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//------------------------------------------------------------------------------
// GB_concat_bitmap: concatenate an array of matrices into a bitmap matrix
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#define GB_FREE_WORKSPACE \
GB_WERK_POP (A_ek_slicing, int64_t) ; \
GB_Matrix_free (&T) ;
#define GB_FREE_ALL \
GB_FREE_WORKSPACE ; \
GB_phybix_free (C) ;
#include "concat/GB_concat.h"
#include "apply/GB_apply.h"
#include "jitifyer/GB_stringify.h"
GrB_Info GB_concat_bitmap // concatenate into a bitmap matrix
(
GrB_Matrix C, // input/output matrix for results
const bool C_iso, // if true, construct C as iso
const GB_void *cscalar, // iso value of C, if C is iso
const int64_t cnz, // # of entries in C
const GrB_Matrix *Tiles, // 2D row-major array of size m-by-n,
const uint64_t m,
const uint64_t n,
const int64_t *restrict Tile_rows, // size m+1
const int64_t *restrict Tile_cols, // size n+1
GB_Werk Werk
)
{
//--------------------------------------------------------------------------
// allocate C as a bitmap matrix
//--------------------------------------------------------------------------
GrB_Info info ;
GrB_Matrix A = NULL ;
GB_WERK_DECLARE (A_ek_slicing, int64_t) ;
struct GB_Matrix_opaque T_header ;
GrB_Matrix T = NULL ;
GrB_Type ctype = C->type ;
int64_t cvlen = C->vlen ;
int64_t cvdim = C->vdim ;
bool csc = C->is_csc ;
size_t csize = ctype->size ;
GB_Type_code ccode = ctype->code ;
if (!GB_IS_BITMAP (C) || C->iso != C_iso)
{
GB_phybix_free (C) ;
C->p_is_32 = false ; // OK: bitmap always has p_is_32 = false
C->j_is_32 = false ; // OK: bitmap always has j_is_32 = false
C->i_is_32 = false ; // OK: bitmap always has i_is_32 = false
GB_OK (GB_bix_alloc (C, GB_nnz_full (C), GxB_BITMAP, true, true,
C_iso)) ;
C->plen = -1 ;
C->nvec = cvdim ;
// C->nvec_nonempty = (cvlen > 0) ? cvdim : 0 ;
GB_nvec_nonempty_set (C, (cvlen > 0) ? cvdim : 0) ;
}
ASSERT (GB_IS_BITMAP (C)) ;
ASSERT (C->iso == C_iso) ;
int nthreads_max = GB_Context_nthreads_max ( ) ;
double chunk = GB_Context_chunk ( ) ;
int64_t nouter = csc ? n : m ;
int64_t ninner = csc ? m : n ;
if (C_iso)
{
memcpy (C->x, cscalar, csize) ;
}
//--------------------------------------------------------------------------
// concatenate all matrices into C
//--------------------------------------------------------------------------
for (int64_t outer = 0 ; outer < nouter ; outer++)
{
for (int64_t inner = 0 ; inner < ninner ; inner++)
{
//------------------------------------------------------------------
// get the tile A; transpose and typecast, if needed
//------------------------------------------------------------------
A = csc ? GB_TILE (Tiles, inner, outer)
: GB_TILE (Tiles, outer, inner) ;
if (csc != A->is_csc)
{
// T = (ctype) A'
GB_CLEAR_MATRIX_HEADER (T, &T_header) ;
GB_OK (GB_transpose_cast (T, ctype, csc, A, false, Werk)) ;
A = T ;
GB_MATRIX_WAIT (A) ;
}
ASSERT (C->is_csc == A->is_csc) ;
ASSERT (!GB_ANY_PENDING_WORK (A)) ;
GB_Type_code acode = A->type->code ;
//------------------------------------------------------------------
// determine where to place the tile in C
//------------------------------------------------------------------
// The tile A appears in vectors cvstart:cvend-1 of C, and indices
// cistart:ciend-1.
