createAndAddConceptualArg

Create conceptual argument from specified properties and add to conceptual arguments for code replacement table entry

Syntax

arg = createAndAddConceptualArg(hEntry,argType,Name=Name,varargin)

Description

arg = createAndAddConceptualArg(hEntry,argType,Name=Name,varargin) creates a conceptual argument from specified properties and adds the argument to the conceptual arguments for a code replacement table entry.

Examples

Specify Conceptual Output and Input Arguments

This example shows how to use thecreateAndAddConceptualArg function to specify conceptual output and input arguments for a code replacement operator entry.

For examples of fixed-point arguments that use relative scaling or relative slope/bias values, see Net Slope Scaling Code Replacement and Equal Slope and Zero Net Bias Code Replacement.

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

Specify Types for Conceptual Argument

These examples show some common type specifications using createAndAddConceptualArg.

hEntry = RTW.TflCOperationEntry;
% .
% .
% .
% uint8:
createAndAddConceptualArg(hEntry, 'RTW.TflArgNumeric', ...
    'Name',           'u1', ... 
    'IOType',         'RTW_IO_INPUT', ...
    'Type',           'uint8');

% single:
createAndAddConceptualArg(hEntry, 'RTW.TflArgNumeric', ...
    'Name',         'u1', ... 
    'IOType',       'RTW_IO_INPUT', ...
    'Type',          'single' );

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

% boolean:
createAndAddConceptualArg(hEntry, 'RTW.TflArgNumeric', ...
    'Name',         'u1', ... 
    'IOType',       'RTW_IO_INPUT', ...
    'Type',         'boolean' );


% complex:
createAndAddConceptualArg(hEntry, 'RTW.TflArgNumeric', ...
    'Name',         'u1', ... 
    'IOType',       'RTW_IO_INPUT', ...
    'Type',         'cint16' );

% matrix of complex integers:
createAndAddConceptualArg(hEntry, 'RTW.TflArgMatrix', ... 
    'Name',       'mat_in1', ...
    'IOType',     'RTW_IO_INPUT', ...
    'BaseType',       'cint8', ...
    'DimRange',   [2 1; Inf Inf]);


% Fixed-point using binary-point-only scaling:
createAndAddConceptualArg(hEntry, 'RTW.TflArgNumeric', ...
    'Name',           'y1', ... 
    'IOType',         'RTW_IO_OUTPUT', ...
    'Type',           'fixdt(1,32,28)');

% Fixed-point using [slope bias] scaling:
createAndAddConceptualArg(hEntry, 'RTW.TflArgNumeric', ...
    'Name',           'y1', ... 
    'IOType',         'RTW_IO_OUTPUT', ...
    'Type',           'fixdt(1,16,15,2)');

Specify Type Properties for Conceptual Argument

These examples show how to specify types by using several properties of the data type.

hEntry = RTW.TflCOperationEntry;
% .
% .
% .
% uint8:
createAndAddConceptualArg(hEntry, 'RTW.TflArgNumeric', ...
    'Name',           'u1', ... 
    'IOType',         'RTW_IO_INPUT', ...
    'IsSigned',       false, ...
    'WordLength',     8, ...
    'FractionLength', 0 );

% single:
createAndAddConceptualArg(hEntry, 'RTW.TflArgNumeric', ...
    'Name',         'u1', ... 
    'IOType',       'RTW_IO_INPUT', ...
    'DataTypeMode', 'single' );

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

% boolean:
createAndAddConceptualArg(hEntry, 'RTW.TflArgNumeric', ...
    'Name',         'u1', ... 
    'IOType',       'RTW_IO_INPUT', ...
    'DataTypeMode', 'boolean' );

% Fixed-point using binary-point-only scaling:
createAndAddConceptualArg(hEntry, 'RTW.TflArgNumeric', ...
    'Name',           'y1', ... 
    'IOType',         'RTW_IO_OUTPUT', ...
    'CheckSlope',     true, ...
    'CheckBias',      true, ...
    'DataTypeMode',   'Fixed-point: binary point scaling', ...
    'IsSigned',       true, ...
    'WordLength',     32, ...
    'FractionLength', 28);

% Fixed-point using [slope bias] scaling:
createAndAddConceptualArg(hEntry, 'RTW.TflArgNumeric', ...
    'Name',           'y1', ... 
    'IOType',         'RTW_IO_OUTPUT', ...
    'CheckSlope',     true, ...
    'CheckBias',      true, ...
    'DataTypeMode',   'Fixed-point: slope and bias scaling', ...
    'IsSigned',       true, ...
    'WordLength',     16, ...
    'Slope',          15, ...
    'Bias',           2);

Specify a Matrix Argument

This example shows how to create an input argument that is a two-dimensional matrix of size 2-by-1 or larger and has base type uint8.

hEntry = RTW.TflCOperationEntry;
% .
% .
% .
createAndAddConceptualArg(hEntry, 'RTW.TflArgMatrix', ... 
    'Name',       'mat_in1', ...
    'IOType',     'RTW_IO_INPUT', ...
    'DimRange',   [2 1; Inf Inf], ...
    'BaseType',   'uint8');

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 table entry class, such as hEntry = RTW.TflCFunctionEntry or hEntry = RTW.TflCOperationEntry.

