Hi,
When I am experimenting in converting matlab code into vhdl with hdl coder, I am getting the error such as Function 'log' is not defined for values of class 'embedded.fi' or Function 'exp' is not defined for values of class 'embedded.fi'.
The specific block of code comes from the block:
f_0 = fi( 0, 0, 1, 0, fm ); % 133.33333;
f_sp = fi( 200*fi( 1/3, 0, 14, 15 ), 0, 14, 7, fm ); % 66.66667;
brkfrq = fi( 1000, 0, 11, 0, fm ); brkpt = fi( fi_div( (brkfrq - f_0), f_sp ), 0, 14, 10, fm ); logstep = fi( 1.0711703, 0, 14, 13, fm ); linpts = (f<brkfrq); z = fi( fi( 0, 0, 1, 0 )*f, 0, 6, 0, fm ); z( linpts ) = fi( fi_div( (f( linpts ) - f_0), f_sp ), 0, 6, 0, fm ); % error with line below.
z( ~(linpts~=0) ) = fi( brkpt + (log( fi_div( f( ~(linpts~=0) ), brkfrq ) )) ./ log( logstep ), 0, 6, 0, fm );
The original matlab code is from audspec.m of rastamat. I have tried converting fixed point to double before calling log(), but then another error pops up.
Thanks,
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