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//------------------------------------------------------------------------------
// GB_add_bitmap_noM_23: C=A+B, C bitmap, A sparse/hyper, B bitmap
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// C is bitmap.
// A is sparse/hyper, B is bitmap.
{
//--------------------------------------------------------------------------
// Method23: C and B are bitmap; A is sparse or hypersparse
//--------------------------------------------------------------------------
#ifdef GB_ISO_ADD
GB_memcpy (Cb, Bb, cnz, C_nthreads) ;
#else
int64_t p ;
#pragma omp parallel for num_threads(C_nthreads) schedule(static)
for (p = 0 ; p < cnz ; p++)
{
int8_t b = Bb [p] ;
if (b)
{
#if GB_IS_EWISEUNION
{
// C (i,j) = alpha + B(i,j)
GB_LOAD_B (bij, Bx, p, B_iso) ;
GB_EWISEOP (Cx, p, alpha_scalar, bij, p % vlen, p / vlen) ;
}
#else
{
// C (i,j) = B (i,j)
GB_COPY_B_to_C (Cx, p, Bx, p, B_iso) ;
}
#endif
}
Cb [p] = b ;
}
#endif
cnvals = B->nvals ;
const int64_t *kfirst_Aslice = A_ek_slicing ;
const int64_t *klast_Aslice = A_ek_slicing + A_ntasks ;
const int64_t *pstart_Aslice = A_ek_slicing + A_ntasks*2 ;
#pragma omp parallel for num_threads(A_nthreads) schedule(dynamic,1) \
reduction(+:cnvals)
for (taskid = 0 ; taskid < A_ntasks ; taskid++)
{
int64_t kfirst = kfirst_Aslice [taskid] ;
int64_t klast = klast_Aslice [taskid] ;
int64_t task_cnvals = 0 ;
for (int64_t k = kfirst ; k <= klast ; k++)
{
// find the part of A(:,k) for this task
int64_t j = GBh_A (Ah, k) ;
GB_GET_PA (pA_start, pA_end, taskid, k, kfirst, klast,
pstart_Aslice, GB_IGET (Ap, k), GB_IGET (Ap, k+1)) ;
int64_t pC_start = j * vlen ;
// traverse over A(:,j), the kth vector of A
for (int64_t pA = pA_start ; pA < pA_end ; pA++)
{
int64_t i = GB_IGET (Ai, pA) ;
int64_t p = pC_start + i ;
if (Cb [p])
{
// C (i,j) = A (i,j) + B (i,j)
#ifndef GB_ISO_ADD
GB_LOAD_A (aij, Ax, pA, A_iso) ;
GB_LOAD_B (bij, Bx, p , B_iso) ;
GB_EWISEOP (Cx, p, aij, bij, i, j) ;
#endif
}
else
{
#ifndef GB_ISO_ADD
#if GB_IS_EWISEUNION
{
// C (i,j) = A(i,j) + beta
GB_LOAD_A (aij, Ax, pA, A_iso) ;
GB_EWISEOP (Cx, p, aij, beta_scalar, i, j) ;
}
#else
{
// C (i,j) = A (i,j)
GB_COPY_A_to_C (Cx, p, Ax, pA, A_iso) ;
}
#endif
#endif
Cb [p] = 1 ;
task_cnvals++ ;
}
}
}
cnvals += task_cnvals ;
}
}
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