Example: op_entry

argType — Specifies the argument type to create

character vector | string scalar

Argument type to create, specified as a character vector or string scalar. Specify one of these types of arguments.

• 'RTW.TflArgNumeric' — numeric argument

• 'RTW.TflArgMatrix' — matrix argument

• 'RTW.TflArgComplex' — complex argument

• 'RTW.TflArgChar' — character argument

• 'RTW.TflArgVoid' — void argument

Name — Name of the argument to create

character vector | string scalar

Name of the argument to create, specified as a character vector or string scalar. For input arguments, the name must be 'u1', 'u2', or follow the format 'un'. For output arguments, the name must be 'y1', 'y2', or follow the format 'yn'.

Example: 'Name','y1'

Example: 'Name','u1'

varargin — Name-value pair arguments that specify the conceptual argument

name-value pair

Example: 'IOType','RTW_IO_INPUT'

Name-Value Arguments

Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

Before R2021a, use commas to separate each name and value, and enclose Name in quotes.

Example: 'IOType','RTW_IO_INPUT'

IOType — Specifies the I/O type of the argument

'RTW_IO_INPUT' (default) | 'RTW_IO_OUTPUT'

Use value 'RTW_IO_INPUT' for input or value 'RTW_IO_OUTPUT'.

Example: 'IOType','RTW_IO_INPUT'

Type — Data type of the argument

character vector | string scalar

Data type of the argument, specified as a character vector or string scalar. You can specify built-in MATLAB data types such as uint8, boolean, double, and others. You can also specify data types that you create by using the fixdt function, such as fixdt(1,16,2). When you specify the Type, you do not need to specify other properties of the type, such as the signedness or word length.

Example: 'Type','uint8'

Example: 'Type','fixdt(1,16,2)'

IsSigned — Indicates whether the argument is signed

true (default) | false

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

Example: 'IsSigned',true

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

16 (default) | integer

Integer specifying the word length, in bits, of the argument. The default is 16.

Example: 'WordLength',16

CheckSlope — Selects whether to check that the slope value of the argument exactly matches the call-site slope value

true (default) | false

Boolean flag that, when set to true for a fixed-point argument, causes code replacement request processing to check that the slope value of the argument exactly matches the call-site slope value.

Specify true if you are matching a specific [slope bias] scaling combination or a specific binary-point-only scaling combination on fixed-point operator inputs and output. Specify false if you are matching relative scaling or relative slope and bias values across fixed-point operator inputs and output.

Example: 'CheckSlope',true

CheckBias — Selects whether to check that the bias value of the argument exactly matches the call-site bias value

true (default) | false

Boolean flag that, when set to true for a fixed-point argument, causes code replacement request processing to check that the bias value of the argument exactly matches the call-site bias value.

Specify true if you are matching a specific [slope bias] scaling combination or a specific binary-point-only scaling combination on fixed-point operator inputs and output. Specify false if you are matching relative scaling or relative slope and bias values across fixed-point operator inputs and output.

Example: 'CheckBias',true

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'

Specify the data type scaling of the argument as 'BinaryPoint' for binary-point scaling or 'SlopeBias' for slope and bias scaling.

Example: 'Scaling','BinaryPoint'

Slope — Specifies the slope of the argument

1 (default) | floating-point value

If you are matching a specific [slope bias] scaling combination on fixed-point operator inputs and output, specify either this parameter or a combination of the SlopeAdjustmentFactor and FixedExponent parameters.

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

If you are matching a specific [slope bias] scaling combination on fixed-point operator inputs and output, specify either the Slope parameter or a combination of this parameter and the FixedExponent parameter.

Example: 'SlopeAdjustmentFactor',1.0

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

-15 (default) | integer value

If you are matching a specific [slope bias] scaling combination on fixed-point operator inputs and output, specify either the Slope parameter or a combination of this parameter and the SlopeAdjustmentFactor parameter.

Example: 'FixedExponent',-15

Bias — Specifies the bias of the argument

0.0 (default) | floating-point value

Specify this parameter if you are matching a specific [slope bias] scaling combination on fixed-point operator inputs and output.

Example: 'Bias',2.0

FractionLength — Specifies the fraction length for the argument

15 (default) | integer value

Specify this parameter if you are matching a specific binary-point-only scaling combination on fixed-point operator inputs and output.

Example: 'FractionLength',15

BaseType — Specifies the base data type for which a matrix argument is valid

character vector | string scalar

Example: 'BaseType','double'

DimRange — Specifies the dimensions for which a matrix argument is valid

matrix dimensions

You can also specify a range of dimensions specified in the format [Dim1Min Dim2Min ... DimNMin; Dim1Max Dim2Max ... DimNMax]. For example, [2 2; inf inf] means a two-dimensional matrix of size 2x2 or larger.

Example: 'DimRange',[2 2]

Output Arguments

arg — Handle to the created conceptual argument

handle

The arg is a handle to the created conceptual argument. Specifying the return argument in the createAndAddConceptualArg function call is optional.

Version History

Introduced in R2007b

R2023b: Specify pre-defined data types by using the Type argument

You can now specify pre-defined data types for the argument by using the Type argument. Specify built-in MATLAB data types or fixed-point data types. When you use the Type argument, you do not need to specify other properties of the data type such as IsSigned or WordLength.