/strverscmp.c b/libc/string/strverscmp.c
+--- a/libc/string/strverscmp.c 1970-01-01 03:00:00.000000000 +0300
++++ b/libc/string/strverscmp.c 2011-03-14 10:03:35.000000000 +0300
+@@ -0,0 +1,118 @@
++/* GNU's strverscmp() function, taken from glibc 2.3.2 sources
++ */
++
++/* Compare strings while treating digits characters numerically.
++ Copyright (C) 1997, 2002 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++ Contributed by Jean-François Bignolles <bignolle@ecoledoc.ibp.fr>, 1997.
++
++ Derived work for uClibc by Hai Zaar, Codefidence Ltd <haizaar@codefidence.com>
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library 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
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, write to the Free
++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
++ 02111-1307 USA. */
++
++#include <string.h>
++#include <ctype.h>
++#include <stdint.h>
++
++
++/* states: S_N: normal, S_I: comparing integral part, S_F: comparing
++ fractional parts, S_Z: idem but with leading Zeroes only */
++#define S_N 0x0
++#define S_I 0x4
++#define S_F 0x8
++#define S_Z 0xC
++
++/* result_type: CMP: return diff; LEN: compare using len_diff/diff */
++#define CMP 2
++#define LEN 3
++
++/* using more efficient isdigit() */
++#undef isdigit
++#define isdigit(a) ((unsigned)((a) - '0') <= 9)
++
++/* Compare S1 and S2 as strings holding indices/version numbers,
++ returning less than, equal to or greater than zero if S1 is less than,
++ equal to or greater than S2 (for more info, see the texinfo doc).
++*/
++int strverscmp (const char *s1, const char *s2)
++{
++ const unsigned char *p1 = (const unsigned char *) s1;
++ const unsigned char *p2 = (const unsigned char *) s2;
++ unsigned char c1, c2;
++ int state;
++ int diff;
++
++ /* Symbol(s) 0 [1-9] others (padding)
++ Transition (10) 0 (01) d (00) x (11) - */
++ static const uint8_t next_state[] =
++ {
++ /* state x d 0 - */
++ /* S_N */ S_N, S_I, S_Z, S_N,
++ /* S_I */ S_N, S_I, S_I, S_I,
++ /* S_F */ S_N, S_F, S_F, S_F,
++ /* S_Z */ S_N, S_F, S_Z, S_Z
++ };
++
++ static const int8_t result_type[] =
++ {
++ /* state x/x x/d x/0 x/- d/x d/d d/0 d/-
++ 0/x 0/d 0/0 0/- -/x -/d -/0 -/- */
++
++ /* S_N */ CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP,
++ CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP,
++ /* S_I */ CMP, -1, -1, CMP, +1, LEN, LEN, CMP,
++ +1, LEN, LEN, CMP, CMP, CMP, CMP, CMP,
++ /* S_F */ CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP,
++ CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP,
++ /* S_Z */ CMP, +1, +1, CMP, -1, CMP, CMP, CMP,
++ -1, CMP, CMP, CMP
++ };
++
++ if (p1 == p2)
++ return 0;
++
++ c1 = *p1++;
++ c2 = *p2++;
++ /* Hint: '0' is a digit too. */
++ state = S_N | ((c1 == '0') + (isdigit (c1) != 0));
++
++ while ((diff = c1 - c2) == 0 && c1 != '\0')
++ {
++ state = next_state[state];
++ c1 = *p1++;
++ c2 = *p2++;
++ state |= (c1 == '0') + (isdigit (c1) != 0);
++ }
++
++ state = result_type[state << 2 | (((c2 == '0') + (isdigit (c2) != 0)))];
++
++ switch (state)
++ {
++ case CMP:
++ return diff;
++
++ case LEN:
++ while (isdigit (*p1++))
++ if (!isdigit (*p2++))
++ return 1;
++
++ return isdigit (*p2) ? -1 : diff;
++
++ default:
++ return state;
++ }
++}
++libc_hidden_def(strverscmp)
--- /dev/null
+diff -urN a/include/dirent.h b/include/dirent.h
+--- a/include/dirent.h 2011-03-14 09:54:12.980183443 +0300
++++ b/include/dirent.h 2011-03-14 10:07:34.290183418 +0300
+@@ -286,6 +286,25 @@
+ __THROW __attribute_pure__ __nonnull ((1, 2));
+ # endif
+
