Add strverscmp() and versionsort[64]().

By Hai Zaar (haizaar AT codefidence.com)

2 files changed, 19 insertions, 2 deletions

diff --git a/include/dirent.h b/include/dirent.h
index e2fce367c..d17f10998 100644
--- a/include/dirent.h
+++ b/include/dirent.h
@@ -293,6 +293,25 @@ extern int alphasort64 (__const void *__e1, __const void *__e2)
      __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 --git a/include/string.h b/include/string.h
index ab1076565..6d6469100 100644
--- a/include/string.h
+++ b/include/string.h
@@ -422,11 +422,9 @@ libc_hidden_proto(strsep)
 
 #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;