Method bitRevX

ij/src/main/java/ij/process/FHT.java:388–394

(int  x, int bitlen)

	}

	private int bitRevX (int  x, int bitlen) {
		int  temp = 0;
		for (int i=0; i<=bitlen; i++)
			if ((x & (1<<i)) !=0)
				temp  |= (1<<(bitlen-i-1));
		return temp;
	}

	private int bset (int x, int bit) {
		x |= (1<<bit);