...
10.0  -ULP             9.9999999999999982        9.9999999999999982e+000           0x1.3ffffffffffffp+3       +0x1.3ffffffffffffp+0003    +0d1.2499999999999998p+0003
10.0                  10.0000000000000000        1.0000000000000000e+001           0x1.4000000000000p+3       +0x1.4000000000000p+0003    +0d1.2500000000000000p+0003
10.0  +ULP            10.0000000000000020        1.0000000000000002e+001           0x1.4000000000001p+3       +0x1.4000000000001p+0003    +0d1.2500000000000002p+0003

128.0 -ULP           127.9999999999999900        1.2799999999999999e+002           0x1.fffffffffffffp+6       +0x1.fffffffffffffp+0006    +0d1.9999999999999998p+0006
128.0                128.0000000000000000        1.2800000000000000e+002           0x1.0000000000000p+7       +0x1.0000000000000p+0007    +0d1.0000000000000000p+0007
128.0 +ULP           128.0000000000000300        1.2800000000000003e+002           0x1.0000000000001p+7       +0x1.0000000000001p+0007    +0d1.0000000000000002p+0007

1024.0-ULP          1023.9999999999999000        1.0239999999999999e+003           0x1.fffffffffffffp+9       +0x1.fffffffffffffp+0009    +0d1.9999999999999998p+0009
1024.0              1024.0000000000000000        1.0240000000000000e+003          0x1.0000000000000p+10       +0x1.0000000000000p+0010    +0d1.0000000000000000p+0010
1024.0+ULP          1024.0000000000002000        1.0240000000000002e+003          0x1.0000000000001p+10       +0x1.0000000000001p+0010    +0d1.0000000000000002p+0010

approx                            %30.16f                        %30.16e                             %a         to_hex_floatingpoint()         to_dec_floatingpoint()