++/* Function to compare two `struct dirent's alphabetically. */
++# ifndef __USE_FILE_OFFSET64
++extern int versionsort (__const void *__e1, __const void *__e2)
++ __THROW __attribute_pure__ __nonnull ((1, 2));
++# else
++# ifdef __REDIRECT
++extern int __REDIRECT (versionsort,
++ (__const void *__e1, __const void *__e2),
++ versionsort64) __attribute_pure__ __nonnull ((1, 2));
++# else
++# define versionsort versionsort64
++# endif
++# endif
++
++# if defined __USE_GNU && defined __USE_LARGEFILE64
++extern int versionsort64 (__const void *__e1, __const void *__e2)
++ __THROW __attribute_pure__ __nonnull ((1, 2));
++# endif
++
+ #endif /* Use BSD or misc. */
+
+ __END_DECLS
+diff -urN a/include/string.h b/include/string.h
+--- a/include/string.h 2011-03-14 09:54:12.982185223 +0300
++++ b/include/string.h 2011-03-14 10:08:45.551183543 +0300
+@@ -442,11 +442,9 @@
+
+ #ifdef __USE_GNU
+ /* Compare S1 and S2 as strings holding name & indices/version numbers. */
+-#if 0
+ extern int strverscmp (__const char *__s1, __const char *__s2)
+ __THROW __attribute_pure__ __nonnull ((1, 2));
+ libc_hidden_proto(strverscmp)
+-#endif
+
+ /* Return a string describing the meaning of the signal number in SIG. */
+ extern char *strsignal (int __sig) __THROW;
+diff -urN a/libc/misc/dirent/Makefile.in b/libc/misc/dirent/Makefile.in
+--- a/libc/misc/dirent/Makefile.in 2011-03-14 09:54:13.071183374 +0300
++++ b/libc/misc/dirent/Makefile.in 2011-03-14 10:09:44.544183543 +0300
+@@ -6,10 +6,10 @@
+ #
+
+ CSRC := alphasort.c closedir.c dirfd.c opendir.c readdir.c rewinddir.c \
+- scandir.c seekdir.c telldir.c readdir_r.c
++ scandir.c seekdir.c telldir.c readdir_r.c versionsort.c
+
+ ifeq ($(UCLIBC_HAS_LFS),y)
+-CSRC += readdir64.c alphasort64.c scandir64.c readdir64_r.c
++CSRC += readdir64.c alphasort64.c scandir64.c readdir64_r.c versionsort64.c
+ endif
+
+ MISC_DIRENT_DIR := $(top_srcdir)libc/misc/dirent
+diff -urN a/libc/misc/dirent/versionsort64.c b/libc/misc/dirent/versionsort64.c
+--- a/libc/misc/dirent/versionsort64.c 1970-01-01 03:00:00.000000000 +0300
++++ b/libc/misc/dirent/versionsort64.c 2011-03-14 10:11:05.459183378 +0300
+@@ -0,0 +1,17 @@
++/*
++ * Copyright (C) 2008-2009 Hai Zaar, Codefidence Ltd <haizaar@codefidence.com>
++ *
++ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
++ */
++
++#include <_lfs_64.h>
++
++#include <dirent.h>
++#include <string.h>
++#include "dirstream.h"
++
++int versionsort64(const void *a, const void *b)
++{
++ return strverscmp((*(const struct dirent64 **) a)->d_name,
++ (*(const struct dirent64 **) b)->d_name);
++}
+diff -urN a/libc/misc/dirent/versionsort.c b/libc/misc/dirent/versionsort.c
+--- a/libc/misc/dirent/versionsort.c 1970-01-01 03:00:00.000000000 +0300
++++ b/libc/misc/dirent/versionsort.c 2011-03-14 10:10:33.191183386 +0300
+@@ -0,0 +1,15 @@
++/*
++ * Copyright (C) 2008-2009 Hai Zaar, Codefidence Ltd <haizaar@codefidence.com>
++ *
++ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
++ */
++
++#include <dirent.h>
++#include <string.h>
++#include "dirstream.h"
++
++int versionsort(const void *a, const void *b)
++{
++ return strverscmp((*(const struct dirent **) a)->d_name,
++ (*(const struct dirent **) b)->d_name);
++}
+diff -urN a/libc/string/strverscmp.c b/libc/string/strverscmp.c
+--- a/libc/string/strverscmp.c 1970-01-01 03:00:00.000000000 +0300
++++ b/libc/string/strverscmp.c 2011-03-14 10:03:35.000000000 +0300
+@@ -0,0 +1,118 @@
++/* GNU's strverscmp() function, taken from glibc 2.3.2 sources
++ */
++
++/* Compare strings while treating digits characters numerically.
