A `single-float`

is an immediate object in 64-bit LispWorks,

A `single-float`

is a boxed object in 32-bit LispWorks.

`single-float`

is disjoint from double-float in all LispWorks implementations, version 5.0 and later.

`single-float`

is disjoint from short-float in all 32-bit LispWorks implementations in version 5.0 and later. In 64-bit LispWorks `single-float`

is the same type as `short-float`

.

In LispWorks 4.4 and previous on Windows and Linux platforms,` single-float`

is the same type as `double-float`

. However, there are distinct specialized array types `(array single-float)`

, with single precision, and `(array double-float)`

, with double precision.

*LispWorks User Guide and Reference Manual - 13 Feb 2015*