R: Base 2 Power

pow2 {pracma} | R Documentation

## Base 2 Power

### Description

Power with base 2.

### Usage

      pow2(f, e)

### Arguments

`f` | numeric vector of factors
`e` | numeric vector of exponents for base 2

### Details

Computes the expression `f * 2^e`, setting `e` to `f` and `f` to 1 in case `e` is missing. Complex values are only processed if `e` is missing.

### Value

Returns a numeric vector computing f\,2^e.

### See Also

`nextpow2`

### Examples

      pow2(c(0, 1, 2, 3))                   #=> 1 2 4 8
      pow2(c(0, -1, 2, 3), c(0,1,-2,3))     #=> 0.0 -2.0  0.5 24.0
      pow2(1i)                              #=> 0.7692389+0.6389613i

[Package pracma version 2.0.4 Index]