It is intended that an implementation of a floating-point system
conforming to this standard can be realized entirely in software,
entirely in hardware, or in any combination of software and
hardware. It is the environment the programmer or user of the
system sees that conforms or fails to conform to this standard.
Hardware components that require software support to conform shall
not be said to conform apart from such software.
This standard specifies the following:
1) Constraints on parameters defining values of basic and
extended floating-point numbers