About "metavalue detected, returning FALSE" warning..

Hi, there:

I am getting a long list of this warning in my simulations ocurring at 0ps.
Code segments is down below.
Other simulation results are unaffected.

How do I remove this warning?

Thanks in advance!



# ** Warning: NUMERIC_STD.">": metavalue detected, returning FALSE
# Time: 0 ps Iteration: 1 Instance: /conv_vit_sim/i_vitb_dec/i_aem_0

library IEEE;
use IEEE.numeric_std.all;
use IEEE.std_logic_1164.all;
....
signal tmp_aem_0, tmp_aem_1, tmp_aem_2, tmp_aem_3 : unsigned(BW_AEM-1 downto
0);
....
cmp_u <= '1' when (tmp_aem_0 <= tmp_aem_1) else '0';
cmp_l <= '1' when (tmp_aem_2 <= tmp_aem_3) else '0';

G Iveco

G Iveco wrote:

> I am getting a long list of this warning in my simulations ocurring at 0ps.
> Code segments is down below.
> Other simulation results are unaffected.
> How do I remove this warning?

Initialize the testbench drive signal declarations.
These are all 'U' at time zero by default.

my_tb_sig : unsigned(BW_AEM-1 downto 0) := (others => '0');

-- Mike Treseler

Mike Treseler

G Iveco wrote:
> Hi, there:
>
> I am getting a long list of this warning in my simulations ocurring at 0ps.
> Code segments is down below.
> Other simulation results are unaffected.
>
> How do I remove this warning?

If you are using Modeltech, you can set NumericStdNoWarnings to "1" to
ignore these warnings.

In the VHDL-200X package, there is a "package generic" that allows you
to shut these off in your testbench.

David Bishop