TESTING/EIG/sbdt02.f(3)    Library Functions Manual    TESTING/EIG/sbdt02.f(3)

NAME
       TESTING/EIG/sbdt02.f

SYNOPSIS
   Functions/Subroutines
       subroutine sbdt02 (m, n, b, ldb, c, ldc, u, ldu, work, resid)
           SBDT02

Function/Subroutine Documentation
   subroutine sbdt02 (integer m, integer n, real, dimension( ldb, * ) b,
       integer ldb, real, dimension( ldc, * ) c, integer ldc, real, dimension(
       ldu, * ) u, integer ldu, real, dimension( * ) work, real resid)
       SBDT02

       Purpose:


           !>
           !> SBDT02 tests the change of basis C = U**H * B by computing the
           !> residual
           !>
           !>    RESID = norm(B - U * C) / ( max(m,n) * norm(B) * EPS ),
           !>
           !> where B and C are M by N matrices, U is an M by M orthogonal matrix,
           !> and EPS is the machine precision.
           !>

       Parameters
           M

           !>          M is INTEGER
           !>          The number of rows of the matrices B and C and the order of
           !>          the matrix Q.
           !>

           N

           !>          N is INTEGER
           !>          The number of columns of the matrices B and C.
           !>

           B

           !>          B is REAL array, dimension (LDB,N)
           !>          The m by n matrix B.
           !>

           LDB

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

           C

           !>          C is REAL array, dimension (LDC,N)
           !>          The m by n matrix C, assumed to contain U**H * B.
           !>

           LDC

           !>          LDC is INTEGER
           !>          The leading dimension of the array C.  LDC >= max(1,M).
           !>

           U

           !>          U is REAL array, dimension (LDU,M)
           !>          The m by m orthogonal matrix U.
           !>

           LDU

           !>          LDU is INTEGER
           !>          The leading dimension of the array U.  LDU >= max(1,M).
           !>

           WORK

           !>          WORK is REAL array, dimension (M)
           !>

           RESID

           !>          RESID is REAL
           !>          RESID = norm(B - U * C) / ( max(m,n) * norm(B) * EPS ),
           !>

       Author
           Univ. of Tennessee


           Univ. of California Berkeley


           Univ. of Colorado Denver


           NAG Ltd.

       Definition at line 111 of file sbdt02.f.

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

LAPACK                          Version 3.12.0         TESTING/EIG/sbdt02.f(3)