R: Next Power of 2

nextpow2 {pracma} | R Documentation

## Next Power of 2

### Description

Smallest power of 2 greater than the argument.

### Usage

      nextpow2(x)

### Arguments

`x` | numeric scalar, vector, or matrix

### Details

Computes the smalest integer `n` such that abs(x) ≤ 2^n. IF `x` is a vector or matrix, returns the result component-wise. For negative or complex values, the absolute value will be taken.

### Value

an integer `n` such that x ≤ 2^n.

### See Also

`pow2`

### Examples

      nextpow2(10)                   #=> 4
      nextpow2(1:10)                 #=> 0 1 2 2 3 3 3 3 4 4
      nextpow2(-2^10)                #=> 10
      nextpow2(.Machine$double.eps)  #=> -52

[Package pracma version 2.0.4 Index]