1 //------------------------------------------------------------------------------ 2 // GB_bitmap_assign_M_row_template: traverse M for GB_ROW_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 1-by-(C->vdim) hypersparse or sparse matrix, not a vector, for 11 // GrB_Row_assign (if C is CSC) or GrB_Col_assign (if C is CSR). 12 13 // C is bitmap/full. M is sparse/hyper, and can be jumbled. 14 15 { 16 17 const int64_t *restrict kfirst_Mslice = M_ek_slicing ; 18 const int64_t *restrict klast_Mslice = M_ek_slicing + M_ntasks ; 19 const int64_t *restrict pstart_Mslice = M_ek_slicing + M_ntasks * 2 ; 20 21 ASSERT (mvlen == 1) ; 22 int64_t iC = I [0] ; 23 int tid ; 24 #pragma omp parallel for num_threads(M_nthreads) schedule(dynamic,1) \ 25 reduction(+:cnvals) 26 for (tid = 0 ; tid < M_ntasks ; tid++) 27 { 28 int64_t kfirst = kfirst_Mslice [tid] ; 29 int64_t klast = klast_Mslice [tid] ; 30 int64_t task_cnvals = 0 ; 31 32 //---------------------------------------------------------------------- 33 // traverse over M (0,kfirst:klast) 34 //---------------------------------------------------------------------- 35 36 for (int64_t k = kfirst ; k <= klast ; k++) 37 { 38 39 //------------------------------------------------------------------ 40 // find the part of M(0,k) for this task 41 //------------------------------------------------------------------ 42 43 int64_t jM = GBH (Mh, k) ; 44 int64_t pM_start, pM_end ; 45 GB_get_pA (&pM_start, &pM_end, tid, k, kfirst, 46 klast, pstart_Mslice, Mp, mvlen) ; 47 48 //------------------------------------------------------------------ 49 // traverse over M(0,jM), the kth vector of M 50 //------------------------------------------------------------------ 51 52 // for row_assign: M is a single row, iC = I [0] 53 // It has either 0 or 1 entry. 54 int64_t pM = pM_start ; 55 56 if (pM < pM_end) 57 { 58 bool mij = GB_mcast (Mx, pM, msize) ; 59 if (mij) 60 { 61 int64_t jC = jM ; 62 int64_t pC = iC + jC * cvlen ; 63 GB_MASK_WORK (pC) ; 64 } 65 } 66 } 67 cnvals += task_cnvals ; 68 } 69 } 70 71