44     return Double.isNaN(x);  in isNaN64()
81     expectFalse(isNaN64(Double.NEGATIVE_INFINITY));  in main()
86     expectFalse(isNaN64(Double.POSITIVE_INFINITY));  in main()
89     expectFalse(isNaN64(Double.longBitsToDouble(0x0008000000000000l)));  in main()
90     expectFalse(isNaN64(Double.longBitsToDouble(0x8008000000000000l)));  in main()
91     expectFalse(isNaN64(Double.longBitsToDouble(0x0000000000000001l)));  in main()
92     expectFalse(isNaN64(Double.longBitsToDouble(0x8000000000000001l)));  in main()
95     expectTrue(isNaN64(Double.NaN));  in main()
99       Double.longBitsToDouble(0x7ff0000000000001L),  in main()
100       Double.longBitsToDouble(0x7ff4000000000000L),  in main()
101       Double.longBitsToDouble(0x7ff8000000000000L),  in main()
102       Double.longBitsToDouble(0x7fffffffffffffffL),  in main()
103       Double.longBitsToDouble(0xfff0000000000001L),  in main()
104       Double.longBitsToDouble(0xfff4000000000000L),  in main()
105       Double.longBitsToDouble(0xfff8000000000000L),  in main()
106       Double.longBitsToDouble(0xffffffffffffffffL)  in main()