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//------------------------------------------------------------------------------
// GB_concat_bitmap: concatenate an array of matrices into a bitmap matrix
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, 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 "GB_concat.h"
#include "GB_unused.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 io
const int64_t cnz, // # of entries in C
const GrB_Matrix *Tiles, // 2D row-major array of size m-by-n,
const GrB_Index m,
const GrB_Index n,
const int64_t *restrict Tile_rows, // size m+1
const int64_t *restrict Tile_cols, // size n+1
GB_Context Context
)
{
//--------------------------------------------------------------------------
// 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))
{
// set C->iso = C_iso OK
GB_phybix_free (C) ;
GB_OK (GB_bix_alloc (C, GB_nnz_full (C), GxB_BITMAP, true, true, C_iso,
Context)) ;
C->plen = -1 ;
C->nvec = cvdim ;
C->nvec_nonempty = (cvlen > 0) ? cvdim : 0 ;
}
ASSERT (GB_IS_BITMAP (C)) ;
GB_GET_NTHREADS_MAX (nthreads_max, chunk, Context) ;
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_STATIC_HEADER (T, &T_header) ;
GB_OK (GB_transpose_cast (T, ctype, csc, A, false, Context)) ;
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.
int64_t cvstart, cvend, cistart, ciend ;
if (csc)
{
// C and A are held by column
// Tiles is row-major and accessed in column order
cvstart = Tile_cols [outer] ;
cvend = Tile_cols [outer+1] ;
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] ;
cvend = Tile_rows [outer+1] ;
cistart = Tile_cols [inner] ;
ciend = Tile_cols [inner+1] ;
}
int64_t avdim = cvend - cvstart ;
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
//------------------------------------------------------------------
bool done = false ;
if (C_iso)
{
//--------------------------------------------------------------
// C and A are iso
//--------------------------------------------------------------
#define GB_ISO_CONCAT
#define GB_COPY(pC,pA,A_iso) ;
#include "GB_concat_bitmap_template.c"
}
else
{
//--------------------------------------------------------------
// C is not iso, but A might be
//--------------------------------------------------------------
#ifndef GBCUDA_DEV
if (ccode == acode)
{
// no typecasting needed
switch (csize)
{
#undef GB_COPY
#define GB_COPY(pC,pA,A_iso) \
Cx [pC] = GBX (Ax, pA, A_iso) ;
case GB_1BYTE : // uint8, int8, bool, or 1-byte user
#define GB_CTYPE uint8_t
#include "GB_concat_bitmap_template.c"
break ;
case GB_2BYTE : // uint16, int16, or 2-byte user
#define GB_CTYPE uint16_t
#include "GB_concat_bitmap_template.c"
break ;
case GB_4BYTE : // uint32, int32, float, or 4-byte user
#define GB_CTYPE uint32_t
#include "GB_concat_bitmap_template.c"
break ;
case GB_8BYTE : // uint64, int64, double, float complex,
// or 8-byte user defined
#define GB_CTYPE uint64_t
#include "GB_concat_bitmap_template.c"
break ;
case GB_16BYTE : // double complex or 16-byte user
#define GB_CTYPE GB_blob16
#include "GB_concat_bitmap_template.c"
break ;
default:;
}
}
#endif
}
if (!done)
{
// with typecasting or user-defined types
GB_cast_function cast_A_to_C = GB_cast_factory (ccode, acode) ;
size_t asize = A->type->size ;
#define GB_CTYPE 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 "GB_concat_bitmap_template.c"
}
GB_FREE_WORKSPACE ;
}
}
C->magic = GB_MAGIC ;
C->nvals = cnz ;
return (GrB_SUCCESS) ;
}
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