      SUBROUTINE alpha_2_5_2_1(d_a,k_a_offset,d_b,k_b_offset,d_c,k_c_off
     &set)
C     $Id: alpha_2_5_2_1.F 24184 2013-05-04 00:43:17Z edo $
C     This is a Fortran77 program generated by Tensor Contraction Engine v.1.0
C     Copyright (c) Battelle & Pacific Northwest National Laboratory (2002)
C     i2 ( p11 p13 h10 p1 )_vtrb + = -1 * Sum ( p3 ) * trb ( p3 h10 )_trb * v ( p11 p13 p1 p3 )_v
      IMPLICIT NONE
#include "global.fh"
#include "mafdecls.fh"
#include "sym.fh"
#include "errquit.fh"
#include "tce.fh"
      INTEGER d_a
      INTEGER k_a_offset
      INTEGER d_b
      INTEGER k_b_offset
      INTEGER d_c
      INTEGER k_c_offset
      INTEGER NXTASK
      INTEGER next
      INTEGER nprocs
      INTEGER count
      INTEGER p11b
      INTEGER p13b
      INTEGER h10b
      INTEGER p1b
      INTEGER dimc
      INTEGER l_c_sort
      INTEGER k_c_sort
      INTEGER p3b
      INTEGER p3b_1
      INTEGER h10b_1
      INTEGER p11b_2
      INTEGER p13b_2
      INTEGER p1b_2
      INTEGER p3b_2
      INTEGER dim_common
      INTEGER dima_sort
      INTEGER dima
      INTEGER dimb_sort
      INTEGER dimb
      INTEGER l_a_sort
      INTEGER k_a_sort
      INTEGER l_a
      INTEGER k_a
      INTEGER l_b_sort
      INTEGER k_b_sort
      INTEGER l_b
      INTEGER k_b
      INTEGER l_c
      INTEGER k_c
      EXTERNAL NXTASK
      nprocs = GA_NNODES()
      count = 0
      next = NXTASK(nprocs,1)
      DO p11b = noab+1,noab+nvab
      DO p13b = p11b,noab+nvab
      DO h10b = 1,noab
      DO p1b = noab+1,noab+nvab
      IF (next.eq.count) THEN
      IF ((.not.restricted).or.(int_mb(k_spin+p11b-1)+int_mb(k_spin+p13b
     &-1)+int_mb(k_spin+h10b-1)+int_mb(k_spin+p1b-1).ne.8)) THEN
      IF (int_mb(k_spin+p11b-1)+int_mb(k_spin+p13b-1) .eq. int_mb(k_spin
     &+h10b-1)+int_mb(k_spin+p1b-1)) THEN
      IF (ieor(int_mb(k_sym+p11b-1),ieor(int_mb(k_sym+p13b-1),ieor(int_m
     &b(k_sym+h10b-1),int_mb(k_sym+p1b-1)))) .eq. ieor(irrep_v,irrep_trb
     &)) THEN
      dimc = int_mb(k_range+p11b-1) * int_mb(k_range+p13b-1) * int_mb(k_
     &range+h10b-1) * int_mb(k_range+p1b-1)
      IF (.not.MA_PUSH_GET(mt_dbl,dimc,'noname',l_c_sort,k_c_sort)) CALL
     & ERRQUIT('alpha_2_5_2_1',0,MA_ERR)
      CALL DFILL(dimc,0.0d0,dbl_mb(k_c_sort),1)
      DO p3b = noab+1,noab+nvab
      IF (int_mb(k_spin+p3b-1) .eq. int_mb(k_spin+h10b-1)) THEN
      IF (ieor(int_mb(k_sym+p3b-1),int_mb(k_sym+h10b-1)) .eq. irrep_trb)
     & THEN
      CALL TCE_RESTRICTED_2(p3b,h10b,p3b_1,h10b_1)
      CALL TCE_RESTRICTED_4(p11b,p13b,p1b,p3b,p11b_2,p13b_2,p1b_2,p3b_2)
      dim_common = int_mb(k_range+p3b-1)
      dima_sort = int_mb(k_range+h10b-1)
      dima = dim_common * dima_sort
      dimb_sort = int_mb(k_range+p11b-1) * int_mb(k_range+p13b-1) * int_
     &mb(k_range+p1b-1)
      dimb = dim_common * dimb_sort
      IF ((dima .gt. 0) .and. (dimb .gt. 0)) THEN
      IF (.not.MA_PUSH_GET(mt_dbl,dima,'noname',l_a_sort,k_a_sort)) CALL
     & ERRQUIT('alpha_2_5_2_1',1,MA_ERR)
      IF (.not.MA_PUSH_GET(mt_dbl,dima,'noname',l_a,k_a)) CALL ERRQUIT('
     &alpha_2_5_2_1',2,MA_ERR)
