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//------------------------------------------------------------------------------
// GB_bitmap_assign_1_template: C bitmap, M bitmap/full, with accum
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// C<M>(I,J) += A assign
// C(I,J)<M> += A subassign
// C<M,repl>(I,J) += A assign
// C(I,J)<M,repl> += A subassign
// C<!M>(I,J) += A assign
// C(I,J)<!M> += A subassign
// C<!M,repl>(I,J) += A assign
// C(I,J)<!M,repl> += A subassign
//------------------------------------------------------------------------------
// C: bitmap
// M: present, bitmap or full (not hypersparse or sparse)
// Mask_comp: true or false
// Mask_struct: true or false
// C_replace: true or false
// accum: present
// A: matrix (hyper, sparse, bitmap, or full), or scalar
// kind: assign, row assign, col assign, or subassign
// If C were full: entries can be deleted only if C_replace is true.
#undef GB_FREE_ALL
#define GB_FREE_ALL GB_FREE_ALL_FOR_BITMAP
{
//--------------------------------------------------------------------------
// get inputs
//--------------------------------------------------------------------------
GB_GET_C_A_SCALAR_FOR_BITMAP
GB_GET_MASK
GB_GET_ACCUM_FOR_BITMAP
//--------------------------------------------------------------------------
// to get the effective value of the mask entry mij
//--------------------------------------------------------------------------
#define GB_GET_MIJ(mij,pM) \
bool mij = (GBb_M (Mb, pM) && GB_MCAST (Mx, pM, msize)) ^ GB_MASK_COMP ;
//--------------------------------------------------------------------------
// assignment phase
//--------------------------------------------------------------------------
if (GB_SCALAR_ASSIGN)
{
//----------------------------------------------------------------------
// scalar assignment: C<M or !M>(I,J) += scalar
//----------------------------------------------------------------------
// for all IxJ
// get the effective value of the mask, via GB_GET_MIJ:
// for row assign: get mij = m(jC,0)
// for col assign: get mij = m(iC,0)
// for assign: get mij = M(iC,jC)
// for subassign: get mij = M(i,j)
// if complemented: mij = !mij
// if mij == 1:
// if Cb(p) == 0
// Cx(p) = scalar
// Cb(p) = 1 // C(iC,jC) is now present, insert
// else // if Cb(p) == 1:
// Cx(p) += scalar // C(iC,jC) still present, updated
// FUTURE: if C FULL: Cb is effectively all 1's and stays that way
#undef GB_IXJ_WORK
#define GB_IXJ_WORK(pC,pA) \
{ \
int64_t pM = GB_GET_pM ; \
GB_GET_MIJ (mij, pM) ; \
if (mij) \
{ \
int8_t cb = Cb [pC] ; \
if (cb == 0) \
{ \
/* Cx [pC] = scalar */ \
GB_COPY_cwork_to_C (Cx, pC, cwork, C_iso) ; \
Cb [pC] = 1 ; \
task_cnvals++ ; \
} \
else /* (cb == 1) */ \
{ \
/* Cx [pC] += scalar */ \
GB_ACCUMULATE_scalar (Cx, pC, ywork, C_iso) ; \
} \
} \
}
ASSERT (GB_ASSIGN_KIND == GB_ASSIGN || GB_ASSIGN_KIND == GB_SUBASSIGN) ;
switch (GB_ASSIGN_KIND)
{
case GB_ASSIGN :
// C<M>(I,J) += scalar where M has the same size as C
#undef GB_GET_pM
#define GB_GET_pM pC
#include "template/GB_bitmap_assign_IxJ_template.c"
break ;
case GB_SUBASSIGN :
// C(I,J)<M> += scalar where M has the same size as A
#undef GB_GET_pM
#define GB_GET_pM pA
#include "template/GB_bitmap_assign_IxJ_template.c"
break ;
default: ;
}
}
else
{
//----------------------------------------------------------------------
// matrix assignment: C<M or !M>(I,J) += A
//----------------------------------------------------------------------
// for all entries aij in A (A can be hyper, sparse, bitmap, or full)
// get the effective value of the mask, via GB_GET_MIJ:
// for row assign: get mij = m(jC,0)
// for col assign: get mij = m(iC,0)
// for assign: get mij = M(iC,jC)
// for subassign: get mij = M(i,j)
// if complemented: mij = !mij
// if mij == 1:
// if Cb(p) == 0
// Cx(p) = aij
// Cb(p) = 1 // C(iC,jC) is now present, insert
// task_cnvals++
// else // if Cb(p) == 1:
// Cx(p) += aij // C(iC,jC) still present, updated
// FUTURE: if C FULL: Cb is effectively all 1's and stays that way
#define GB_AIJ_WORK(pC,pA) \
{ \
int64_t pM = GB_GET_pM ; \
GB_GET_MIJ (mij, pM) ; \
if (mij) \
{ \
int8_t cb = Cb [pC] ; \
if (cb == 0) \
{ \
/* Cx [pC] = Ax [pA] */ \
GB_COPY_aij_to_C (Cx, pC, Ax, pA, A_iso, cwork, C_iso) ; \
Cb [pC] = 1 ; \
task_cnvals++ ; \
} \
else /* (cb == 1) */ \
{ \
/* Cx [pC] += Ax [pA] */ \
GB_ACCUMULATE_aij (Cx, pC, Ax, pA, A_iso, ywork, C_iso) ;\
} \
} \
}
switch (GB_ASSIGN_KIND)
{
case GB_ROW_ASSIGN :
// C<m>(i,J) += A where m is a 1-by-C->vdim row vector
#undef GB_GET_pM
#define GB_GET_pM jC
#include "template/GB_bitmap_assign_A_template.c"
break ;
case GB_COL_ASSIGN :
// C<m>(I,j) += A where m is a C->vlen-by-1 column vector
#undef GB_GET_pM
#define GB_GET_pM iC
#include "template/GB_bitmap_assign_A_template.c"
break ;
case GB_ASSIGN :
// C<M>(I,J) += A where M has the same size as C
#undef GB_GET_pM
#define GB_GET_pM pC
#include "template/GB_bitmap_assign_A_template.c"
break ;
case GB_SUBASSIGN :
// C(I,J)<M> += A where M has the same size as A
#undef GB_GET_pM
#define GB_GET_pM (iA + jA * nI)
#include "template/GB_bitmap_assign_A_template.c"
break ;
default: ;
}
}
//--------------------------------------------------------------------------
// C_replace phase
//--------------------------------------------------------------------------
if (C_replace)
{
// FUTURE: if C FULL: use two passes: first pass checks if any
// entry must be deleted. If none: do nothing. Else: change C
// to bitmap and do 2nd pass as below.
// for row assign: for all entries in C(i,:)
// for col assign: for all entries in C(:,j)
// for assign: for all entries in C(:,:)
// for subassign: for all entries in C(I,J)
// get effective value mij of the mask via GB_GET_MIJ
// if mij == 0 set Cb(p) = 0
#define GB_CIJ_WORK(pC) \
{ \
if (!mij) \
{ \
int8_t cb = Cb [pC] ; \
Cb [pC] = 0 ; \
task_cnvals -= (cb == 1) ; \
} \
}
#include "template/GB_bitmap_assign_C_template.c"
}
//--------------------------------------------------------------------------
// return result
//--------------------------------------------------------------------------
C->nvals = cnvals ;
ASSERT_MATRIX_OK (C, "final C for bitmap assign, M full, accum", GB0) ;
GB_FREE_ALL ;
return (GrB_SUCCESS) ;
}
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