The exponent is the component of a finite floating-point representation that signifies the integerpower
to which the radix is raised in determining the value of
that floating-point representation.

Within the IEEE 754-2008 framework, separate notation is used to specify the exponent in the case that the significand
is considered as a single integer digit and/or a fraction field versus the case that
the significand is viewed as an integer. In the prior case, the exponent is denoted
;
in the latter, it is denoted . These two notions are connected by the identity for the precision (IEEE Computer
Society 2008).

In floating-point arithmetic, special distinction is made with regards to the so-called "biased
exponents." A biased exponent is the result of adding to the exponent some
constant (called the bias) chosen to make the range of the exponent nonnegative.
Similarly, one often distinguishes preferred
exponents as well.