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Linear Least Squares (LLS) Problems: LAPACK Driver Routines

This
topic
describes LAPACK driver routines used for solving linear least squares problems. Table
"Driver Routines for Solving LLS Problems"
lists all such routines.
Driver Routines for Solving LLS Problems
Routine Name
Operation performed
Uses QR or LQ factorization to solve a overdetermined or underdetermined linear system with full rank matrix.
Computes the minimum-norm solution to a linear least squares problem using a complete orthogonal factorization of A.
Computes the minimum-norm solution to a linear least squares problem using the singular value decomposition of A.
Computes the minimum-norm solution to a linear least squares problem using the singular value decomposition of A and a divide and conquer method.

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