How can I represent the ifft() by using sinc() function?

2017 6 12
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Lets say I have the signal:
x = [0, 0.5+0.8i, 1.8+0.3i, -2.3-1.3i];
Then the ifft(x) will give me:
ans = [-0.05i, -0.975+0.625i, 0.9+0.2i, 0.075-0.775i]
Is there any way to get the same result by using functions such as sinc(), filter(), etc. instead???
Thanks,

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