82 strlen (const char *str)  in strlen()  argument
88   const char *start = str;  in strlen()
90   while (*str)  in strlen()
91     str++;  in strlen()
93   return str - start;  in strlen()
95   const char *start = str;  in strlen()
98   if (!UNALIGNED (str))  in strlen()
102       aligned_addr = (unsigned long*)str;  in strlen()
108       str = (char*)aligned_addr;  in strlen()
111   while (*str)  in strlen()
112     str++;  in strlen()
113   return str - start;  in strlen()