Method initializeTables

ij/src/main/java/ij/process/FHT.java:205–211

(int maxN)

	}
	
	void initializeTables(int maxN) {
	    if (maxN>0x40000000)
	        throw new  IllegalArgumentException("Too large for FHT:  "+maxN+" >2^30");
		makeSinCosTables(maxN);
		makeBitReverseTable(maxN);
		tempArr = new float[maxN];
	}

	void makeSinCosTables(int maxN) {
		int n = maxN/4;