216 // Rotate algorithms make use of "Safe, Efficient, and Portable Rotate in C/C++"
222 rotr(T value, int rotate);
226 rotl(T value, int rotate) {  in rotl()  argument
228   rotate = rotate % N;  in rotl()
229   if (!rotate)  in rotl()
231   if (rotate < 0)  in rotl()
232     return cpp::rotr<T>(value, -rotate);  in rotl()
233   return (value << rotate) | (value >> (N - rotate));  in rotl()
238 rotr(T value, int rotate) {  in rotr()  argument
240   rotate = rotate % N;  in rotr()
241   if (!rotate)  in rotr()
243   if (rotate < 0)  in rotr()
244     return cpp::rotl<T>(value, -rotate);  in rotr()
245   return (value >> rotate) | (value << (N - rotate));  in rotr()