Fixed point converter: Ignore code part.

I am using the HDL Coder and escape an Inputparser with

if coder.target('MATLAB')
    p = inputParser;
    %...Inputparser Stuff
    addOptional(p, 'variable', 'default', @(x)ischar(x));
    %...Inputparser Stuff
else
    %if nargin = ...
end

The C Coder gets through the code fine, but the fixed-point converter does not skip the coder.target('MATLAB') code.

'@(x)ischar(x)' is an anonymous function. Anonymous functions are not supported for fixed-point conversion.

Is there any possibility to tell the fixed point converter to skip these lines?

[Kiran Kintali]

Can you share the design and the project?

Thanks

[Jan Siegmund]

The Code is confidential, however here is a minimal working example:

Run hdltest.m through the HDL coder and specify input a as int32(1x1).

File: hdltest.m

function [result] = hdltest(a)
    result = simple_add(a,1,2);
end

File: simple_add.m

function [result] = simple_add(a,varargin)
    if coder.target('MATLAB')
        p = inputParser;
        addRequired(p, 'a', @(x)~isempty(x) && isscalar(x));
        addOptional(p, 'b', 0, @(x)~isempty(x) && isscalar(x));
        addOptional(p, 'c', 0, @(x)~isempty(x) && isscalar(x));
        parse(p, a, varargin{:});
        b = p.Results.b;
        c = p.Results.c;
    else
        b = 0;
        if nargin>1
            b = varargin{1};
        end
        c = 0;
        if nargin>2
            c = varargin{2};
        end
    end
    
    result = a + b + c;
end

Result in MATLAB 2019b:

'@(x)~isempty(x) && isscalar(x)' is an anonymous function. Anonymous functions are not supported for fixed-point conversion.

[Jan Siegmund]

Note: in the original code, b and c are dependent on constants (configuration strings), so the minimal example represents pretty well what we are trying to achieve.

[Kiran Kintali]

We have noted the enhancement to ignore coder.target('MATLAB') during fixed-point conversion. Thanks for the representative sample code.

[Jan Siegmund]

Thank you.

Answer 1

[Jan Siegmund]

Ignoring a code part in fixed point converter is currenty(R2019b) not supported.

Comment out the section as a temporary fix.