Method endIncr

include/dsp/ringbuffer.hpp:125–137

		return &data[i];
	}
	void endIncr(size_t n) {
		size_t i = end % S;
		size_t e1 = i + n;
		size_t e2 = (e1 < S) ? e1 : S;
		// Copy data forward
		std::memcpy(&data[S + i], &data[i], sizeof(T) * (e2 - i));

		if (e1 > S) {
			// Copy data backward from the doubled block to the main block
			std::memcpy(data, &data[S], sizeof(T) * (e1 - S));
		}
		end += n;
	}
	/** Returns a pointer to S consecutive elements for consumption
	If any data is consumed, call startIncr afterwards.
	*/