Function rgsl::linear_algebra::QRPT_Rsolve

pub fn QRPT_Rsolve(
    qr: &MatrixF64, 
    p: &Permutation, 
    b: &VectorF64, 
    x: &mut VectorF64
) -> Value

This function solves the triangular system R P^T x = b for the N-by-N matrix R contained in QR.