FUNCTION DLANGE1_F95( A, NORM, INFO ) ! ! -- LAPACK95 interface driver routine (version 3.0) -- ! UNI-C, Denmark; Univ. of Tennessee, USA; NAG Ltd., UK ! September, 2000 ! ! .. "Use Statements" .. USE LA_PRECISION, ONLY: WP => DP USE LA_AUXMOD, ONLY: ERINFO, LSAME USE F77_LAPACK, ONLY: LANGE_F77 => LA_LANGE ! .. "Implicit Statement" .. IMPLICIT NONE ! .. "Function Type" .. REAL(WP) :: DLANGE1_F95 ! .. "Scalar Arguments" .. CHARACTER(LEN=1), INTENT(IN), OPTIONAL :: NORM INTEGER, INTENT(OUT), OPTIONAL :: INFO ! .. "Array Arguments" .. REAL(WP), INTENT(IN) :: A(:) ! .. "Parameters" .. CHARACTER(LEN=8), PARAMETER :: SRNAME = 'LA_LANGE' ! .. "Local Scalars" .. CHARACTER(LEN=1) :: LNORM INTEGER :: ISTAT, ISTAT1, LDA, LINFO, M, N REAL(WP), TARGET :: LLWORK(1) ! .. "Local Pointers" .. REAL(WP), POINTER :: WORK(:) ! .. "Intrinsic Functions" .. INTRINSIC SIZE, PRESENT, MAX ! .. "Executable Statements" .. LINFO = 0; M = SIZE(A); N = 1; LDA = MAX(1,M) ISTAT = 0 IF( PRESENT(NORM) )THEN; LNORM = NORM; ELSE; LNORM = '1'; ENDIF ! .. "Testing The Arguments" .. IF( M < 0 )THEN; LINFO = -1 ELSE IF( .NOT. ( LSAME(LNORM,'M') .OR. LSAME(LNORM,'1') .OR. & LSAME(LNORM,'I') .OR. LSAME(LNORM,'F') .OR. & LSAME(LNORM,'E') ) )THEN; LINFO = -2 ELSE IF( LSAME(LNORM,'I') )THEN; ALLOCATE( WORK( M), STAT=ISTAT ) ELSE; WORK => LLWORK; ENDIF IF( ISTAT == 0 ) & DLANGE1_F95 = LANGE_F77( LNORM, M, N, A, LDA, WORK ) IF( LSAME(LNORM,'I') )DEALLOCATE( WORK, STAT=ISTAT1 ) ENDIF CALL ERINFO( LINFO, SRNAME, INFO, ISTAT ) END FUNCTION DLANGE1_F95