1 //------------------------------------------------------------------------------ 2 // GB_bitmap_assign_M_col_template: traverse M for GB_COL_ASSIGN 3 //------------------------------------------------------------------------------ 4 5 // SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2021, All Rights Reserved. 6 // SPDX-License-Identifier: Apache-2.0 7 8 //------------------------------------------------------------------------------ 9 10 // M is a (C->vlen)-by-1 hypersparse or sparse matrix, for 11 // GrB_Row_assign (if C is CSR) or GrB_Col_assign (if C is CSC). 12 13 // C is bitmap/full. M is sparse/hyper, and can be jumbled. 14 15 { 16 const int64_t *restrict kfirst_Mslice = M_ek_slicing ; 17 const int64_t *restrict klast_Mslice = M_ek_slicing + M_ntasks ; 18 const int64_t *restrict pstart_Mslice = M_ek_slicing + M_ntasks * 2 ; 19 20 int64_t jC = J [0] ; 21 int tid ; 22 #pragma omp parallel for num_threads(M_nthreads) schedule(dynamic,1) \ 23 reduction(+:cnvals) 24 for (tid = 0 ; tid < M_ntasks ; tid++) 25 { 26 int64_t kfirst = kfirst_Mslice [tid] ; 27 int64_t klast = klast_Mslice [tid] ; 28 int64_t task_cnvals = 0 ; 29 30 //---------------------------------------------------------------------- 31 // traverse over M (:,kfirst:klast) 32 //---------------------------------------------------------------------- 33 34 for (int64_t k = kfirst ; k <= klast ; k++) 35 { 36 37 //------------------------------------------------------------------ 38 // find the part of M(:,k) for this task 39 //------------------------------------------------------------------ 40 41 ASSERT (k == 0) ; 42 ASSERT (GBH (Mh, k) == 0) ; 43 int64_t pM_start, pM_end ; 44 GB_get_pA (&pM_start, &pM_end, tid, k, kfirst, 45 klast, pstart_Mslice, Mp, mvlen) ; 46 47 //------------------------------------------------------------------ 48 // traverse over M(:,0), the kth vector of M 49 //------------------------------------------------------------------ 50 51 // for col_assign: M is a single vector, jC = J [0] 52 for (int64_t pM = pM_start ; pM < pM_end ; pM++) 53 { 54 bool mij = GB_mcast (Mx, pM, msize) ; 55 if (mij) 56 { 57 int64_t iC = Mi [pM] ; 58 int64_t pC = iC + jC * cvlen ; 59 GB_MASK_WORK (pC) ; 60 } 61 } 62 } 63 cnvals += task_cnvals ; 64 } 65 } 66 67