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\brief Enter brief description of file here
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#include <libdpd/dpd.h>
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#include <libpsio/psio.h>
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namespace psi { namespace ccenergy {
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dpdfile2 tIA, tia, t1;
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dpdbuf4 newtIJAB, newtijab, newtIjAb, t2, t2a, t2b;
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int Gie, Gij, Gab, nrows, ncols, nlinks, Gi, Ge, Gj, i, I;
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if(params.ref == 0) { /** RHF **/
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/* dpd_buf4_init(&newtIjAb, CC_TAMPS, 0, 0, 5, 0, 5, 0, "New tIjAb"); */
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/* dpd_buf4_init(&Z, CC_TMP0, 0, 0, 5, 0, 5, 0, "Z1(ij,ab)"); */
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/* dpd_buf4_init(&F, CC_FINTS, 0, 11, 5, 11, 5, 0, "F <ai|bc>"); */
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/* dpd_file2_init(&tIA, CC_OEI, 0, 0, 1, "tIA"); */
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/* dpd_contract244(&tIA, &F, &Z, 1, 0, 0, 1, 0); */
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/* dpd_file2_close(&tIA); */
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/* dpd_buf4_close(&F); */
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/* dpd_buf4_sort(&Z, CC_TMP0, qpsr, 0, 5, "Z2(ji,ba)"); */
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/* dpd_buf4_axpy(&Z, &newtIjAb, 1.0); */
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/* dpd_buf4_close(&Z); */
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/* dpd_buf4_init(&Z, CC_TMP0, 0, 0, 5, 0, 5, 0, "Z2(ji,ba)"); */
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/* dpd_buf4_axpy(&Z, &newtIjAb, 1.0); */
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/* dpd_buf4_close(&Z); */
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/* dpd_buf4_close(&newtIjAb); */
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/* t(ij,ab) <-- t(j,e) * <ie|ab> + t(i,e) * <je|ba> */
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/* OOC code added 3/23/05, TDC */
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dpd_buf4_init(&X, CC_TMP0, 0, 0, 5, 0, 5, 0, "X(Ij,Ab)");
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dpd_buf4_init(&F, CC_FINTS, 0, 10, 5, 10, 5, 0, "F <ia|bc>");
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dpd_file2_init(&t1, CC_OEI, 0, 0, 1, "tIA");
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dpd_file2_mat_init(&t1);
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dpd_file2_mat_rd(&t1);
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for(Gie=0; Gie < moinfo.nirreps; Gie++) {
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Gab = Gie; /* F is totally symmetric */
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Gij = Gab; /* T2 is totally symmetric */
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dpd_buf4_mat_irrep_init(&X, Gij);
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ncols = F.params->coltot[Gie];
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for(Gi=0; Gi < moinfo.nirreps; Gi++) {
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Gj = Ge = Gi^Gie; /* T1 is totally symmetric */
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nlinks = moinfo.virtpi[Ge];
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nrows = moinfo.occpi[Gj];
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dpd_buf4_mat_irrep_init_block(&F, Gie, nlinks);
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for(i=0; i < moinfo.occpi[Gi]; i++) {
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I = F.params->poff[Gi] + i;
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dpd_buf4_mat_irrep_rd_block(&F, Gie, F.row_offset[Gie][I], nlinks);
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if(nrows && ncols && nlinks)
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C_DGEMM('n','n',nrows,ncols,nlinks,1.0,t1.matrix[Gj][0],nlinks,F.matrix[Gie][0],ncols,
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0.0,X.matrix[Gij][X.row_offset[Gij][I]],ncols);
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dpd_buf4_mat_irrep_close_block(&F, Gie, nlinks);
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dpd_buf4_mat_irrep_wrt(&X, Gij);
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dpd_buf4_mat_irrep_close(&X, Gij);
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dpd_file2_mat_close(&t1);
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dpd_buf4_init(&t2, CC_TAMPS, 0, 0, 5, 0, 5, 0, "New tIjAb");
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dpd_buf4_axpy(&X, &t2, 1);
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dpd_buf4_sort_axpy(&X, CC_TAMPS, qpsr, 0, 5, "New tIjAb", 1);
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else if(params.ref == 1) { /** ROHF **/
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dpd_buf4_init(&newtIJAB, CC_TAMPS, 0, 0, 7, 2, 7, 0, "New tIJAB");
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dpd_buf4_init(&newtijab, CC_TAMPS, 0, 0, 7, 2, 7, 0, "New tijab");
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dpd_buf4_init(&newtIjAb, CC_TAMPS, 0, 0, 5, 0, 5, 0, "New tIjAb");
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dpd_file2_init(&tIA, CC_OEI, 0, 0, 1, "tIA");
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dpd_file2_init(&tia, CC_OEI, 0, 0, 1, "tia");
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dpd_buf4_init(&F_anti, CC_FINTS, 0, 10, 7, 10, 5, 1, "F <ia|bc>");
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dpd_buf4_init(&t2, CC_TMP0, 0, 0, 7, 0, 7, 0, "T (IJ,A>B)");
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dpd_contract424(&F_anti, &tIA, &t2, 1, 1, 1, 1, 0);
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dpd_buf4_sort(&t2, CC_TMP0, qprs, 0, 7, "T (JI,A>B)");
