@extract -b incpath.inc @extract -b @(incd)/type.inc type=@(@type) @ROUT GBSV PROGRAM LA_@(pre)GBSV_ET_EXAMPLE @extract -b @(incd)/header.inc ! .. Use Statements USE LA_PRECISION, ONLY: WP => @(upr)P USE F90_LAPACK, ONLY: LA_GBSV ! .. Implicit Statement .. IMPLICIT NONE ! .. Parameters .. @type sreal dreal CHARACTER(LEN=*), PARAMETER :: FMT = '(8(1X,F10.3))' @type scplx dcplx CHARACTER(LEN=*), PARAMETER :: FMT = '(4(1X,1H(,F9.3,1H,,F9.3,1H):))' @type ! INTEGER, PARAMETER :: NIN=5, NOUT=6 ! .. Local Scalars .. INTEGER :: K, KL, KU, I, J, INFO, N, NRHS ! .. Local Arrays .. INTEGER, ALLOCATABLE :: IPIV(:) REAL(WP), ALLOCATABLE :: AA(:,:), BB(:,:) @(type)(WP), ALLOCATABLE :: A(:,:), B(:,:) ! .. Executable Statements .. WRITE (NOUT,*) '@(pre)GBSV ET_Example Program Results.' READ ( NIN, * ) ! Skip heading in data file READ ( NIN, * ) N, KL, KU, NRHS PRINT *, 'N = ', N, ' KL = ', KL, ' KU = ', KU, ' NRHS = ', NRHS ALLOCATE ( A(2*KL+KU+1,N), AA(2*KL+KU+1,N), B(N,NRHS), BB(N,NRHS), IPIV(N) ) ! DO I = KL+1, KL+1+KU READ (NIN, *) (AA(I, J), J = KU-I+KL+2, N) ENDDO DO I = KL+2+KU, 2*KL+KU+1 READ (NIN, *) (AA(I, J), J = 1, N-I+KL+1+KU) ENDDO ! ENDDO B = 0.0_WP DO I = 1, NRHS DO J = 1, N DO K = MAX(1,J-KL), MIN(J+KU,N) BB(J,I) = AA(KL+KU+1+J-K,K) + BB(J,I) ENDDO ENDDO BB(:,I) = BB(:,I)*I ENDDO A = AA; B = BB WRITE(NOUT,*) 'The matrix A:' DO I = KL+1, 2*KL+KU+1 WRITE (NOUT,*) 'I = ', I; WRITE (NOUT,FMT) A(I,MAX(1,KL+KU+2-I):MIN(N,KL+KU+N+1-I)) ENDDO WRITE(NOUT,*) 'The RHS matrix B:' DO J = 1, NRHS WRITE (NOUT,*) 'RHS', J; WRITE (NOUT,FMT) B(:,J) ENDDO ! WRITE ( NOUT, * )'---------------------------------------------------------' WRITE ( NOUT, * ) WRITE ( NOUT, * )'Details of LA_@(pre)GBSV LAPACK Subroutine Results.' WRITE ( NOUT, * ) ! WRITE(NOUT,*) WRITE(NOUT,*) 'CALL LA_GBSV( A, B, KL, IPIV, INFO )' A=AA; B=BB CALL LA_GBSV( A, B, KL, IPIV, INFO ) WRITE(NOUT,*)' B - the solution vectors computed by LA_GBSV, INFO = ', INFO DO J = 1, NRHS; WRITE (NOUT,FMT) B(:,J); END DO WRITE(NOUT,*) 'Pivots: ', IPIV WRITE(NOUT,*) WRITE(NOUT,*) 'CALL LA_GBSV( A, B(1:N,1), KL, IPIV, INFO )' A=AA; B=BB CALL LA_GBSV( A, B(1:N,1), KL, IPIV, INFO ) WRITE(NOUT,*)' B - the solution vectors computed by LA_GBSV, INFO = ', INFO WRITE (NOUT,FMT) B(:,1) WRITE(NOUT,*) 'Pivots: ', IPIV ! WRITE(NOUT,*)' B - the solution vectors computed by LA_GBSV:' WRITE(NOUT,*) WRITE(NOUT,*) 'CALL LA_GBSV(A, B, KL)' A=AA; B=BB CALL LA_GBSV(A,B,KL) WRITE(NOUT,*)' B - the solution vectors computed by LA_GBSV:' DO J = 1, NRHS; WRITE (NOUT,FMT) B(:,J); END DO WRITE(NOUT,*) WRITE(NOUT,*) 'CALL LA_GBSV(A, B(1:N,1), KL)' A=AA; B=BB CALL LA_GBSV(A,B(1:N,1),KL) WRITE(NOUT,*)' B - the solution vectors computed by LA_GBSV:' WRITE (NOUT,FMT) B(:,1) ! WRITE(NOUT,*) WRITE(NOUT,*) 'CALL LA_GBSV(A, B, IPIV=IPIV)' A=AA; B=BB CALL LA_GBSV(A,B,IPIV=IPIV) WRITE(NOUT,*)' B - the solution vectors computed by LA_GBSV:' DO J = 1, NRHS WRITE (NOUT,FMT) B(:,J) END DO WRITE(NOUT,*) 'Pivots: ', IPIV WRITE(NOUT,*) WRITE(NOUT,*) 'CALL LA_GBSV(A,B(1:N,1),KL,IPIV)' A=AA; B=BB CALL LA_GBSV(A,B(1:N,1),KL,IPIV) WRITE(NOUT,*)' B - the solution vectors computed by LA_GBSV:' WRITE (NOUT,FMT) B(1:N,1) WRITE(NOUT,*) 'Pivots: ', IPIV ! END PROGRAM LA_@(pre)GBSV_ET_EXAMPLE