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https://github.com/QuantumPackage/qp2.git
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106 lines
3.0 KiB
Fortran
106 lines
3.0 KiB
Fortran
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! ---
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BEGIN_PROVIDER [double precision, no_0_v0]
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implicit none
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integer :: i, j, k
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double precision :: tmp
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double precision :: I_ijk_ijk, I_ijk_kij, I_ijk_jik, I_ijk_jki, I_ijk_ikj, I_ijk_kji
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double precision :: t0, t1
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call wall_time(t0)
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print*, " Providing no_0_v0 ..."
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if(elec_alpha_num .eq. elec_beta_num) then
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tmp = 0.d0
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do i = 1, elec_beta_num
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do j = 1, elec_beta_num
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do k = 1, elec_beta_num
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call give_integrals_3_body_bi_ort(i, j, k, i, j, k, I_ijk_ijk)
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call give_integrals_3_body_bi_ort(i, j, k, k, i, j, I_ijk_kij)
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call give_integrals_3_body_bi_ort(i, j, k, j, i, k, I_ijk_jik)
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tmp = tmp + 4.d0 * (2.d0 * I_ijk_ijk + I_ijk_kij - 3.d0 * I_ijk_jik)
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enddo
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enddo
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enddo
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no_0_v0 = -1.d0 * (-tmp) / 6.d0
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else
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tmp = 0.d0
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do i = 1, elec_beta_num
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do j = 1, elec_beta_num
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do k = 1, elec_beta_num
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call give_integrals_3_body_bi_ort(i, j, k, i, j, k, I_ijk_ijk)
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call give_integrals_3_body_bi_ort(i, j, k, k, i, j, I_ijk_kij)
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call give_integrals_3_body_bi_ort(i, j, k, j, i, k, I_ijk_jik)
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tmp = tmp + 4.d0 * (2.d0 * I_ijk_ijk + I_ijk_kij - 3.d0 * I_ijk_jik)
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enddo
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enddo
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enddo
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do i = elec_beta_num+1, elec_alpha_num
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do j = elec_beta_num+1, elec_alpha_num
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do k = elec_beta_num+1, elec_alpha_num
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call give_integrals_3_body_bi_ort(i, j, k, i, j, k, I_ijk_ijk)
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call give_integrals_3_body_bi_ort(i, j, k, k, i, j, I_ijk_kij)
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call give_integrals_3_body_bi_ort(i, j, k, j, i, k, I_ijk_jik)
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tmp = tmp + I_ijk_ijk + 2.d0 * I_ijk_kij - 3.d0 * I_ijk_jik
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enddo
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enddo
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enddo
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do i = elec_beta_num+1, elec_alpha_num
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do j = 1, elec_beta_num
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do k = 1, elec_beta_num
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call give_integrals_3_body_bi_ort(i, j, k, i, j, k, I_ijk_ijk)
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call give_integrals_3_body_bi_ort(i, j, k, j, k, i, I_ijk_jki)
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call give_integrals_3_body_bi_ort(i, j, k, i, k, j, I_ijk_ikj)
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call give_integrals_3_body_bi_ort(i, j, k, j, i, k, I_ijk_jik)
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call give_integrals_3_body_bi_ort(i, j, k, k, j, i, I_ijk_kji)
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tmp = tmp + 6.d0 * (2.d0 * I_ijk_ijk + I_ijk_jki - I_ijk_ikj - I_ijk_jik - I_ijk_kji)
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enddo
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do k = elec_beta_num+1, elec_alpha_num
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call give_integrals_3_body_bi_ort(i, j, k, i, j, k, I_ijk_ijk)
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call give_integrals_3_body_bi_ort(i, j, k, j, k, i, I_ijk_jki)
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call give_integrals_3_body_bi_ort(i, j, k, i, k, j, I_ijk_ikj)
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call give_integrals_3_body_bi_ort(i, j, k, j, i, k, I_ijk_jik)
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call give_integrals_3_body_bi_ort(i, j, k, k, j, i, I_ijk_kji)
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tmp = tmp + 3.d0 * (2.d0 * I_ijk_ijk + 2.d0 * I_ijk_jki - I_ijk_ikj - I_ijk_jik - 2.d0 * I_ijk_kji)
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enddo
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enddo
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enddo
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no_0_v0 = -1.d0 * (-tmp) / 6.d0
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endif
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call wall_time(t1)
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print*, " Wall time for no_0_v0 (sec) = ", (t1 - t0)/60.d0
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print*, " no_0_v0 = ", no_0_v0
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END_PROVIDER
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! ---
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