Function lib::drot

pub fn drot(
    n: usize, 
    x: &mut [f64], 
    incx: usize, 
    y: &mut [f64], 
    incy: usize, 
    c: f64, 
    s: f64
) -> bool

Applies an f64 plane rotation to 2 n-element f64 vectors: x and y, with respective strides incx and incy.

$$\sqrt{a+b}$$