++ Copyright (C) 1997, 2002 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++ Contributed by Jean-François Bignolles <bignolle@ecoledoc.ibp.fr>, 1997.
++
++ Derived work for uClibc by Hai Zaar, Codefidence Ltd <haizaar@codefidence.com>
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library 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
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, write to the Free
++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
++ 02111-1307 USA. */
++
++#include <string.h>
++#include <ctype.h>
++#include <stdint.h>
++
++
++/* states: S_N: normal, S_I: comparing integral part, S_F: comparing
++ fractional parts, S_Z: idem but with leading Zeroes only */
++#define S_N 0x0
++#define S_I 0x4
++#define S_F 0x8
++#define S_Z 0xC
++
++/* result_type: CMP: return diff; LEN: compare using len_diff/diff */
++#define CMP 2
++#define LEN 3
++
++/* using more efficient isdigit() */
++#undef isdigit
++#define isdigit(a) ((unsigned)((a) - '0') <= 9)
++
++/* Compare S1 and S2 as strings holding indices/version numbers,
++ returning less than, equal to or greater than zero if S1 is less than,
++ equal to or greater than S2 (for more info, see the texinfo doc).
++*/
++int strverscmp (const char *s1, const char *s2)
++{
++ const unsigned char *p1 = (const unsigned char *) s1;
++ const unsigned char *p2 = (const unsigned char *) s2;
++ unsigned char c1, c2;
++ int state;
++ int diff;
++
++ /* Symbol(s) 0 [1-9] others (padding)
++ Transition (10) 0 (01) d (00) x (11) - */
++ static const uint8_t next_state[] =
++ {
++ /* state x d 0 - */
++ /* S_N */ S_N, S_I, S_Z, S_N,
++ /* S_I */ S_N, S_I, S_I, S_I,
++ /* S_F */ S_N, S_F, S_F, S_F,
++ /* S_Z */ S_N, S_F, S_Z, S_Z
++ };
++
++ static const int8_t result_type[] =
++ {
++ /* state x/x x/d x/0 x/- d/x d/d d/0 d/-
++ 0/x 0/d 0/0 0/- -/x -/d -/0 -/- */
++
++ /* S_N */ CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP,
++ CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP,
++ /* S_I */ CMP, -1, -1, CMP, +1, LEN, LEN, CMP,
++ +1, LEN, LEN, CMP, CMP, CMP, CMP, CMP,
++ /* S_F */ CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP,
++ CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP,
++ /* S_Z */ CMP, +1, +1, CMP, -1, CMP, CMP, CMP,
++ -1, CMP, CMP, CMP
++ };
++
++ if (p1 == p2)
++ return 0;
++
++ c1 = *p1++;
++ c2 = *p2++;
++ /* Hint: '0' is a digit too. */
++ state = S_N | ((c1 == '0') + (isdigit (c1) != 0));
++
++ while ((diff = c1 - c2) == 0 && c1 != '\0')
++ {
++ state = next_state[state];
++ c1 = *p1++;
++ c2 = *p2++;
++ state |= (c1 == '0') + (isdigit (c1) != 0);
++ }
++
++ state = result_type[state << 2 | (((c2 == '0') + (isdigit (c2) != 0)))];
++
++ switch (state)
++ {
++ case CMP:
++ return diff;
++
++ case LEN:
++ while (isdigit (*p1++))
++ if (!isdigit (*p2++))
++ return 1;
++
++ return isdigit (*p2) ? -1 : diff;
++
++ default:
++ return state;
++ }
++}
++libc_hidden_def(strverscmp)
--- /dev/null
+diff -urN a/include/dirent.h b/include/dirent.h
+--- a/include/dirent.h 2011-03-14 09:54:12.980183443 +0300
++++ b/include/dirent.h 2011-03-14 10:07:34.290183418 +0300
+@@ -286,6 +286,25 @@
+ __THROW __attribute_pure__ __nonnull ((1, 2));
+ # endif
+
++/* Function to compare two `struct dirent's alphabetically. */
++# ifndef __USE_FILE_OFFSET64
++extern int versionsort (__const void *__e1, __const void *__e2)
