createAndSetCImplementationReturn

Create implementation return argument from specified properties and add to implementation for code replacement table entry

Syntax

arg = createAndSetCImplementationReturn(hEntry,argType,varargin)

Description

arg = createAndSetCImplementationReturn(hEntry,argType,varargin) creates an implementation return argument from specified properties and adds the argument to the implementation for a code replacement table.

Implementation return arguments must describe fundamental numeric data types, such as double, single, int32, int16, int8, uint32, uint16, uint8, or boolean (not fixed-point data types).

Examples

Specify Operator Output and Input Arguments

This example shows how to use the createAndSetCImplementationReturn function with the createAndAddImplementationArg function to specify the output and input arguments for an operator implementation.

op_entry = RTW.TflCOperationEntry;
.
.
.
createAndSetCImplementationReturn(op_entry, 'RTW.TflArgNumeric', ...
    'Name',       'y1', ...
    'IOType',     'RTW_IO_OUTPUT', ...
    'IsSigned',   true, ...
    'WordLength', 32, ...
    'FractionLength', 0);
                                  
createAndAddImplementationArg(op_entry, 'RTW.TflArgNumeric',...
    'Name',       'u1', ...
    'IOType',     'RTW_IO_INPUT',...
    'IsSigned',   true,...
    'WordLength', 32, ...
    'FractionLength', 0 );
                               
createAndAddImplementationArg(op_entry, 'RTW.TflArgNumeric',...
    'Name',       'u2', ...
    'IOType',     'RTW_IO_INPUT',...
    'IsSigned',   true,...
    'WordLength', 32, ...
    'FractionLength', 0 );

Specify Types for Operator Implementation

These examples show some common type specifications using createAndSetCImplementationReturn.

hEntry = RTW.TflCOperationEntry;
.
.
.
% uint8:
createAndSetCImplementationReturn(hEntry, 'RTW.TflArgNumeric', ...
    'Name',           'y1', ... 
    'IOType',         'RTW_IO_OUTPUT', ...
    'IsSigned',       false, ...
    'WordLength',     8, ...
    'FractionLength', 0 );

% single:
createAndSetCImplementationReturn(hEntry, 'RTW.TflArgNumeric', ...
    'Name',         'y1', ... 
    'IOType',       'RTW_IO_OUTPUT', ...
    'DataTypeMode', 'single' );

% double:
createAndSetCImplementationReturn(hEntry, 'RTW.TflArgNumeric', ...
    'Name',         'y1', ... 
    'IOType',       'RTW_IO_OUTPUT', ...
    'DataTypeMode', 'double' );

% boolean:
createAndSetCImplementationReturn(hEntry, 'RTW.TflArgNumeric', ...
    'Name',         'y1', ... 
    'IOType',       'RTW_IO_OUTPUT', ...
    'DataTypeMode', 'boolean' );

Input Arguments

hEntry — Handle to a code replacement table entry

handle

The hEntry is a handle to a code replacement table entry previously returned by instantiating a code replacement entry class, such as hEntry = RTW.TflCFunctionEntry or hEntry = RTW.TflCOperationEntry.

Example: op_entry

argType — Specifies the argument type to create

'RTW.TflArgNumeric' | character vector | string scalar

The argType is a character vector or string scalar that specifies the argument type to create. Use 'RTW.TflArgNumeric' for numeric.

Example: 'RTW.TflArgNumeric'

varargin — Name-value pairs that specify the implementation return argument

name-value pairs

Example: 'Name','y1'

Name-Value Arguments

Specify optional comma-separated pairs of Name,Value arguments. Name is the argument name and Value is the corresponding value. Name must appear inside quotes. You can specify several name and value pair arguments in any order as Name1,Value1,...,NameN,ValueN.

Example: 'Name','y1'

Name — Specifies the argument name

character vector | string scalar

Example: 'Name','y1'

IOType — Specifies the I/O type of the argument

'RTW_IO_OUTPUT' | character vector | string scalar

Use 'RTW_IO_OUTPUT' for output.

Example: 'IOType','RTW_IO_OUTPUT'

IsSigned — Indicates whether the argument is signed

true (default) | false

Boolean value that, when set to true, indicates that the argument is signed. The default is true.

Example: 'IsSigned',true

WordLength — Specifies the word length, in bits, of the argument

16 (default) | integer

Example: 'WordLength',16

DataTypeMode — Specifies the data type mode of the argument

'Fixed-point: binary point scaling' (default) | 'Fixed-point: slope and bias scaling' | 'boolean' | 'double' | 'single'

You can specify either DataType (with Scaling) or DataTypeMode, but do not specify both.

Example: 'DataTypeMode','Fixed-point: binary point scaling'

DataType — Specifies the data type of the argument

'Fixed' (default) | 'boolean' | 'double' | 'single'

Example: 'DataType','Fixed'

Scaling — Specifies the data type scaling of the argument

'BinaryPoint' (default) | 'SlopeBias'

Use 'BinaryPoint' for binary-point scaling or 'SlopeBias' for slope and bias scaling.

Example: 'Scaling','BinaryPoint'

Slope — Specifies the slope for a fixed-point argument

1.0 (default) | floating-point value

You can optionally specify either this parameter or a combination of the SlopeAdjustmentFactor and FixedExponent parameters, but do not specify both.

Example: 'Slope',1.0

SlopeAdjustmentFactor — Specifies the slope adjustment factor (F) part of the slope, F2E, of the argument

1.0 (default) | floating-point value

You can optionally specify either the Slope parameter or a combination of this parameter and the FixedExponent parameter, but do not specify both.

Example: 'SlopeAdjustmentFactor',1.0

FixedExponent — Specifies the fixed exponent (E) part of the slope, F2E, of the argument

-15 (default) | integer value

You can optionally specify either the Slope parameter or a combination of this parameter and the SlopeAdjustmentFactor parameter, but do not specify both.

Example: 'FixedExponent',0

Bias — Specifies the bias of the argument

0.0 (default) | floating-point value

Example: 'Bias',0.0

FractionLength — Specifies the fraction length of the argument

15 (default) | integer value

Example: 'FractionLength',0

Output Arguments

arg — Handle to the created implementation return argument

handle

Specifying the return argument in the createAndSetCImplementationReturn function call is optional.