Computation

XML tag	<COMPU-INTERNAL-TO-PHYS> or <COMPU-PHYS-TO-INTERNAL>
Module	autosar.datatype
Inherits

Represents one computation (internal to physical, physical to internal). Contains a list of CompuScaleElement objects as well as an optional default value. Instances of this class are used as internal objects of CompuMethod.

Factory Methods

See CompuMethod.

Constructor

datatype.Computation([defaultValue = None])

参数

defaultValue (None, str, int or float) – Optional default value.

Attributes

Name	Type	Description
elements	str	List of CompuScaleElement
defaultValue	None, str, int, float	Optional default value

Public Properties

Name	Type	Access Type
lowerLimit	int, float	Get
upperLimit	int, float	Get

lowerLimit

Returns lowerLimit of first element. Raises KeyError if elements list is empty.

upperLimit

Returns upperLimit of first element. Raises KeyError if elements list is empty.

Public Methods

• createValueTable

• createRationalScaling

• createBitMask

Method Description

createValueTable

Computation.createValueTable(elements[, autoLabel = True])

参数

• elements (list) – Elements of new value table.

• autoLabel (bool) – Automatically create <SHORT-LABEL> for each element.

Creates a list of CompuScaleElements with text values.

When elements is a list of strings:

Creates one CompuScaleElement per list item and automatically calculates lower and upper limits.

When elements is a list of tuples:

If 2-tuple: First element is both lowerLimit and upperLimit, second element is textValue.

If 3-tuple: First element is lowerLimit, second element is upperLimit, third element is textValue.

createRationalScaling

Computation.createRationalScaling(offset, numerator, denominator, lowerLimit, upperLimit[, lowerLimitType = 'CLOSED'][, upperLimitType = 'CLOSED'][, label = None][, symbol = None][, adminData = None])

参数

• offset (int, float) – Scaling offset.

• numerator (int, float) – Scaling numerator.

• denominator (int, float) – Scaling denominator.

• lowerLimit (int, float) – lower limit.

• upperLimit (int, float) – upper limit.

• lowerLimitType (str) – lower limit type ('OPEN', 'CLOSED').

• upperLimitType (str) – upper limit type ('OPEN', 'CLOSED').

• label (None, str) – Optional label (used instead of name attribute).

• symbol (None, str) – Optional symbol name.

• adminData (AdminData) – AdminData.

Creates CompuScaleElement with it rational scaling properties.

createBitMask

Computation.createBitMask(elements[, autoLabel = True])

参数

• elements (list) – list of 2-tuples.

• autoLabel (bool) – Automatically create <SHORT-LABEL> for each element.

Creates a list of CompuScaleElements with text values.

The element parameter is expected to be a list tubles.

If 2-tuple: First element is both lowerLimit and upperLimit, second element is textValue.