URJENT problem in fixed point output

[Altera_Forum]

sir i use fixed-pkg to represent fraction bits,but when the output is 0.05118,whose binary representation is something like 0.00001101,in waveform i get only 0.should i use float_pkg to get the correct output?:cry:

[Altera_Forum]

do you have enough fractional bits in your signal? 

and no, don't use float. without seeing the rest of your code we cant say what's wrong.

[Altera_Forum]

sir here is my code,plz suggest me.

[Altera_Forum]

How do you know in which step of the calculation the result is set to zero? I can't guess without knowing the component code.

[Altera_Forum]

@FvM sir, i am attaching the component.plz help.

[Altera_Forum]

The code has several length matching errors and doesn't compile. Also, what's the fpdiv component? 

 Assignments with length msimatch: p<= to_sfixed(i)*data_in; b<= (i*Pi); cv_q<=to_slv(b);

[Altera_Forum]

@ fvm sir, 

ihave taken i (2 downto 0,data_in (14 bits),so in multiplication result is 16 bits. as i take i an ufixednumber,so i convert in in sfixed.  now i take pi (ufixed(2 downto -7) ) so after multiplication it should be 6 downto -7,but i take b(b:ufixed(8 downto -8);) to match with the fixed point division 16 bit inputs. yep there is error,u r right,i will use correct range, other else.............. sir.