C:\test>qnan
0000000000000000 :                       0 Positive zero (+0)
0000000000000001 :  4.940656458412465e-324 Positive denormalized
000fffffffffffff :  2.225073858507201e-308 Positive denormalized
0010000000000000 :  2.225073858507201e-308 Positive normalized non-zero
7fefffffffffffff :  1.797693134862316e+308 Positive normalized non-zero
7ff0000000000000 :                  1.#INF Positive infinity (+INF)
7ff0000000000001 :                 1.#SNAN Signaling NaN
7ff7ffffffffffff :                 1.#SNAN Signaling NaN
7ff8000000000000 :                 1.#QNAN Quiet NaN
7fffffffffffffff :                 1.#QNAN Quiet NaN
8000000000000000 :                      -0 Negative zero (-0)
8000000000000001 : -4.940656458412465e-324 Negative denormalized
800fffffffffffff : -2.225073858507201e-308 Negative denormalized
8010000000000000 : -2.225073858507201e-308 Negative normalized non-zero
ffefffffffffffff : -1.797693134862316e+308 Negative normalized non-zero
fff0000000000000 :                 -1.#INF Negative infinity (-INF)
fff0000000000001 :                -1.#SNAN Signaling NaN
fff7ffffffffffff :                -1.#SNAN Signaling NaN
fff8000000000000 :                 -1.#IND Quiet NaN
fff8000000000001 :                -1.#QNAN Quiet NaN
ffffffffffffffff :                -1.#QNAN Quiet NaN