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dpd_buf4_init(&t2a, CC_TMP0, 0, 0, 7, 0, 7, 0, "T (IJ,A>B)");
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dpd_buf4_init(&t2b, CC_TMP0, 0, 0, 7, 0, 7, 0, "T (JI,A>B)");
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dpd_buf4_axpy(&t2b, &t2a, -1);
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dpd_buf4_axpy(&t2a, &newtIJAB, 1);
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dpd_buf4_close(&t2b);
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dpd_buf4_close(&t2a);
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dpd_buf4_close(&F_anti);
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dpd_buf4_init(&F_anti, CC_FINTS, 0, 10, 7, 10, 5, 1, "F <ia|bc>");
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dpd_buf4_init(&t2, CC_TMP0, 0, 0, 7, 0, 7, 0, "T (IJ,A>B)");
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dpd_contract424(&F_anti, &tia, &t2, 1, 1, 1, 1, 0);
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dpd_buf4_sort(&t2, CC_TMP0, qprs, 0, 7, "T (JI,A>B)");
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dpd_buf4_init(&t2a, CC_TMP0, 0, 0, 7, 0, 7, 0, "T (IJ,A>B)");
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dpd_buf4_init(&t2b, CC_TMP0, 0, 0, 7, 0, 7, 0, "T (JI,A>B)");
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dpd_buf4_axpy(&t2b, &t2a, -1);
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dpd_buf4_axpy(&t2a, &newtijab, 1);
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dpd_buf4_close(&t2b);
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dpd_buf4_close(&t2a);
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dpd_buf4_close(&F_anti);
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dpd_buf4_init(&F, CC_FINTS, 0, 10, 5, 10, 5, 0, "F <ia|bc>");
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dpd_contract424(&F, &tia, &newtIjAb, 1, 1, 1, 1, 1);
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dpd_buf4_init(&F, CC_FINTS, 0, 11, 5, 11, 5, 0, "F <ai|bc>");
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dpd_contract244(&tIA, &F, &newtIjAb, 1, 0, 0, 1, 1);
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dpd_file2_close(&tIA);
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dpd_file2_close(&tia);
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dpd_buf4_close(&newtIJAB);
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dpd_buf4_close(&newtijab);
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dpd_buf4_close(&newtIjAb);
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else if(params.ref == 2) { /*** UHF ***/
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dpd_buf4_init(&newtIJAB, CC_TAMPS, 0, 0, 7, 2, 7, 0, "New tIJAB");
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dpd_buf4_init(&newtijab, CC_TAMPS, 0, 10, 17, 12, 17, 0, "New tijab");
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dpd_buf4_init(&newtIjAb, CC_TAMPS, 0, 22, 28, 22, 28, 0, "New tIjAb");
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dpd_file2_init(&tIA, CC_OEI, 0, 0, 1, "tIA");
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dpd_file2_init(&tia, CC_OEI, 0, 2, 3, "tia");
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dpd_buf4_init(&F, CC_FINTS, 0, 20, 7, 20, 5, 1, "F <IA|BC>");
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dpd_buf4_init(&t2, CC_TMP0, 0, 0, 7, 0, 7, 0, "T (IJ,A>B)");
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dpd_contract424(&F, &tIA, &t2, 1, 1, 1, 1, 0);
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dpd_buf4_sort(&t2, CC_TMP0, qprs, 0, 7, "T (JI,A>B)");
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dpd_buf4_init(&t2a, CC_TMP0, 0, 0, 7, 0, 7, 0, "T (IJ,A>B)");
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dpd_buf4_init(&t2b, CC_TMP0, 0, 0, 7, 0, 7, 0, "T (JI,A>B)");
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dpd_buf4_axpy(&t2b, &t2a, -1);
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dpd_buf4_axpy(&t2a, &newtIJAB, 1);
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dpd_buf4_close(&t2b);
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dpd_buf4_close(&t2a);
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dpd_buf4_init(&F, CC_FINTS, 0, 30, 17, 30, 15, 1, "F <ia|bc>");
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dpd_buf4_init(&t2, CC_TMP0, 0, 10, 17, 10, 17, 0, "T (ij,a>b)");
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dpd_contract424(&F, &tia, &t2, 1, 1, 1, 1, 0);
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dpd_buf4_sort(&t2, CC_TMP0, qprs, 10, 17, "T (ji,a>b)");
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dpd_buf4_init(&t2a, CC_TMP0, 0, 10, 17, 10, 17, 0, "T (ij,a>b)");
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dpd_buf4_init(&t2b, CC_TMP0, 0, 10, 17, 10, 17, 0, "T (ji,a>b)");
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dpd_buf4_axpy(&t2b, &t2a, -1);
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dpd_buf4_axpy(&t2a, &newtijab, 1);
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dpd_buf4_close(&t2b);
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dpd_buf4_close(&t2a);
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dpd_buf4_init(&F, CC_FINTS, 0, 24, 28, 24, 28, 0, "F <Ia|Bc>");
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dpd_contract424(&F, &tia, &newtIjAb, 1, 1, 1, 1, 1);
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dpd_buf4_init(&F, CC_FINTS, 0, 28, 26, 28, 26, 0, "F <Ab|Ci>");
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dpd_contract244(&tIA, &F, &newtIjAb, 1, 2, 0, 1, 1);
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dpd_file2_close(&tIA);
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dpd_file2_close(&tia);
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dpd_buf4_close(&newtIJAB);
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dpd_buf4_close(&newtijab);
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dpd_buf4_close(&newtIjAb);
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}} // namespace psi::ccenergy