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//------------------------------------------------------------------------------
// GB_bitmap_assign_noM_accum: assign to C bitmap, mask M is not present
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// C<>(I,J) += A assign
// C(I,J)<> += A subassign
// C<repl>(I,J) += A assign
// C(I,J)<repl> += A subassign
// C<!>(I,J) += A assign: no work to do
// C(I,J)<!> += A subassign: no work to do
// C<!,repl>(I,J) += A assign: just clear C(I,J) of all entries
// C(I,J)<!,repl> += A subassign: just clear C(I,J) of all entries
//------------------------------------------------------------------------------
// C: bitmap
// M: none
// 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 (all the same)
// If Mask_comp is true, then an empty mask is complemented. This case has
// already been handled by GB_assign_prep, which calls
// GB_bitmap_assign_noM_noaccum, with a scalar (which is unused).
#include "GB_bitmap_assign_methods.h"
#define GB_FREE_ALL ;
GrB_Info GB_bitmap_assign_noM_accum
(
// input/output:
GrB_Matrix C, // input/output matrix in bitmap format
// inputs:
const bool C_replace, // descriptor for C
const GrB_Index *I, // I index list
const int64_t nI,
const int Ikind,
const int64_t Icolon [3],
const GrB_Index *J, // J index list
const int64_t nJ,
const int Jkind,
const int64_t Jcolon [3],
// const GrB_Matrix M, // mask matrix, not present here
const bool Mask_comp, // true for !M, false for M
const bool Mask_struct, // true if M is structural, false if valued
const GrB_BinaryOp accum, // present
const GrB_Matrix A, // input matrix, not transposed
const void *scalar, // input scalar
const GrB_Type scalar_type, // type of input scalar
const int assign_kind, // row assign, col assign, assign, or subassign
GB_Context Context
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
GBURBLE_BITMAP_ASSIGN ("bit5", NULL, Mask_comp, accum,
Ikind, Jkind, assign_kind) ;
ASSERT_MATRIX_OK (C, "C for bitmap assign, no M, accum", GB0) ;
ASSERT_MATRIX_OK_OR_NULL (A, "A for bitmap assign, no M, accum", GB0) ;
//--------------------------------------------------------------------------
// get inputs
//--------------------------------------------------------------------------
GB_GET_C_BITMAP ; // C must be bitmap TODO: C full is OK
GB_GET_A_AND_SCALAR
GB_GET_ACCUM_FOR_BITMAP
//--------------------------------------------------------------------------
// do the assignment
//--------------------------------------------------------------------------
if (!Mask_comp)
{
//----------------------------------------------------------------------
// C(I,J) += A or += scalar
//----------------------------------------------------------------------
if (A == NULL)
{
//------------------------------------------------------------------
// scalar assignment: C(I,J) += scalar
//------------------------------------------------------------------
// for all entries in IxJ
#define GB_IXJ_WORK(pC,ignore) \
{ \
int8_t cb = Cb [pC] ; \
if (cb == 0) \
{ \
/* Cx [pC] = scalar */ \
GB_ASSIGN_SCALAR (pC) ; \
Cb [pC] = 1 ; \
task_cnvals++ ; \
} \
else \
{ \
/* Cx [pC] += scalar */ \
GB_ACCUM_SCALAR (pC) ; \
} \
}
#include "GB_bitmap_assign_IxJ_template.c"
}
else
{
//------------------------------------------------------------------
// matrix assignment: C(I,J) += A
//------------------------------------------------------------------
// for all entries aij in A (A hyper, sparse, bitmap, or full)
// if Cb(p) == 0
// Cx(p) = aij
// Cb(p) = 1 // C(iC,jC) is now present, insert
// else // if Cb(p) == 1:
// Cx(p) += aij // C(iC,jC) still present, updated
// task_cnvals++
#define GB_AIJ_WORK(pC,pA) \
{ \
int8_t cb = Cb [pC] ; \
if (cb == 0) \
{ \
/* Cx [pC] = Ax [pA] */ \
GB_ASSIGN_AIJ (pC, pA) ; \
Cb [pC] = 1 ; \
task_cnvals++ ; \
} \
else \
{ \
/* Cx [pC] += Ax [pA] */ \
GB_ACCUM_AIJ (pC, pA) ; \
} \
}
#include "GB_bitmap_assign_A_template.c"
}
}
#if 0
else if (C_replace)
{
//----------------------------------------------------------------------
// This case is handled by GB_assign_prep and is thus not needed here.
//----------------------------------------------------------------------
// mask not present yet complemented: C_replace phase only
// 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)
// M not present; so effective value of the mask is mij==0
// set Cb(p) = 0
#define GB_CIJ_WORK(pC) \
{ \
int8_t cb = Cb [pC] ; \
Cb [pC] = 0 ; \
task_cnvals -= (cb == 1) ; \
}
#include "GB_bitmap_assign_C_template.c"
}
#endif
//--------------------------------------------------------------------------
// return result
//--------------------------------------------------------------------------
C->nvals = cnvals ;
ASSERT_MATRIX_OK (C, "C for bitmap assign, no M, accum", GB0) ;
return (GrB_SUCCESS) ;
}
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