81 strlen (const char *str)  in strlen()  argument
87   const char *start = str;  in strlen()
89   while (*str)  in strlen()
90     str++;  in strlen()
92   return str - start;  in strlen()
94   const char *start = str;  in strlen()
97   if (!UNALIGNED (str))  in strlen()
101       aligned_addr = (unsigned long*)str;  in strlen()
107       str = (char*)aligned_addr;  in strlen()
110   while (*str)  in strlen()
111     str++;  in strlen()
112   return str - start;  in strlen()