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Definitions of "quantum" and "preferred exponent"
The definition of "quantum" in the draft 1.4.0 seems to be wrong:
quantum: The quantum of a finite floating-point representation is
the value of a unit in the last position of its significand. This
is equal to the radix raised to the exponent q.
This is proportional to the radix raised to the exponent q (when the
precision is fixed), but not equal.
The definition of "preferred exponent" is also strange (what does
"which best preserves the quantum of the operands" mean?).
--
Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <http://www.vinc17.org/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.org/blog/>
Work: CR INRIA - computer arithmetic / Arenaire project (LIP, ENS-Lyon)