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Function `core.bitop.rol`

Bitwise rotate value left (rol) or right (ror) by count bit positions.


						
				T rol(T)
				(
				

				  const T value,
				

				  const uint count
				

				) pure
				

				if (__traits(isIntegral, T) && __traits(isUnsigned, T));
				

				

				T rol(uint count, T)
				(
				

				  const T value
				

				) pure
				

				if (__traits(isIntegral, T) && __traits(isUnsigned, T));

Example

ubyte a = 0b11110000U;
ulong b = ~1UL;

writeln(rol(a, 1)); // 0b11100001
writeln(ror(a, 1)); // 0b01111000
writeln(rol(a, 3)); // 0b10000111
writeln(ror(a, 3)); // 0b00011110

writeln(rol(a, 0)); // a
writeln(ror(a, 0)); // a

writeln(rol(b, 63)); // ~(1UL << 63)
writeln(ror(b, 63)); // ~2UL

writeln(rol!3(a)); // 0b10000111
writeln(ror!3(a)); // 0b00011110

enum c = rol(uint(1), 0);
enum d = ror(uint(1), 0);
writeln(c); // uint(1)
writeln(d); // uint(1)

Authors

Don Clugston, Sean Kelly, Walter Bright, Alex Rønne Petersen, Thomas Stuart Bockman

License

Boost License 1.0