mark functions with const and pure attributes

[gnulib.git] / lib / memcmp2.h

diff --git a/lib/memcmp2.h b/lib/memcmp2.h
index cbe6e8c..21552b2 100644 (file)
--- a/lib/memcmp2.h
+++ b/lib/memcmp2.h
@@ -29,7 +29,8 @@ extern "C" {
    This function's result is locale independent, unlike memcoll()'s.
    Return a negative number if S1 < S2, a positive number if S1 > S2, or
    0 if S1 and S2 have the same contents.  */
-extern int memcmp2 (const char *s1, size_t n1, const char *s2, size_t n2);
+extern int memcmp2 (const char *s1, size_t n1, const char *s2, size_t n2)
+  _GL_ATTRIBUTE_PURE;
 
 
 #ifdef __cplusplus