SRC/cgbtrs.f(3)            Library Functions Manual            SRC/cgbtrs.f(3)

NAME
       SRC/cgbtrs.f

SYNOPSIS
   Functions/Subroutines
       subroutine cgbtrs (trans, n, kl, ku, nrhs, ab, ldab, ipiv, b, ldb,
           info)
           CGBTRS

Function/Subroutine Documentation
   subroutine cgbtrs (character trans, integer n, integer kl, integer ku,
       integer nrhs, complex, dimension( ldab, * ) ab, integer ldab, integer,
       dimension( * ) ipiv, complex, dimension( ldb, * ) b, integer ldb,
       integer info)
       CGBTRS

       Purpose:


           !>
           !> CGBTRS solves a system of linear equations
           !>    A * X = B,  A**T * X = B,  or  A**H * X = B
           !> with a general band matrix A using the LU factorization computed
           !> by CGBTRF.
           !>

       Parameters
           TRANS

           !>          TRANS is CHARACTER*1
           !>          Specifies the form of the system of equations.
           !>          = 'N':  A * X = B     (No transpose)
           !>          = 'T':  A**T * X = B  (Transpose)
           !>          = 'C':  A**H * X = B  (Conjugate transpose)
           !>

           N

           !>          N is INTEGER
           !>          The order of the matrix A.  N >= 0.
           !>

           KL

           !>          KL is INTEGER
           !>          The number of subdiagonals within the band of A.  KL >= 0.
           !>

           KU

           !>          KU is INTEGER
           !>          The number of superdiagonals within the band of A.  KU >= 0.
           !>

           NRHS

           !>          NRHS is INTEGER
           !>          The number of right hand sides, i.e., the number of columns
           !>          of the matrix B.  NRHS >= 0.
           !>

           AB

           !>          AB is COMPLEX array, dimension (LDAB,N)
           !>          Details of the LU factorization of the band matrix A, as
           !>          computed by CGBTRF.  U is stored as an upper triangular band
           !>          matrix with KL+KU superdiagonals in rows 1 to KL+KU+1, and
           !>          the multipliers used during the factorization are stored in
           !>          rows KL+KU+2 to 2*KL+KU+1.
           !>

           LDAB

           !>          LDAB is INTEGER
           !>          The leading dimension of the array AB.  LDAB >= 2*KL+KU+1.
           !>

           IPIV

           !>          IPIV is INTEGER array, dimension (N)
           !>          The pivot indices; for 1 <= i <= N, row i of the matrix was
           !>          interchanged with row IPIV(i).
           !>

           B

           !>          B is COMPLEX array, dimension (LDB,NRHS)
           !>          On entry, the right hand side matrix B.
           !>          On exit, the solution matrix X.
           !>

           LDB

           !>          LDB is INTEGER
           !>          The leading dimension of the array B.  LDB >= max(1,N).
           !>

           INFO

           !>          INFO is INTEGER
           !>          = 0:  successful exit
           !>          < 0:  if INFO = -i, the i-th argument had an illegal value
           !>

       Author
           Univ. of Tennessee


           Univ. of California Berkeley


           Univ. of Colorado Denver


           NAG Ltd.

       Definition at line 136 of file cgbtrs.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

LAPACK                          Version 3.12.0                 SRC/cgbtrs.f(3)