next up previous contents
Next: Number range Up: The IEEE standard Previous: Floating Point Types   Contents

Detailed IEEE representation

(for single precision standard; double is similar)

Signum. ``'' bit = 0 (positive) or 1 (negative).

Exponent. Biased representation, with an exponent bias of .

Mantissa. Hidden bit technique.

Numerical Value
  (ZERO or subnormal)
= if
  NaN otherwise

Note that , which implies that does not overflow.

Adrian Sandu 2001-08-26