我正在尝试对一段 vhdl 代码中的整数进行一些数学运算,但是当我尝试编译该工具时,会显示“运算符的 0 定义“+”在此处匹配”。这是我正在尝试做的事情:
for i in 0 to arr_size - 1 loop
for j in 0 to arr_size - 1 loop
for k in 0 to arr_size - 1 loop
for l in 0 to arr_size - 1 loop
for m in 0 to arr_size - 1 loop
mega_array(i)(j)(k)(l)(m) <= i*(arr_size**4) + j*(arr_size**3) + k*(arr_size**2) + l*(arr_size**1) + m*(arr_size**0);
end loop;
end loop;
end loop;
end loop;
end loop;
在设置了 mega_array 的行中遇到了问题。请注意,整个块都在一个进程中。
此外:
arr_size : integer := 4;
sig_size : integer := 32
type \1-line\ is array (arr_size - 1 downto 0) of unsigned (sig_size - 1 downto 0);
type square is array (arr_size - 1 downto 0) of \1-line\;
type cube is array (arr_size - 1 downto 0) of square;
type hypercube is array (arr_size - 1 downto 0) of cube;
type \5-cube\ is array (arr_size - 1 downto 0) of hypercube;
signal mega_array : \5-cube\;