public MaskedLong shiftRight(MaskedLong n) {
		if (!n.isFullyDefined()) {
			throw new UnsupportedOperationException("Cannot right shift by an unknown amount");
		}
		return shiftRight(n.longValue());
	}
Shift the bits arithmetically {@code n} positions right

<p>
This implements a signed shift.

@param n the number of positions.
@return the result.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/assembler/sleigh/expr/MaskedLong.java