This version incorporates updates to testcases
for subnormal numbers (previous testcases included subnormals which were more
precise than allowed by IEEE 854), and also adds testcases for rounding
to-number conversions. The subnormal condition has been added,
and subnormal numbers may be rounded and/or inexact (in the latter case,
underflow is raised).
In this document:
The subnormal condition has been added.
The conversion underflow and
conversion overflow conditions have been removed (these
conditions now raise underflow or overflow, respectively).
The operand to the toSci and toEng operations is now
subject to rounding.