Long-float operators

### Long-float operators

These `long-float` declared-numeric operators are defined in the `:gbbopen-tools` module:

 Operator Operation Example `\$\$\$` `the long-float` `(\$\$\$ x)` `+\$\$\$` `+` `(+\$\$\$ x y z)` `-\$\$\$` `-` `(-\$\$\$ x y z)` `1+\$\$\$` `1+` `(1+\$\$\$ x)` `1-\$\$\$` `1-` `(1-\$\$\$ x)` `*\$\$\$` `*` `(*\$\$\$ x y z)` `/\$\$\$` `/` `(/\$\$\$ x y z)` `=\$\$\$` `=` `(=\$\$\$ x y z)` `/=\$\$\$` `/=` `(/=\$\$\$ x y z)` `<\$\$\$` `<` `(<\$\$\$ x y z)` `<=\$\$\$` `<=` `(<=\$\$\$ x y z)` `>\$\$\$` `>` `(>\$\$\$ x y z)` `>=\$\$\$` `>=` `(>=\$\$\$ x y z)` `abs\$\$\$` `abs` `(abs\$\$\$ x)` `bounded-value\$\$\$` `bounded-value` `(bounded-value\$\$\$ x y z)` `ceiling\$\$\$` `ceiling` `(ceiling\$\$\$ x divisor)` `decf\$\$\$` `decf` `(decf\$\$\$ x delta)` `decf-\$\$\$after` `decf-after` `(decf\$\$\$-after x delta)` `decf/delete\$\$\$-acons` `decf/delete-acons` `(decf/delete\$\$\$-acons` `x delta alist)` `evenp\$\$\$` `evenp` `(evenp\$\$\$ x)` `fceiling\$\$\$` `fceiling` `(fceiling\$\$\$ x divisor)` `floor\$\$\$` `floor` `(floor\$\$\$ x divisor)` `ffloor\$\$\$` `ffloor` `(ffloor\$\$\$ x divisor)` `fround\$\$\$` `fround` `(fround\$\$\$ x divisor)` `ftruncate\$\$\$` `ftruncate` `(ftruncate\$\$\$ x divisor)` `incf\$\$\$` `incf` `(incf\$\$\$ x delta)` `incf\$\$\$-after` `incf-after` `(incf\$\$\$-after x delta)` `max\$\$\$` `max` `(max\$\$\$ x y z)` `min\$\$\$` `min` `(min\$\$\$ x y z)` `minusp\$\$\$` `minusp` `(minusp\$\$\$ x)` `mod\$\$\$` `mod` `(mod\$\$\$ x divisor)` `oddp\$\$\$` `oddp` `(oddp\$\$\$ x)` `plusp\$\$\$` `plusp` `(plusp\$\$\$ x)` `pushnew/incf\$\$\$-acons` `pushnew/incf-acons` `(pushnew/incf\$\$\$-acons` `'x delta alist)` `round\$\$\$` `round` `(round\$\$\$ x divisor)` `truncate\$\$\$` `truncate` `(truncate\$\$\$ x divisor)` `zerop\$\$\$` `zerop` `(zerop\$\$\$ x)`

The one-argument function coerce\$\$\$ provides convenient `long-float` coercion:

```  (setf x (coerce\$\$\$ x))
```

The GBBopen Project

 Long-float operators