1 //------------------------------------------------------------------------------ 2 // GB_bitmap_assign_M_all_template: traverse M for GB_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 sparse or hypersparse, not bitmap or full. C<M>(I,J) = ... is being 11 // computed (or !M), and all entries in M are traversed. For a given entry 12 // M (iM,jM) in the mask, the entry C(iM,jM) is accessed at location pC. 13 14 // C is bitmap/full. M is sparse/hyper, and can be jumbled. 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 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 int64_t jM = GBH (Mh, k) ; 42 int64_t pM_start, pM_end ; 43 GB_get_pA (&pM_start, &pM_end, tid, k, kfirst, 44 klast, pstart_Mslice, Mp, mvlen) ; 45 46 //------------------------------------------------------------------ 47 // traverse over M(:,jM), the kth vector of M 48 //------------------------------------------------------------------ 49 50 // for assign: M is a matrix the same size as C 51 int64_t jC = jM ; 52 53 for (int64_t pM = pM_start ; pM < pM_end ; pM++) 54 { 55 bool mij = GB_mcast (Mx, pM, msize) ; 56 if (mij) 57 { 58 int64_t iC = Mi [pM] ; 59 int64_t pC = iC + jC * cvlen ; 60 GB_MASK_WORK (pC) ; 61 } 62 } 63 } 64 cnvals += task_cnvals ; 65 } 66 } 67 68