MATLAB: How to keep decimal float point only

formatMATLAB

I could not find any answer about this. So I have a float number (a=323.153), I wanna output look like this with keeping decimal point only:

>> a=323.

What format shall I use?

Thanks.

If it is just for display you can specify the output format in fprintf.

a = 323.153;
fprintf('<< a = %.0f.\n',a)

output:

<< a = 323.

Kind regards,

Robert

You can use an asterisk * to refer to an input of fprintf, so in your case all you need is:

fprintf("%.*f\n",x,float);

and tested:

>> chop(5,4.333352312)
4.3334

Of course if you want to return that string as an output argument you will need to use sprintf instead:

function s = chop(numdigits,float)
y = floor(log10(float)+1);
x = fix(numdigits - y);
s = sprintf("%.*f",x,float);
end

hex2dec(reshape('123446739FBCDE',2,[])')