Base 2 Power

Power with base 2.

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