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//------------------------------------------------------------------------------
// GB_subassign_06n: C(I,J)<M> = A ; no S
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Method 06n: C(I,J)<M> = A ; no S
// M: present
// Mask_comp: false
// C_replace: false
// accum: NULL
// A: matrix
// S: none (see also GB_subassign_06s)
// FULL: if A and C are dense, then C remains dense.
// If A is sparse and C dense, C will likely become sparse, except if M(i,j)=0
// wherever A(i,j) is not present. So if M==A is aliased and A is sparse, then
// C remains dense. Need C(I,J)<A,struct>=A kernel. Then in that case, if C
// is dense it remains dense, even if A is sparse. If that change is made,
// this kernel can start with converting C to sparse if A is sparse.
// C is not bitmap: GB_bitmap_assign is used if C is bitmap.
// M and A are not bitmap: 06s is used instead, if M or A are bitmap.
#include "assign/GB_subassign_methods.h"
#include "jitifyer/GB_stringify.h"
#define GB_FREE_ALL ;
GrB_Info GB_subassign_06n
(
GrB_Matrix C,
// input:
#define C_replace false
const void *I, // I index list
const bool I_is_32,
const int64_t ni,
const int64_t nI,
const int Ikind,
const int64_t Icolon [3],
const void *J, // J index list
const bool J_is_32,
const int64_t nj,
const int64_t nJ,
const int Jkind,
const int64_t Jcolon [3],
const GrB_Matrix M,
#define Mask_comp false
const bool Mask_struct,
#define accum NULL
const GrB_Matrix A,
#define scalar NULL
#define scalar_type NULL
#define assign_kind GB_SUBASSIGN
GB_Werk Werk
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
GrB_Info info ;
GrB_Matrix S = NULL ; // not constructed
ASSERT (!GB_IS_BITMAP (C)) ; ASSERT (!GB_IS_FULL (C)) ;
ASSERT (!GB_IS_BITMAP (M)) ; // Method 06n is not used for M bitmap
ASSERT (!GB_IS_BITMAP (A)) ; // Method 06n is not used for A bitmap
ASSERT (!GB_any_aliased (C, M)) ; // NO ALIAS of C==M
ASSERT (!GB_any_aliased (C, A)) ; // NO ALIAS of C==A
ASSERT_MATRIX_OK (C, "C input for 06n", GB0) ;
ASSERT_MATRIX_OK (M, "M input for 06n", GB0) ;
ASSERT_MATRIX_OK (A, "A input for 06n", GB0) ;
GB_UNJUMBLE (C) ;
GB_UNJUMBLE (M) ;
GB_UNJUMBLE (A) ;
//--------------------------------------------------------------------------
// via the JIT or PreJIT kernel
//--------------------------------------------------------------------------
info = GB_subassign_jit (C,
/* C_replace: */ false,
I, I_is_32, ni, nI, Ikind, Icolon,
J, J_is_32, nj, nJ, Jkind, Jcolon,
M,
/* Mask_comp: */ false,
Mask_struct,
/* accum: */ NULL,
A,
/* scalar, scalar_type: */ NULL, NULL,
/* S: */ NULL,
GB_SUBASSIGN, GB_JIT_KERNEL_SUBASSIGN_06n, "subassign_06n",
Werk) ;
if (info != GrB_NO_VALUE)
{
return (info) ;
}
//--------------------------------------------------------------------------
// via the generic kernel
//--------------------------------------------------------------------------
GB_IDECL (I, const, u) ; GB_IPTR (I, I_is_32) ;
GB_IDECL (J, const, u) ; GB_IPTR (J, J_is_32) ;
GBURBLE ("(generic assign) ") ;
#define GB_GENERIC
#define GB_SCALAR_ASSIGN 0
#include "assign/include/GB_assign_shared_definitions.h"
#include "assign/template/GB_subassign_06n_template.c"
}
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