p = nextpow2(n)
p = nextpow2(x)
p = nextpow2(n)
returns the first p
such that 2^p >= abs(n)
. It is often useful for finding the nearest power of two sequence length for FFT operations.
p = nextpow2(x)
, where x
is a vector, is nextpow2(length(x))
.
n
in the range from 513
to 1024
, nextpow2(n)
is 10
.
fft
,log2
,pow2
(c) Copyright 1994 by The MathWorks, Inc.