Fixed-Point Number Representation

numeric

Definition

Fixed-Point Number Representation

Fixed-point number representation is a method for representing decimal numbers on the computer.

Layout

Let $g$ be the bit length of the pre-comma part, and $m$ be the bit length of the post-comma part, then the total length of this fragment is:

$$\text{Bit Length}=1+g+m$$

The first bit denotes the sign of the represented number, where:

• $0$ means positive, and
• $1$ means negative.