NLFitqrsolve Method

public static void qrsolve(
	int n,
	double[] r,
	int ldr,
	int[] ipvt,
	double[] diag,
	double[] qtb,
	double[] x,
	double[] sdiag,
	double[] wa
)

Parameters

n  Int32

The number of variables.

r  Double

Upper triangular matrix R from a QR factorization (stored column-major).

ldr  Int32

Leading dimension of r.

ipvt  Int32

Permutation vector defining the pivoting.

diag  Double

Diagonal elements of the matrix D.

qtb  Double

The first n components of (Qᵀ)b.

x  Double

Output array that receives the solution vector.

sdiag  Double

Output array that receives the diagonal elements of the matrix S.

wa  Double

Working array of length n.

Reference