Fixed-Point Concepts

Quantization and fixed-point arithmetic

A fixed-point data type is characterized by the word length in bits, the position of the binary point, and whether it is signed or unsigned. The position of the binary point is the means by which fixed-point values are scaled and interpreted.

A common representation of a binary fixed-point number, either signed or unsigned, is shown in the following figure.

  • Quantization
    Discusses precision, range, and scaling of fixed-point data types
  • Fixed-Point Arithmetic
    How the software performs fixed-point arithmetic operations, effects of data type and scaling