Method checkIndex

ij/src/main/java/ij/macro/Functions.java:801–804

(int index, int lower, int upper)

	}

	void checkIndex(int index, int lower, int upper) {
		if (index<lower || index>upper)
			interp.error("Index ("+index+") is outside of the "+lower+"-"+upper+" range");
	}

	void doRun() {
		interp.getLeftParen();