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timescale mismatch

Hi,

Does anybody know why the function in the code below is behaving differently when the input is a constant or a variable?

I understand that time literal is of type 'realtime' and not 'time'. My complain is that the function has a different behavior depending on the return type.

I'm using Incisive version 12.20.020

code:

---

`timescale 1ns/100ps

module test;

time time_var;

initial begin

$timeformat(-9, 0, " ns", 6);

time_var = time_func(1us);

void_func(1us);

$finish;

end

function time time_func (input time in_time);

$display("we are in time_func, in_time = %0t",in_time);

return in_time;

endfunction

function void void_func (input time in_time);

$display("we are in void_func, in_time = %0t",in_time);

endfunction

endmodule

----

output:

we are in time_func, in_time = 100 ns

we are in void_func, in_time = 1000 ns

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