Rounding off and approximation functions.

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Reinhardt RADING
Reinhardt RADING 2021-4-20
评论： Steven Lord 2021-4-20
I have a matlab formula i.e,
Nsymb = (abs(Dcum)*deltaf(sp)*(lam^2)* Symbolrate* 1e-3)/clight
The value of Nysmb varies i.e 14, 10, 28, 36..
I would love to round off to the nearest power factor of 2. For example if Nsymb from the formula is 14, i want to write the code to make Nsymb = 16.
If Nysmb from the formula is 28, i want to make Nsymb =32... if 36, Nsymb=64.. so on.
How can i do this?
Thanks in advance.
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the cyclist
the cyclist 2021-4-20
Maybe I have not had enough coffee yet, but why would 36 round to 64? It is much closer to 32.
Or do you mean ceiling, and not round? Or maybe just a typo in your question?

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采纳的回答

Steven Lord
Steven Lord 2021-4-20
Ran in:
N = 14;
x = 2.^nextpow2(N)
x = 16
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Steven Lord
Steven Lord 2021-4-20
Always a new MATLAB function to know.
Cool, you're one of today's ten thousand to learn about this 20+ year old function.

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