small numbers
╭────────┬─────────────────────────────────────╮
│ │ result class │
│ ├───────────────────┬─────────────────┤
│ │ general │ specific │
│ ├───────────────────┼─────────────────┤
│ │ sign │ sign │
│ ├─────────┬─────────┼────────┬────────┤
│exponent│ positive│ negative│positive│negative│
├────────┼─────────┼─────────┼────────┼────────┤
│0 │ 1.00│ 1.00│ -1.00│ -1.00│
│-1 │ .10│ .10│ -.10│ -.10│
│-2 │ .01│ .01│ -.01│ -.01│
│-3 │ .00│ .00│ .00│ .00│
│-4 │ .00│ .00│ .00│ .00│
│-5 │1.00E-005│1.00E-005│ .00│ .00│
│-6 │1.00E-006│1.00E-006│ .00│ .00│
│-7 │1.00E-007│1.00E-007│ .00│ .00│
│-8 │1.00E-008│1.00E-008│ .00│ .00│
│-9 │1.00E-009│1.00E-009│ .00│ .00│
╰────────┴─────────┴─────────┴────────┴────────╯