#ifdef GB_DEBUG
int64_t cvend ;
#endif
int64_t cvstart, cistart, ciend ;
if (csc)
{
// C and A are held by column
// Tiles is row-major and accessed in column order
cvstart = Tile_cols [outer] ;
#ifdef GB_DEBUG
cvend = Tile_cols [outer+1] ;
#endif
cistart = Tile_rows [inner] ;
ciend = Tile_rows [inner+1] ;
}
else
{
// C and A are held by row
// Tiles is row-major and accessed in row order
cvstart = Tile_rows [outer] ;
#ifdef GB_DEBUG
cvend = Tile_rows [outer+1] ;
#endif
cistart = Tile_cols [inner] ;
ciend = Tile_cols [inner+1] ;
}
#ifdef GB_DEBUG
int64_t avdim = cvend - cvstart ;
#endif
int64_t avlen = ciend - cistart ;
ASSERT (avdim == A->vdim) ;
ASSERT (avlen == A->vlen) ;
int64_t anz = GB_nnz_held (A) ;
//------------------------------------------------------------------
// copy the tile A into C
//------------------------------------------------------------------
info = GrB_NO_VALUE ;
if (C_iso)
{
//--------------------------------------------------------------
// C and A are iso
//--------------------------------------------------------------
#define GB_ISO_CONCAT
#define GB_COPY(pC,pA,A_iso) ;
#include "concat/template/GB_concat_bitmap_template.c"
info = GrB_SUCCESS ;
}
else
{
//--------------------------------------------------------------
// C is not iso, but A might be
//--------------------------------------------------------------
#ifndef GBCOMPACT
GB_IF_FACTORY_KERNELS_ENABLED
{
if (ccode == acode)
{
// no typecasting needed
switch (csize)
{
#undef GB_COPY
#define GB_COPY(pC,pA,A_iso) \
Cx [pC] = Ax [A_iso ? 0 : pA] ;
case GB_1BYTE : // uint8, int8, bool, or 1-byte user
#define GB_C_TYPE uint8_t
#define GB_A_TYPE uint8_t
#include "concat/template/GB_concat_bitmap_template.c"
info = GrB_SUCCESS ;
break ;
case GB_2BYTE : // uint16, int16, or 2-byte user
#define GB_C_TYPE uint16_t
#define GB_A_TYPE uint16_t
#include "concat/template/GB_concat_bitmap_template.c"
info = GrB_SUCCESS ;
break ;
case GB_4BYTE : // uint32, int32, float, or 4-byte
#define GB_C_TYPE uint32_t
#define GB_A_TYPE uint32_t
#include "concat/template/GB_concat_bitmap_template.c"
info = GrB_SUCCESS ;
break ;
case GB_8BYTE : // uint64, int64, double, float
// complex, or 8-byte user defined
#define GB_C_TYPE uint64_t
#define GB_A_TYPE uint64_t
#include "concat/template/GB_concat_bitmap_template.c"
info = GrB_SUCCESS ;
break ;
case GB_16BYTE : // double complex or 16-byte user
#define GB_C_TYPE GB_blob16
#define GB_A_TYPE GB_blob16
#include "concat/template/GB_concat_bitmap_template.c"
info = GrB_SUCCESS ;
break ;
default:;
}
}
}
#endif
}
//------------------------------------------------------------------
// via the JIT or PreJIT kernel
//------------------------------------------------------------------
if (info == GrB_NO_VALUE)
{
struct GB_UnaryOp_opaque op_header ;
GB_Operator op = GB_unop_identity (ctype, &op_header) ;
ASSERT_OP_OK (op, "identity op for concat bitmap", GB0) ;
info = GB_concat_bitmap_jit (C, cistart, cvstart, op, A, Werk) ;
}
//------------------------------------------------------------------
// via the generic kernel
//------------------------------------------------------------------
if (info == GrB_NO_VALUE)
{
// with typecasting or user-defined types
GBURBLE ("(generic concat) ") ;
GB_cast_function cast_A_to_C = GB_cast_factory (ccode, acode) ;
size_t asize = A->type->size ;
#define GB_C_TYPE GB_void
#define GB_A_TYPE GB_void
#undef GB_COPY
#define GB_COPY(pC,pA,A_iso) \
cast_A_to_C (Cx + (pC)*csize, \
Ax + (A_iso ? 0:(pA)*asize), asize) ;
#include "concat/template/GB_concat_bitmap_template.c"
info = GrB_SUCCESS ;
}
GB_FREE_WORKSPACE ;
GB_OK (info) ;
}
}
C->magic = GB_MAGIC ;
C->nvals = cnz ;
return (GrB_SUCCESS) ;
}
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