# nextpow2

## Purpose

Next power of two.

## Synopsis

    p = nextpow2(n)
    p = nextpow2(x)

## Description

`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))`.

## Examples

For any integer `n` in the range from `513` to `1024`, `nextpow2(n)` is `10`.

## See Also

    fft, log2, pow2

(c) Copyright 1994 by The MathWorks, Inc.