#define memsetU_GCC( s, c, len )  { SAP_UC* _mr = (__builtin_constant_p(c) && (SAP_UC_LN == 2) \
                                     && ((c) & 0xff) == (((c)>>8) & 0xff) )             \
                                   ? ((SAP_UC*) memsetR(s, c, (len)*SAP_UC_LN))         \
                                   : (SAP_UNAME_MEM_RET(memset)( s, U_CHAR(c), len ));  \
                                   (_mr); }