D9a. Overdetermined or underdetermined systems of linear equations (unconstrained) (complex)

Functions
Sub	Zgecov (Job As Long, N As Long, A() As Complex, Ci() As Complex, Info As Long)
	Unscaled covariance matrix of linear least squares problem solved by Zgels
Sub	Zgecovs (Job As Long, N As Long, A() As Complex, S() As Double, Ci() As Complex, Info As Long)
	Unscaled covariance matrix of linear least squares problem solved by Zgelss
Sub	Zgecovy (Job As Long, N As Long, A() As Complex, Jpvt() As Long, Ci() As Complex, Info As Long)
	Unscaled covariance matrix of linear least squares problem solved by Zgelsy
Sub	Zgels (Trans As String, M As Long, N As Long, A() As Complex, B() As Complex, Info As Long, Optional Nrhs As Long=1)
	Solution to overdetermined or underdetermined linear equations Ax = b for complex matrices (full rank)
Sub	Zgelsd (M As Long, N As Long, A() As Complex, B() As Complex, S() As Double, RCond As Double, Rank As Long, Info As Long, Optional Nrhs As Long=1)
	Solution to overdetermined or underdetermined linear equations Ax = b for complex matrices using the singular value decomposition (SVD) (Divide and conquer method)
Sub	Zgelss (M As Long, N As Long, A() As Complex, B() As Complex, S() As Double, RCond As Double, Rank As Long, Info As Long, Optional Nrhs As Long=1)
	Solution to overdetermined or underdetermined linear equations Ax = b for complex matrices using the singular value decomposition (SVD)
Sub	Zgelsy (M As Long, N As Long, A() As Complex, B() As Complex, Jpvt() As Long, RCond As Double, Rank As Long, Info As Long, Optional Nrhs As Long=1)
	Solution to overdetermined or underdetermined linear equations Ax = b for complex matrices using a complete orthogonal factorization
Sub	Zgetsls (Trans As String, M As Long, N As Long, A() As Complex, B() As Complex, Info As Long, Optional Nrhs As Long=1)
	Solution to overdetermined or underdetermined linear equations Ax = b for complex matrices (Full rank) (Tall skinny QR or short wide LQ factorization)

Detailed Description

This is the group of D9a. Overdetermined or underdetermined systems of linear equations (unconstrained) (complex).