diff -r f1b2146d4805 -r 6af5798342e8 src/ucx/string.h
--- a/src/ucx/string.h	Sun Apr 01 09:51:01 2018 +0200
+++ b/src/ucx/string.h	Tue May 08 12:49:56 2018 +0200
@@ -76,6 +76,7 @@
     const char *ptr;
     size_t     length;
 } scstr_t;
+
 #ifdef	__cplusplus
 }
 #endif
@@ -168,7 +169,9 @@
  * @param ...      all other strings
  * @return the cumulated length of all strings
  */
-size_t sstrnlen(size_t count, sstr_t string, ...);
+size_t ucx_strnlen(size_t count, ...);
+
+#define sstrnlen(count, ...) ucx_strnlen(count, __VA_ARGS__)
 
 /**
  * Concatenates two or more strings.
@@ -185,7 +188,9 @@
  * @param ...     all remaining strings
  * @return the concatenated string
  */
-sstr_t sstrcat(size_t count, sstr_t s1, sstr_t s2, ...);
+sstr_t ucx_strcat(size_t count, scstr_t s1, ...);
+
+#define sstrcat(count, s1, ...) ucx_strcat(count, SCSTR(s1), __VA_ARGS__)
 
 /**
  * Concatenates two or more strings using a UcxAllocator.
@@ -199,8 +204,9 @@
  * @param ...     all remaining strings
  * @return the concatenated string
  */
-sstr_t sstrcat_a(UcxAllocator *a, size_t count, sstr_t s1, sstr_t s2, ...);
+sstr_t ucx_strcat_a(UcxAllocator *a, size_t count, scstr_t s1, ...);
 
+#define sstrcat_a(count, s1, ...) ucx_strcat_a(count, SCSTR(s1), __VA_ARGS__)
 
 /**
  * Returns a substring starting at the specified location.