Conversion from std_logic_vector to sfixed

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Hugo17

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Hello
I do have following signals:

Code: 
pos             : in std_logic_vector(15 downto 0) := (others => '0'); 

constant PtA    : real := 1.0;
signal ang      : sfixed(2*PtA_FP'high + 1 downto 2*PtA_FP'low);


Now I would like to multiply following expression with a type conversion to sfixed:

Code: 
ang <= PtA_FP * to_sfixed(signed(pos),PtA_FP'high,PtA_FP'low);


for some reason the value ang is wrong and I assume the type conversion from the pos to a to_sfixed is not correct. Can anyone tell me what goes wrong here? :bang:

Thanks in advance
 

to_sfixed can covert signed or std_logic_vector types to sfixed, so the signed conversion is not necessary
Without the error, not much more can say really, as it is possible - you must have an error elsewhere. Please post the whole code
 
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    Hugo17

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strange, but after I removed the 'signed' part it works and the conversion seems to be correct now!

Thanks for the fast answer :smile:
 

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