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//------------------------------------------------------------------------------
// GB_subassign_05d: C(:,:)<M> = scalar where C is full
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Method 05d: C(:,:)<M> = scalar ; no S, C is dense
// C: full
// M: present, any sparsity structure
// Mask_comp: false
// Mask_struct: true or false
// C_replace: false
// accum: NULL
// A: scalar
// S: none
#include "assign/GB_subassign_methods.h"
#include "assign/GB_subassign_dense.h"
#include "include/GB_unused.h"
#include "jitifyer/GB_stringify.h"
#ifndef GBCOMPACT
#include "GB_control.h"
#include "FactoryKernels/GB_as__include.h"
#endif
#define GB_GENERIC
#define GB_SCALAR_ASSIGN 1
#include "assign/include/GB_assign_shared_definitions.h"
#undef GB_FREE_ALL
#define GB_FREE_ALL ;
GrB_Info GB_subassign_05d
(
GrB_Matrix C,
// input:
const GrB_Matrix M,
const bool Mask_struct,
const void *scalar,
const GrB_Type scalar_type,
GB_Werk Werk
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
GrB_Info info ;
GrB_Matrix S = NULL ; // not constructed
ASSERT (!GB_any_aliased (C, M)) ; // NO ALIAS of C==M
ASSERT_MATRIX_OK (C, "C for subassign method_05d", GB0) ;
ASSERT (!GB_ZOMBIES (C)) ;
ASSERT (!GB_JUMBLED (C)) ;
ASSERT (!GB_PENDING (C)) ;
ASSERT (GB_IS_FULL (C)) ;
ASSERT_MATRIX_OK (M, "M for subassign method_05d", GB0) ;
ASSERT (!GB_ZOMBIES (M)) ;
ASSERT (GB_JUMBLED_OK (M)) ;
ASSERT (!GB_PENDING (M)) ;
//--------------------------------------------------------------------------
// get inputs
//--------------------------------------------------------------------------
int nthreads_max = GB_Context_nthreads_max ( ) ;
double chunk = GB_Context_chunk ( ) ;
// quick return if work has already been done by GB_assign_prep
if (C->iso) return (GrB_SUCCESS) ;
const GB_Type_code ccode = C->type->code ;
const size_t csize = C->type->size ;
GB_GET_SCALAR ;
//--------------------------------------------------------------------------
// Method 05d: C(:,:)<M> = scalar ; no S; C is dense
//--------------------------------------------------------------------------
// Time: Optimal: the method must iterate over all entries in M,
// and the time is O(nnz(M)).
//--------------------------------------------------------------------------
// via the factory kernel
//--------------------------------------------------------------------------
info = GrB_NO_VALUE ;
#ifndef GBCOMPACT
GB_IF_FACTORY_KERNELS_ENABLED
{
//----------------------------------------------------------------------
// define the worker for the switch factory
//----------------------------------------------------------------------
#define GB_sub05d(cname) GB (_subassign_05d_ ## cname)
#define GB_WORKER(cname) \
{ \
info = GB_sub05d (cname) (C, M, Mask_struct, cwork, Werk) ; \
} \
break ;
//----------------------------------------------------------------------
// launch the switch factory
//----------------------------------------------------------------------
// The scalar scalar_type is not needed, and there is no accum operator.
// This method uses cwork = (ctype) scalar, typecasted above, so it
// works for any scalar type. As a result, only a test of ccode is
// required.
// C<M> = x
#include "assign/factory/GB_assign_factory.c"
}
#endif
//--------------------------------------------------------------------------
// via the JIT or PreJIT kernel
//--------------------------------------------------------------------------
if (info == GrB_NO_VALUE)
{
info = GB_subassign_jit (C,
/* C_replace: */ false,
/* I, ni, nI, Ikind, Icolon: */ NULL, false, 0, 0, GB_ALL, NULL,
/* J, nj, nJ, Jkind, Jcolon: */ NULL, false, 0, 0, GB_ALL, NULL,
M,
/* Mask_comp: */ false,
Mask_struct,
/* accum: */ NULL,
/* A: */ NULL,
/* scalar, scalar_type: */ cwork, C->type,
/* S: */ NULL,
GB_SUBASSIGN, GB_JIT_KERNEL_SUBASSIGN_05d, "subassign_05d",
Werk) ;
}
//--------------------------------------------------------------------------
// via the generic kernel
//--------------------------------------------------------------------------
if (info == GrB_NO_VALUE)
{
#include "generic/GB_generic.h"
GB_BURBLE_MATRIX (M, "(generic C(:,:)<M>=x assign) ") ;
// Cx [pC] = cwork
#undef GB_COPY_cwork_to_C
#define GB_COPY_cwork_to_C(Cx, pC, cwork, C_iso) \
memcpy (Cx + ((pC)*csize), cwork, csize)
#include "assign/template/GB_subassign_05d_template.c"
info = GrB_SUCCESS ;
}
//--------------------------------------------------------------------------
// free workspace and return result
//--------------------------------------------------------------------------
if (info == GrB_SUCCESS)
{
ASSERT_MATRIX_OK (C, "C output for subassign method_05d", GB0) ;
}
return (info) ;
}
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