Conversión de tipos de datos

Conversión de un tipo de datos a otro

La conversión es el cambio de un tipo de datos a otro. Fixed-Point Designer™ permite crear y optimizar tipos de datos que cumplen los requisitos de precisión numérica y las restricciones del hardware objetivo.

Temas

Parameter and Signal Conversions
Conversions of data types of parameters and signals in Simulink^® simulations.
Conversions and Arithmetic Operations
Example highlighting how the data types are converted and arithmetic operations are performed on inputs and parameters in the Simulink software.
Fixed-Point Arithmetic
Addition, subtraction, multiplication, casts, modulo, and two’s complement arithmetic.
Cast from Doubles to Fixed Point
Example based on the fxpdemo_dbl2fix model, which highlights many of the key features of the Fixed-Point Designer software.
Visualización de tipos de datos de puerto
Tres partes de la visualización del puerto de las señales de punto fijo: tipo de datos, número de bits y escalado.
fi Objects and C Integer Data Types
Comparison of ANSI C integer data type ranges, conversions, and exception handling with those of fi objects.
Cast fi Objects
Information on casting fi objects.

Ejemplos destacados

Double to Fixed-Point Conversion

How to convert signals between built-in and fixed-point data types and illustrates how fixed-point data types affect the representable precision and range. The fixed-point data type used in this model is fixdt(1,5,2), which is a signed 5-bit number with 2 bits to the right of the binary point:

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Fixed-Point to Fixed-Point Inherited Conversion

Use the Data Type Conversion block FixPt To FixPt Inherited. Because Simulink® propagates data types throughout a block diagram, fixed-point utility modeling can be templatized for multiple use scenarios. The data type inheritance capability can be given additional information through the use of various relative-type specifications. The FixPt To FixPt Inherited block provides a way to specify that "this signal should have the same fixed-point data type as that signal" by wiring it up to the signals of interest.

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