++ __THROW __attribute_pure__ __nonnull ((1, 2));
++# else
++# ifdef __REDIRECT
++extern int __REDIRECT (versionsort,
++ (__const void *__e1, __const void *__e2),
++ versionsort64) __attribute_pure__ __nonnull ((1, 2));
++# else
++# define versionsort versionsort64
++# endif
++# endif
++
++# if defined __USE_GNU && defined __USE_LARGEFILE64
++extern int versionsort64 (__const void *__e1, __const void *__e2)
++ __THROW __attribute_pure__ __nonnull ((1, 2));
++# endif
++
+ #endif /* Use BSD or misc. */
+
+ __END_DECLS
+diff -urN a/include/string.h b/include/string.h
+--- a/include/string.h 2011-03-14 09:54:12.982185223 +0300
++++ b/include/string.h 2011-03-14 10:08:45.551183543 +0300
+@@ -442,11 +442,9 @@
+
+ #ifdef __USE_GNU
+ /* Compare S1 and S2 as strings holding name & indices/version numbers. */
+-#if 0
+ extern int strverscmp (__const char *__s1, __const char *__s2)
+ __THROW __attribute_pure__ __nonnull ((1, 2));
+ libc_hidden_proto(strverscmp)
+-#endif
+
+ /* Return a string describing the meaning of the signal number in SIG. */
+ extern char *strsignal (int __sig) __THROW;
+diff -urN a/libc/misc/dirent/Makefile.in b/libc/misc/dirent/Makefile.in
+--- a/libc/misc/dirent/Makefile.in 2011-03-14 09:54:13.071183374 +0300
++++ b/libc/misc/dirent/Makefile.in 2011-03-14 10:09:44.544183543 +0300
+@@ -6,10 +6,10 @@
+ #
+
+ CSRC := alphasort.c closedir.c dirfd.c opendir.c readdir.c rewinddir.c \
+- scandir.c seekdir.c telldir.c readdir_r.c
++ scandir.c seekdir.c telldir.c readdir_r.c versionsort.c
+
+ ifeq ($(UCLIBC_HAS_LFS),y)
+-CSRC += readdir64.c alphasort64.c scandir64.c readdir64_r.c
++CSRC += readdir64.c alphasort64.c scandir64.c readdir64_r.c versionsort64.c
+ endif
+
+ MISC_DIRENT_DIR := $(top_srcdir)libc/misc/dirent
+diff -urN a/libc/misc/dirent/versionsort64.c b/libc/misc/dirent/versionsort64.c
+--- a/libc/misc/dirent/versionsort64.c 1970-01-01 03:00:00.000000000 +0300
++++ b/libc/misc/dirent/versionsort64.c 2011-03-14 10:11:05.459183378 +0300
+@@ -0,0 +1,17 @@
++/*
++ * Copyright (C) 2008-2009 Hai Zaar, Codefidence Ltd <haizaar@codefidence.com>
++ *
++ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
++ */
++
++#include <_lfs_64.h>
++
++#include <dirent.h>
++#include <string.h>
++#include "dirstream.h"
++
++int versionsort64(const void *a, const void *b)
++{
++ return strverscmp((*(const struct dirent64 **) a)->d_name,
++ (*(const struct dirent64 **) b)->d_name);
++}
+diff -urN a/libc/misc/dirent/versionsort.c b/libc/misc/dirent/versionsort.c
+--- a/libc/misc/dirent/versionsort.c 1970-01-01 03:00:00.000000000 +0300
++++ b/libc/misc/dirent/versionsort.c 2011-03-14 10:10:33.191183386 +0300
+@@ -0,0 +1,15 @@
++/*
++ * Copyright (C) 2008-2009 Hai Zaar, Codefidence Ltd <haizaar@codefidence.com>
++ *
++ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
++ */
++
++#include <dirent.h>
++#include <string.h>
++#include "dirstream.h"
++
++int versionsort(const void *a, const void *b)
++{
++ return strverscmp((*(const struct dirent **) a)->d_name,
++ (*(const struct dirent **) b)->d_name);
++}
+diff -urN a/libc/string/strverscmp.c b/libc/string/strverscmp.c
+--- a/libc/string/strverscmp.c 1970-01-01 03:00:00.000000000 +0300
++++ b/libc/string/strverscmp.c 2011-03-14 10:03:35.000000000 +0300
+@@ -0,0 +1,118 @@
++/* GNU's strverscmp() function, taken from glibc 2.3.2 sources
++ */
++
++/* Compare strings while treating digits characters numerically.
