# veriloga bug : laplace function does not support ac analysis

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#### nus_lin

##### Member level 1
hello, guys.

i just found that if any branch is defined by laplace function, then its contribution will be ignored during ac analysis. can you tell me how to solve this problem?

example:

include "constants.vams"
include "disciplines.vams"

module S_gm(Vi,Vo);

inout Vi,Vo;
electrical Vi,Vo;

analog begin

V(Vo) <+ laplace_np(V(Vi),{1},{-p1,0});

end

endmodule

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