      CALL GET_HASH_BLOCK(d_a,dbl_mb(k_a),dima,int_mb(k_a_offset),(h10b_
     &1 - 1 + noab * (p3b_1 - noab - 1)))
      CALL TCE_SORT_2(dbl_mb(k_a),dbl_mb(k_a_sort),int_mb(k_range+p3b-1)
     &,int_mb(k_range+h10b-1),2,1,1.0d0)
      IF (.not.MA_POP_STACK(l_a)) CALL ERRQUIT('alpha_2_5_2_1',3,MA_ERR)
      IF (.not.MA_PUSH_GET(mt_dbl,dimb,'noname',l_b_sort,k_b_sort)) CALL
     & ERRQUIT('alpha_2_5_2_1',4,MA_ERR)
      IF (.not.MA_PUSH_GET(mt_dbl,dimb,'noname',l_b,k_b)) CALL ERRQUIT('
     &alpha_2_5_2_1',5,MA_ERR)
      IF ((p3b .lt. p1b)) THEN
      if(.not.intorb) then
      CALL GET_HASH_BLOCK(d_b,dbl_mb(k_b),dimb,int_mb(k_b_offset),(p1b_2
     & - 1 + (noab+nvab) * (p3b_2 - 1 + (noab+nvab) * (p13b_2 - 1 + (noa
     &b+nvab) * (p11b_2 - 1)))))
      else
      CALL GET_HASH_BLOCK_I(d_b,dbl_mb(k_b),dimb,int_mb(k_b_offset),
     &(p1b_2
     & - 1 + (noab+nvab) * (p3b_2 - 1 + (noab+nvab) * (p13b_2 - 1 + (noa
     &b+nvab) * (p11b_2 - 1)))),p1b_2,p3b_2,p13b_2,p11b_2)
      end if
      CALL TCE_SORT_4(dbl_mb(k_b),dbl_mb(k_b_sort),int_mb(k_range+p11b-1
     &),int_mb(k_range+p13b-1),int_mb(k_range+p3b-1),int_mb(k_range+p1b-
     &1),4,2,1,3,-1.0d0)
      END IF
      IF ((p1b .le. p3b)) THEN
      if(.not.intorb) then
      CALL GET_HASH_BLOCK(d_b,dbl_mb(k_b),dimb,int_mb(k_b_offset),(p3b_2
     & - 1 + (noab+nvab) * (p1b_2 - 1 + (noab+nvab) * (p13b_2 - 1 + (noa
     &b+nvab) * (p11b_2 - 1)))))
      else
      CALL GET_HASH_BLOCK_I(d_b,dbl_mb(k_b),dimb,int_mb(k_b_offset),
     &(p3b_2
     & - 1 + (noab+nvab) * (p1b_2 - 1 + (noab+nvab) * (p13b_2 - 1 + (noa
     &b+nvab) * (p11b_2 - 1)))),p3b_2,p1b_2,p13b_2,p11b_2)
      end if
      CALL TCE_SORT_4(dbl_mb(k_b),dbl_mb(k_b_sort),int_mb(k_range+p11b-1
     &),int_mb(k_range+p13b-1),int_mb(k_range+p1b-1),int_mb(k_range+p3b-
     &1),3,2,1,4,1.0d0)
      END IF
      IF (.not.MA_POP_STACK(l_b)) CALL ERRQUIT('alpha_2_5_2_1',6,MA_ERR)
      CALL DGEMM('T','N',dima_sort,dimb_sort,dim_common,1.0d0,dbl_mb(k_a
     &_sort),dim_common,dbl_mb(k_b_sort),dim_common,1.0d0,dbl_mb(k_c_sor
     &t),dima_sort)
      IF (.not.MA_POP_STACK(l_b_sort)) CALL ERRQUIT('alpha_2_5_2_1',7,MA
     &_ERR)
      IF (.not.MA_POP_STACK(l_a_sort)) CALL ERRQUIT('alpha_2_5_2_1',8,MA
     &_ERR)
      END IF
      END IF
      END IF
      END DO
      IF (.not.MA_PUSH_GET(mt_dbl,dimc,'noname',l_c,k_c)) CALL ERRQUIT('
     &alpha_2_5_2_1',9,MA_ERR)
      CALL TCE_SORT_4(dbl_mb(k_c_sort),dbl_mb(k_c),int_mb(k_range+p1b-1)
     &,int_mb(k_range+p13b-1),int_mb(k_range+p11b-1),int_mb(k_range+h10b
     &-1),3,2,4,1,-1.0d0)
      CALL ADD_HASH_BLOCK(d_c,dbl_mb(k_c),dimc,int_mb(k_c_offset),(p1b -
     & noab - 1 + nvab * (h10b - 1 + noab * (p13b - noab - 1 + nvab * (p
     &11b - noab - 1)))))
      IF (.not.MA_POP_STACK(l_c)) CALL ERRQUIT('alpha_2_5_2_1',10,MA_ERR
     &)
      IF (.not.MA_POP_STACK(l_c_sort)) CALL ERRQUIT('alpha_2_5_2_1',11,M
     &A_ERR)
      END IF
      END IF
      END IF
      next = NXTASK(nprocs,1)
      END IF
      count = count + 1
      END DO
      END DO
      END DO
      END DO
      next = NXTASK(-nprocs,1)
      call GA_SYNC()
      RETURN
      END
