Digital Number Representation
In digital hardware, binary numbers are represented as either fixed-point or floating-point data types. Understanding how different data types are defined and represented in hardware can help you to choose data types that are appropriate for your application.
Topics
General
Physical Quantities and Measurement Scales
Overview of measurement scales and representing numbers.
Benefits of Fixed-Point Hardware
Fixed-point hardware can provide benefits in size and power consumption, memory usage, speed, and cost.
Data Types and Scaling in Digital Hardware
Provides an overview of data types and scaling in digital hardware.
Data types supported for simulation and code generation.
Fixed-Point
Fixed-point data types representation.
A weighted sum of bits represents the quantization of a real-world value.
Fixed-Point Numbers in Simulink
Fixed-point data type and scaling notation used in Simulink®.
numerictype of Fixed-Point Objects
Fields and settings for the numerictype object.
Fixed-Point Versus Built-in Integer Types
Differences between fixed-point data types and built-in integer data types in MATLAB®.
Fraction Lengths and Fixed-Point Numbers
Definitions for negative fraction length and fraction length greater than word length.
Floating-Point
Representation and manipulation of floating-point numbers.
Hybrids between floating-point and fixed-point numbers, which are stored by Fixed-Point Designer™ as doubles.
