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Scaling

Effects of scaling on fixed-point arithmetic, binary-point only scaling, slope-bias scaling, scaling for speed, and scaling for maximum precision

The dynamic range of fixed-point numbers is much less than floating-point numbers with equivalent word sizes. To avoid overflow conditions and minimize quantization errors, fixed-point numbers must be scaled.

With the Fixed-Point Designer™ software, you can select a fixed-point data type whose scaling is defined by its binary point, or you can select an arbitrary linear scaling that suits your needs.

Topics

Scaling

The dynamic range of fixed-point numbers is much less than floating-point numbers with equivalent word sizes. To avoid overflow conditions and minimize quantization errors, fixed-point numbers must be scaled.

Compute Slope and Bias

Describes slope-bias scaling and how to compute it.

Recommendations for Arithmetic and Scaling

Scaling in your fixed-point design based on the limitations of fixed-point arithmetic.