D2a. Solution of systems of linear equations (general matrices) - Driver routines

Functions
Sub	Dgbsv (N As Long, Kl As Long, Ku As Long, Ab() As Double, IPiv() As Long, B() As Double, Info As Long, Optional Nrhs As Long=1)
	(Simple driver) Solution to system of linear equations AX = B for a general band matrix
Sub	Dgbsvx (Fact As String, Trans As String, N As Long, Kl As Long, Ku As Long, Ab() As Double, Afb() As Double, IPiv() As Long, Equed As String, R() As Double, C() As Double, B() As Double, X() As Double, RCond As Double, FErr() As Double, BErr() As Double, Info As Long, Optional Nrhs As Long=1, Optional RPiv As Double)
	(Expert driver) Solution to system of linear equations AX = B for a general band matrix
Sub	Dgesv (N As Long, A() As Double, IPiv() As Long, B() As Double, Info As Long, Optional Nrhs As Long=1)
	(Simple driver) Solution to system of linear equations AX = B for a general matrix
Sub	Dgesvx (Fact As String, Trans As String, N As Long, A() As Double, Af() As Double, IPiv() As Long, Equed As String, R() As Double, C() As Double, B() As Double, X() As Double, RCond As Double, FErr() As Double, BErr() As Double, Info As Long, Optional Nrhs As Long=1, Optional RPiv As Double)
	(Expert driver) Solution to system of linear equations AX = B for a general matrix
Sub	Dgtsv (N As Long, Dl() As Double, D() As Double, Du() As Double, B() As Double, Info As Long, Optional Nrhs As Long=1)
	(Simple driver) Solution to system of linear equations AX = B for a general tridiagonal matrix
Sub	Dgtsvx (Fact As String, Trans As String, N As Long, Dl() As Double, D() As Double, Du() As Double, Dlf() As Double, Df() As Double, Duf() As Double, Du2() As Double, IPiv() As Long, B() As Double, X() As Double, RCond As Double, FErr() As Double, BErr() As Double, Info As Long, Optional Nrhs As Long=1)
	(Expert driver) Solution to system of linear equations AX = B for a general tridiagonal matrix
Sub	Dsgesv (N As Long, A() As Double, IPiv() As Long, B() As Double, X() As Double, Iter As Long, Info As Long, Optional Nrhs As Long=1)
	(Simple driver) Solution to system of linear equations AX = B for a general matrix (mixed precision with iterative refinement)

Detailed Description

This is the group of D2a. Solution of systems of linear equations (general matrices) - Driver routines.