How to remove the error 'the combination of fixed point and floating point is not supported'?

I want to convert matlab function to vhdl.

the function is mod.

During fixed point conversion it gives the above error with a redmark on the bold words in following line:

y = fi( mod( u, 2*pi ), 0, 14, 23, fm);

how to remove this error?

Answer 1

[Walter Roberson]

My guess is that "u" is fixed point type. pi is a floating point type, and you probably cannot use mod() of a fixed point value with respect to a floating point value.

The fix, if I am right:

TwoPi = fi(2*Pi, 0, 14, 23, fm);
y = mod(u, TwoPi);