Rotate circuitry operable to perform rotate operations on various size operands including preconditioning circuitry (10) for duplicating an operand a predetermined number of times to form a preconditioned word. The rotate operation is performed by shifter (22) which shifts the preconditioned word by...http://www.google.fr/patents/US5379240?utm_source=gb-gplus-shareBrevet US5379240 - Shifter/rotator with preconditioned data
