! Replaces ZTBMV  24 procedures


    ! Level 2 COMPLEX  (ZTBMV)

    ! .                         unit
    ! .     alpha  op_a  lower  diag  b

    ! 201    any    H      L     U    b < alpha a(H) b
    ! 202    any    H      L          b < alpha a(H) b
    ! 203    any    H            U    b < alpha a(H) b
    ! 204    any    H                 b < alpha a(H) b
    ! 205    any    T      L     U    b < alpha a(T) b
    ! 206    any    T      L          b < alpha a(T) b
    ! 207    any    T            U    b < alpha a(T) b
    ! 208    any    T                 b < alpha a(T) b
    ! 209    any           L     U    b < alpha a b
    ! 210    any           L          b < alpha a b
    ! 211    any                 U    b < alpha a b
    ! 212    any                      b < alpha a b
    ! 213    1.0    H      L     U    b < a(H) b
    ! 214    1.0    H      L          b < a(H) b
    ! 215    1.0    H            U    b < a(H) b
    ! 216    1.0    H                 b < a(H) b
    ! 217    1.0    T      L     U    b < a(T) b
    ! 218    1.0    T      L          b < a(T) b
    ! 219    1.0    T            U    b < a(T) b
    ! 220    1.0    T                 b < a(T) b
    ! 221    1.0           L     U    b < a b
    ! 222    1.0           L          b < a b
    ! 223    1.0                 U    b < a b
    ! 224    1.0                      b < a b


    MODULE ztbmv_01

    CONTAINS
      SUBROUTINE ztbmv_201(alpha,a,op_a,b,lower,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type, blas_unit_diag_type, &
         blas_conj_trans_type
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        TYPE (blas_conj_trans_type), INTENT (IN) :: op_a
        TYPE (blas_lower_type), INTENT (IN) :: lower
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('L','C','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_201
    END MODULE ztbmv_01

    MODULE ztbmv_02

    CONTAINS
      SUBROUTINE ztbmv_202(alpha,a,op_a,b,lower)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type, blas_conj_trans_type
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        TYPE (blas_conj_trans_type), INTENT (IN) :: op_a
        TYPE (blas_lower_type), INTENT (IN) :: lower
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('L','C','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_202
    END MODULE ztbmv_02

    MODULE ztbmv_03

    CONTAINS
      SUBROUTINE ztbmv_203(alpha,a,op_a,b,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_unit_diag_type, blas_conj_trans_type
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        TYPE (blas_conj_trans_type), INTENT (IN) :: op_a
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('U','C','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_203
    END MODULE ztbmv_03

    MODULE ztbmv_04

    CONTAINS
      SUBROUTINE ztbmv_204(alpha,a,op_a,b)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_conj_trans_type
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        TYPE (blas_conj_trans_type), INTENT (IN) :: op_a
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('U','C','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_204
    END MODULE ztbmv_04

    MODULE ztbmv_05

    CONTAINS
      SUBROUTINE ztbmv_205(alpha,a,op_a,b,lower,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type, blas_unit_diag_type, &
         blas_trans_type
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        TYPE (blas_trans_type), INTENT (IN) :: op_a
        TYPE (blas_lower_type), INTENT (IN) :: lower
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('L','T','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_205
    END MODULE ztbmv_05

    MODULE ztbmv_06

    CONTAINS
      SUBROUTINE ztbmv_206(alpha,a,op_a,b,lower)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type, blas_trans_type
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        TYPE (blas_trans_type), INTENT (IN) :: op_a
        TYPE (blas_lower_type), INTENT (IN) :: lower
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('L','T','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_206
    END MODULE ztbmv_06

    MODULE ztbmv_07

    CONTAINS
      SUBROUTINE ztbmv_207(alpha,a,op_a,b,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_unit_diag_type, blas_trans_type
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        TYPE (blas_trans_type), INTENT (IN) :: op_a
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('U','T','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_207
    END MODULE ztbmv_07

    MODULE ztbmv_08

    CONTAINS
      SUBROUTINE ztbmv_208(alpha,a,op_a,b)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_trans_type
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        TYPE (blas_trans_type), INTENT (IN) :: op_a
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('U','T','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_208
    END MODULE ztbmv_08

    MODULE ztbmv_09

    CONTAINS
      SUBROUTINE ztbmv_209(alpha,a,b,lower,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type, blas_unit_diag_type
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        TYPE (blas_lower_type), INTENT (IN) :: lower
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('L','N','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_209
    END MODULE ztbmv_09

    MODULE ztbmv_10

    CONTAINS
      SUBROUTINE ztbmv_210(alpha,a,b,lower)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        TYPE (blas_lower_type), INTENT (IN) :: lower
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('L','N','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_210
    END MODULE ztbmv_10

    MODULE ztbmv_11

    CONTAINS
      SUBROUTINE ztbmv_211(alpha,a,b,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_unit_diag_type
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('U','N','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_211
    END MODULE ztbmv_11