++ Copyright (C) 1997, 2002 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++ Contributed by Jean-François Bignolles <bignolle@ecoledoc.ibp.fr>, 1997.
++
++ Derived work for uClibc by Hai Zaar, Codefidence Ltd <haizaar@codefidence.com>
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library 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
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, write to the Free
++ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
++ 02111-1307 USA. */
++
++#include <string.h>
++#include <ctype.h>
++#include <stdint.h>
++
++
++/* states: S_N: normal, S_I: comparing integral part, S_F: comparing
++ fractional parts, S_Z: idem but with leading Zeroes only */
++#define S_N 0x0
++#define S_I 0x4
++#define S_F 0x8
++#define S_Z 0xC
++
++/* result_type: CMP: return diff; LEN: compare using len_diff/diff */
++#define CMP 2
++#define LEN 3
++
++/* using more efficient isdigit() */
++#undef isdigit
++#define isdigit(a) ((unsigned)((a) - '0') <= 9)
++
++/* Compare S1 and S2 as strings holding indices/version numbers,
++ returning less than, equal to or greater than zero if S1 is less than,
++ equal to or greater than S2 (for more info, see the texinfo doc).
++*/
++int strverscmp (const char *s1, const char *s2)
++{
++ const unsigned char *p1 = (const unsigned char *) s1;
++ const unsigned char *p2 = (const unsigned char *) s2;
++ unsigned char c1, c2;
++ int state;
++ int diff;
++
++ /* Symbol(s) 0 [1-9] others (padding)
++ Transition (10) 0 (01) d (00) x (11) - */
++ static const uint8_t next_state[] =
++ {
++ /* state x d 0 - */
++ /* S_N */ S_N, S_I, S_Z, S_N,
++ /* S_I */ S_N, S_I, S_I, S_I,
++ /* S_F */ S_N, S_F, S_F, S_F,
++ /* S_Z */ S_N, S_F, S_Z, S_Z
++ };
++
++ static const int8_t result_type[] =
++ {
++ /* state x/x x/d x/0 x/- d/x d/d d/0 d/-
++ 0/x 0/d 0/0 0/- -/x -/d -/0 -/- */
++
++ /* S_N */ CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP,
++ CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP,
++ /* S_I */ CMP, -1, -1, CMP, +1, LEN, LEN, CMP,
++ +1, LEN, LEN, CMP, CMP, CMP, CMP, CMP,
++ /* S_F */ CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP,
++ CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP,
++ /* S_Z */ CMP, +1, +1, CMP, -1, CMP, CMP, CMP,
++ -1, CMP, CMP, CMP
++ };
++
++ if (p1 == p2)
++ return 0;
++
++ c1 = *p1++;
++ c2 = *p2++;
++ /* Hint: '0' is a digit too. */
++ state = S_N | ((c1 == '0') + (isdigit (c1) != 0));
++
++ while ((diff = c1 - c2) == 0 && c1 != '\0')
++ {
++ state = next_state[state];
++ c1 = *p1++;
++ c2 = *p2++;
++ state |= (c1 == '0') + (isdigit (c1) != 0);
++ }
++
++ state = result_type[state << 2 | (((c2 == '0') + (isdigit (c2) != 0)))];
++
++ switch (state)
++ {
++ case CMP:
++ return diff;
++
++ case LEN:
++ while (isdigit (*p1++))
++ if (!isdigit (*p2++))
++ return 1;
++
++ return isdigit (*p2) ? -1 : diff;
++
++ default:
++ return state;
++ }
++}
++libc_hidden_def(strverscmp)
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