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#! perl -slw
use strict;
...
    NEG_ZERO, NEG_DENORM_1ST, NEG_DENORM_LST, NEG_NORM_1ST, NEG_NORM_L
+ST,
    NEG_INF, NEG_SNAN_1ST, NEG_SNAN_LST,
    NEG_IND, NEG_QNAN_1ST, NEG_QNAN_LST;

C:\test>ieee.pl
                      0 : 0000000000000000
...
                -1.#IND : fff8000000000000
               -1.#QNAN : fff8000000000001
               -1.#QNAN : ffffffffffffffff

#include <stdio.h>
#include <float.h>
...
            FPClassAsText( _fpclass( asDouble( dblPatns[ i ] ) ) )
        );
}

C:\test>qnan
0000000000000000 :                       0 Positive zero (+0)
...
fff8000000000000 :                 -1.#IND Quiet NaN
fff8000000000001 :                -1.#QNAN Quiet NaN
ffffffffffffffff :                -1.#QNAN Quiet NaN