how can delay give in nano or pico seconds ?

Hi. I am giving delay to clock in mili, nano, pico seconds. Actually the clock timing value is let say 0.02 , if I attach variable transport delay block after the clock with 3m sec then my sampler sample the input at 0.023 which is fine. but when I give delay 3n sec or 3p sec then it makes the value same 0.02 (no affect of delay) or assume that small delay to 0.

Basically, I am working on nano and pico seconds. so it's very impportant to consider even small delay. How can I do this any one can help in this regard please ? I attached the the snap and delay code below:

function y fcn(count)

persistent p;

persistent j;

if isempty(p) % Initialization

p=0.3e-3;

%p=3e-9;

end

if isempty(j) % Initialization

j=-1;

end

step_size=0.1e-3 %% Initialization

%step_size=1e-9 %% Initialization

if(count<=j)

p=p - step_size;

j=j-1;

end

y = p;

Thanks

[Jan]

I do not understand, what your problem is.

x = 0.02 - 1e-9
fprintf('%.16g\n', x)

You see that the results differs from 0.02. Maybe you use disp to show the values? Then increase the number of displayed digits:

format long g
0.02 - 1e-9

This is not a more accurate calculation, but only less rounding for the display in the command window.

[Sarfaraz Ahmed]

Thanks Jan. I will look by setting long format.