delay error

i have voltage signal when i make it delay then subtract it from each other is suppose give zero but it give zero for some point and 7e-15 for other point and this make me problem coz i put output to switch to detected zero pass.
any one know how make it ignore 7e-15 value and make it feel like zero

回答(1 个)

Wayne King
Wayne King 2011-12-20

0 个投票

You can always use a tolerance in your code.
tol = 1e-12; if (abs(x)< tol)
end
Or whatever you want the tolerance to be.

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