Hi i have this code that doesn't work:
library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.std_logic_arith.all;
use IEEE.std_logic_unsigned.all;
V_NEW_1 <= V_STORE_1 - GRAD_NORM_1;
where all are: SIGNAL std_logic_vector (7 down to 0)
and this warning:
There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, the result will be 'X'(es).
Someone can help me?
thanks
library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.std_logic_arith.all;
use IEEE.std_logic_unsigned.all;
V_NEW_1 <= V_STORE_1 - GRAD_NORM_1;
where all are: SIGNAL std_logic_vector (7 down to 0)
and this warning:
There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, the result will be 'X'(es).
Someone can help me?
thanks