### Question:
OpBehaviorFloatNan extends UnaryOpBehavior { @Override public long evaluateUnary(int sizeout, int sizein, long in1) { FloatFormat format = FloatFormatFactory.getFloatFormat(sizein); return format.opNan(in1); } OpBehaviorFloatNan(); @Override long evaluateUnary(int sizeout, int sizein, long in1); @Override BigInteger evaluateUnary(int sizeout, int sizein, BigInteger in1);  }### Answer:
@Test public void testEvaluateBinaryLong() { OpBehaviorFloatNan op = new OpBehaviorFloatNan(); FloatFormat ff = FloatFormatFactory.getFloatFormat(8); Assert.assertEquals(1, op.evaluateUnary(1, 8, ff.getEncoding(Double.NaN))); Assert.assertEquals(0, op.evaluateUnary(1, 8, ff.getEncoding(0))); Assert.assertEquals(0, op.evaluateUnary(1, 8, ff.getEncoding(1.234))); }
@Test public void testEvaluateBinaryBigInteger() { OpBehaviorFloatNan op = new OpBehaviorFloatNan(); FloatFormat ff = FloatFormatFactory.getFloatFormat(8); Assert.assertEquals(BigInteger.ONE, op.evaluateUnary(1, 8, ff.getEncoding(FloatFormat.BIG_NaN))); Assert.assertEquals(BigInteger.ZERO, op.evaluateUnary(1, 8, ff.getEncoding(BigDecimal.ZERO))); Assert.assertEquals(BigInteger.ZERO, op.evaluateUnary(1, 8, ff.getEncoding(BigDecimal.valueOf(1.234d)))); }