    MODULE ztbmv_12

    CONTAINS
      SUBROUTINE ztbmv_212(alpha,a,b)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        ! .. Scalar Arguments ..
        COMPLEX (wp), INTENT (IN) :: alpha
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        b = alpha*b
        CALL ztbmv('U','N','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_212
    END MODULE ztbmv_12

    MODULE ztbmv_13

    CONTAINS
      SUBROUTINE ztbmv_213(a,op_a,b,lower,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type, blas_unit_diag_type, &
         blas_conj_trans_type
        ! .. Scalar Arguments ..
        TYPE (blas_conj_trans_type), INTENT (IN) :: op_a
        TYPE (blas_lower_type), INTENT (IN) :: lower
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('L','C','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_213
    END MODULE ztbmv_13

    MODULE ztbmv_14

    CONTAINS
      SUBROUTINE ztbmv_214(a,op_a,b,lower)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type, blas_conj_trans_type
        ! .. Scalar Arguments ..
        TYPE (blas_conj_trans_type), INTENT (IN) :: op_a
        TYPE (blas_lower_type), INTENT (IN) :: lower
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('L','C','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_214
    END MODULE ztbmv_14

    MODULE ztbmv_15

    CONTAINS
      SUBROUTINE ztbmv_215(a,op_a,b,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_unit_diag_type, blas_conj_trans_type
        ! .. Scalar Arguments ..
        TYPE (blas_conj_trans_type), INTENT (IN) :: op_a
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('U','C','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_215
    END MODULE ztbmv_15

    MODULE ztbmv_16

    CONTAINS
      SUBROUTINE ztbmv_216(a,op_a,b)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_conj_trans_type
        ! .. Scalar Arguments ..
        TYPE (blas_conj_trans_type), INTENT (IN) :: op_a
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('U','C','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_216
    END MODULE ztbmv_16

    MODULE ztbmv_17

    CONTAINS
      SUBROUTINE ztbmv_217(a,op_a,b,lower,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type, blas_unit_diag_type, &
         blas_trans_type
        ! .. Scalar Arguments ..
        TYPE (blas_trans_type), INTENT (IN) :: op_a
        TYPE (blas_lower_type), INTENT (IN) :: lower
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('L','T','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_217
    END MODULE ztbmv_17

    MODULE ztbmv_18

    CONTAINS
      SUBROUTINE ztbmv_218(a,op_a,b,lower)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type, blas_trans_type
        ! .. Scalar Arguments ..
        TYPE (blas_trans_type), INTENT (IN) :: op_a
        TYPE (blas_lower_type), INTENT (IN) :: lower
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('L','T','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_218
    END MODULE ztbmv_18

    MODULE ztbmv_19

    CONTAINS
      SUBROUTINE ztbmv_219(a,op_a,b,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_unit_diag_type, blas_trans_type
        ! .. Scalar Arguments ..
        TYPE (blas_trans_type), INTENT (IN) :: op_a
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('U','T','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_219
    END MODULE ztbmv_19

    MODULE ztbmv_20

    CONTAINS
      SUBROUTINE ztbmv_220(a,op_a,b)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_trans_type
        ! .. Scalar Arguments ..
        TYPE (blas_trans_type), INTENT (IN) :: op_a
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('U','T','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_220
    END MODULE ztbmv_20

    MODULE ztbmv_21

    CONTAINS
      SUBROUTINE ztbmv_221(a,b,lower,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type, blas_unit_diag_type
        ! .. Scalar Arguments ..
        TYPE (blas_lower_type), INTENT (IN) :: lower
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('L','N','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_221
    END MODULE ztbmv_21

    MODULE ztbmv_22

    CONTAINS
      SUBROUTINE ztbmv_222(a,b,lower)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_lower_type
        ! .. Scalar Arguments ..
        TYPE (blas_lower_type), INTENT (IN) :: lower
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('L','N','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_222
    END MODULE ztbmv_22

    MODULE ztbmv_23

    CONTAINS
      SUBROUTINE ztbmv_223(a,b,unit_diag)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        USE blas_keywords, ONLY : blas_unit_diag_type
        ! .. Scalar Arguments ..
        TYPE (blas_unit_diag_type), INTENT (IN) :: unit_diag
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('U','N','U',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_223
    END MODULE ztbmv_23

    MODULE ztbmv_24

    CONTAINS
      SUBROUTINE ztbmv_224(a,b)
        ! .. Use Statements ..
        USE blas_kinds, ONLY : wp => dp
        ! .. Array Arguments ..
        COMPLEX (wp), INTENT (IN) :: a(:,:)
        COMPLEX (wp), INTENT (INOUT) :: b(:)
        ! .. Local Scalar ..
        INTEGER :: k, n
        ! .. External Procedures ..
        EXTERNAL ztbmv

        n = SIZE(b)
        k = SIZE(a,1) - 1
        CALL ztbmv('U','N','N',n,k,a,k+1,b,1)
      END SUBROUTINE ztbmv_224
    END MODULE ztbmv_24