Function rgsl::linear_algebra::QR_QRsolve

pub fn QR_QRsolve(
    q: &mut MatrixF64, 
    r: &mut MatrixF64, 
    b: &VectorF64, 
    x: &mut VectorF64
) -> Value

This function solves the system R x = Q^T b for x. It can be used when the QR decomposition of a matrix is available in unpacked form as (Q, R).