Function rgsl::linear_algebra::QR_Rsvx

pub fn QR_Rsvx(qr: &MatrixF64, x: &mut VectorF64) -> Value

This function solves the triangular system R x = b for x in-place. On input x should contain the right-hand side b and is replaced by the solution on output. This function may be useful if the product b’ = Q^T b has already been computed using gsl_linalg_QR_QTvec.