unistr/u8-chr, unistr/u8-strchr: use Boyer-Moore like algorithm.

[gnulib.git] / lib / check-version.c

diff --git a/lib/check-version.c b/lib/check-version.c
index 2e3659c..740f7c5 100644 (file)
--- a/lib/check-version.c
+++ b/lib/check-version.c
@@ -1,6 +1,6 @@
 /* check-version.h --- Check version string compatibility.
-   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free
-   Software Foundation, Inc.
+   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2008,
+   2009, 2010 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -20,27 +20,24 @@
    gcry_check_version from Werner Koch's Libgcrypt.  Paul Eggert
    suggested the use of strverscmp to simplify implementation. */
 
-#if HAVE_CONFIG_H
-# include "config.h"
-#endif
+#include <config.h>
 
 #include <stddef.h>
-#include <strverscmp.h>
+#include <string.h>
 
 /* Get specification. */
 #include "check-version.h"
 
-/* Check that the the version of the library (i.e., the CPP symbol
- * VERSION) is at minimum the requested one in REQ_VERSION (typically
- * found in a header file) and return the version string.  Return NULL
- * if the condition is not satisfied.  If a NULL is passed to this
- * function, no check is done, but the version string is simply
- * returned.
+/* Check that the version of the library (i.e., the CPP symbol VERSION)
+ * is at minimum the requested one in REQ_VERSION (typically found in
+ * a header file) and return the version string.  Return NULL if the
+ * condition is not satisfied.  If a NULL is passed to this function,
+ * no check is done, but the version string is simply returned.
  */
 const char *
 check_version (const char *req_version)
 {
-  if (!req_version || strverscmp (req_version, VERSION) < 0)
+  if (!req_version || strverscmp (req_version, VERSION) <= 0)
     return VERSION;
 
   return NULL;