--- rpl/lapack/lapack/dgtsv.f 2010/01/26 15:22:45 1.1.1.1
+++ rpl/lapack/lapack/dgtsv.f 2018/05/29 07:17:54 1.18
@@ -1,9 +1,136 @@
+*> \brief DGTSV computes the solution to system of linear equations A * X = B for GT matrices
+*
+* =========== DOCUMENTATION ===========
+*
+* Online html documentation available at
+* http://www.netlib.org/lapack/explore-html/
+*
+*> \htmlonly
+*> Download DGTSV + dependencies
+*>
+*> [TGZ]
+*>
+*> [ZIP]
+*>
+*> [TXT]
+*> \endhtmlonly
+*
+* Definition:
+* ===========
+*
+* SUBROUTINE DGTSV( N, NRHS, DL, D, DU, B, LDB, INFO )
+*
+* .. Scalar Arguments ..
+* INTEGER INFO, LDB, N, NRHS
+* ..
+* .. Array Arguments ..
+* DOUBLE PRECISION B( LDB, * ), D( * ), DL( * ), DU( * )
+* ..
+*
+*
+*> \par Purpose:
+* =============
+*>
+*> \verbatim
+*>
+*> DGTSV solves the equation
+*>
+*> A*X = B,
+*>
+*> where A is an n by n tridiagonal matrix, by Gaussian elimination with
+*> partial pivoting.
+*>
+*> Note that the equation A**T*X = B may be solved by interchanging the
+*> order of the arguments DU and DL.
+*> \endverbatim
+*
+* Arguments:
+* ==========
+*
+*> \param[in] N
+*> \verbatim
+*> N is INTEGER
+*> The order of the matrix A. N >= 0.
+*> \endverbatim
+*>
+*> \param[in] NRHS
+*> \verbatim
+*> NRHS is INTEGER
+*> The number of right hand sides, i.e., the number of columns
+*> of the matrix B. NRHS >= 0.
+*> \endverbatim
+*>
+*> \param[in,out] DL
+*> \verbatim
+*> DL is DOUBLE PRECISION array, dimension (N-1)
+*> On entry, DL must contain the (n-1) sub-diagonal elements of
+*> A.
+*>
+*> On exit, DL is overwritten by the (n-2) elements of the
+*> second super-diagonal of the upper triangular matrix U from
+*> the LU factorization of A, in DL(1), ..., DL(n-2).
+*> \endverbatim
+*>
+*> \param[in,out] D
+*> \verbatim
+*> D is DOUBLE PRECISION array, dimension (N)
+*> On entry, D must contain the diagonal elements of A.
+*>
+*> On exit, D is overwritten by the n diagonal elements of U.
+*> \endverbatim
+*>
+*> \param[in,out] DU
+*> \verbatim
+*> DU is DOUBLE PRECISION array, dimension (N-1)
+*> On entry, DU must contain the (n-1) super-diagonal elements
+*> of A.
+*>
+*> On exit, DU is overwritten by the (n-1) elements of the first
+*> super-diagonal of U.
+*> \endverbatim
+*>
+*> \param[in,out] B
+*> \verbatim
+*> B is DOUBLE PRECISION array, dimension (LDB,NRHS)
+*> On entry, the N by NRHS matrix of right hand side matrix B.
+*> On exit, if INFO = 0, the N by NRHS solution matrix X.
+*> \endverbatim
+*>
+*> \param[in] LDB
+*> \verbatim
+*> LDB is INTEGER
+*> The leading dimension of the array B. LDB >= max(1,N).
+*> \endverbatim
+*>
+*> \param[out] INFO
+*> \verbatim
+*> INFO is INTEGER
+*> = 0: successful exit
+*> < 0: if INFO = -i, the i-th argument had an illegal value
+*> > 0: if INFO = i, U(i,i) is exactly zero, and the solution
+*> has not been computed. The factorization has not been
+*> completed unless i = N.
+*> \endverbatim
+*
+* Authors:
+* ========
+*
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
+*
+*> \date December 2016
+*
+*> \ingroup doubleGTsolve
+*
+* =====================================================================
SUBROUTINE DGTSV( N, NRHS, DL, D, DU, B, LDB, INFO )
*
-* -- LAPACK routine (version 3.2) --
+* -- LAPACK driver routine (version 3.7.0) --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-* November 2006
+* December 2016
*
* .. Scalar Arguments ..
INTEGER INFO, LDB, N, NRHS
@@ -12,63 +139,6 @@
DOUBLE PRECISION B( LDB, * ), D( * ), DL( * ), DU( * )
* ..
*
-* Purpose
-* =======
-*
-* DGTSV solves the equation
-*
-* A*X = B,
-*
-* where A is an n by n tridiagonal matrix, by Gaussian elimination with
-* partial pivoting.
-*
-* Note that the equation A'*X = B may be solved by interchanging the
-* order of the arguments DU and DL.
-*
-* Arguments
-* =========
-*
-* N (input) INTEGER
-* The order of the matrix A. N >= 0.
-*
-* NRHS (input) INTEGER
-* The number of right hand sides, i.e., the number of columns
-* of the matrix B. NRHS >= 0.
-*
-* DL (input/output) DOUBLE PRECISION array, dimension (N-1)
-* On entry, DL must contain the (n-1) sub-diagonal elements of
-* A.
-*
-* On exit, DL is overwritten by the (n-2) elements of the
-* second super-diagonal of the upper triangular matrix U from
-* the LU factorization of A, in DL(1), ..., DL(n-2).
-*
-* D (input/output) DOUBLE PRECISION array, dimension (N)
-* On entry, D must contain the diagonal elements of A.
-*
-* On exit, D is overwritten by the n diagonal elements of U.
-*
-* DU (input/output) DOUBLE PRECISION array, dimension (N-1)
-* On entry, DU must contain the (n-1) super-diagonal elements
-* of A.
-*
-* On exit, DU is overwritten by the (n-1) elements of the first
-* super-diagonal of U.
-*
-* B (input/output) DOUBLE PRECISION array, dimension (LDB,NRHS)
-* On entry, the N by NRHS matrix of right hand side matrix B.
-* On exit, if INFO = 0, the N by NRHS solution matrix X.
-*
-* LDB (input) INTEGER
-* The leading dimension of the array B. LDB >= max(1,N).
-*
-* INFO (output) INTEGER
-* = 0: successful exit
-* < 0: if INFO = -i, the i-th argument had an illegal value
-* > 0: if INFO = i, U(i,i) is exactly zero, and the solution
-* has not been computed. The factorization has not been
-* completed unless i = N.
-*
* =====================================================================
*
* .. Parameters ..