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//------------------------------------------------------------------------------
// GB_matvec_set: set a field in a matrix or vector
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "get_set/GB_get_set.h"
#include "transpose/GB_transpose.h"
#define GB_FREE_ALL ;
//------------------------------------------------------------------------------
// GB_set_format: set A->is_csc and transpose if needed
//------------------------------------------------------------------------------
// This does nothing if (A->is_csc == new_csc) holds
static GrB_Info GB_set_format
(
GrB_Matrix A,
bool is_vector,
int format,
GB_Werk Werk
)
{
GrB_Info info ;
if (is_vector)
{
// the hint is ignored
return (GrB_SUCCESS) ;
}
if (! (format == GxB_BY_ROW || format == GxB_BY_COL))
{
return (GrB_INVALID_VALUE) ;
}
bool new_csc = (format != GxB_BY_ROW) ;
GB_OK (GB_transpose_in_place (A, new_csc, Werk)) ;
return (GrB_SUCCESS) ;
}
//------------------------------------------------------------------------------
// GB_set_p_control: set A->p_control and convert integers if needed
//------------------------------------------------------------------------------
static GrB_Info GB_set_p_control
(
GrB_Matrix A,
int ivalue
)
{
GrB_Info info ;
if (!(ivalue == 0 || ivalue == 32 || ivalue == 64))
{
return (GrB_INVALID_VALUE) ;
}
if (ivalue == 32 && !A->p_is_32)
{
// A->p is currently 64-bit; convert to 32-bit if possible
GB_OK (GB_convert_int (A, true, A->j_is_32, A->i_is_32, true)) ;
}
else if (ivalue == 64 && A->p_is_32)
{
// A->p is currently 32-bit; convert to 64-bit
GB_OK (GB_convert_int (A, false, A->j_is_32, A->i_is_32, true)) ;
}
A->p_control = ivalue ;
return (GrB_SUCCESS) ;
}
//------------------------------------------------------------------------------
// GB_set_j_control: set A->j_control and convert integers if needed
//------------------------------------------------------------------------------
static GrB_Info GB_set_j_control
(
GrB_Matrix A,
int ivalue
)
{
GrB_Info info ;
if (!(ivalue == 0 || ivalue == 32 || ivalue == 64))
{
return (GrB_INVALID_VALUE) ;
}
if (ivalue == 32 && !A->j_is_32)
{
// A->h is currently 64-bit; convert to 32-bit if possible
GB_OK (GB_convert_int (A, A->p_is_32, true, A->i_is_32, true)) ;
}
else if (ivalue == 64 && A->j_is_32)
{
// A->h is currently 32-bit; convert to 64-bit
GB_OK (GB_convert_int (A, A->p_is_32, false, A->i_is_32, true)) ;
}
A->j_control = ivalue ;
return (GrB_SUCCESS) ;
}
//------------------------------------------------------------------------------
// GB_set_i_control: set A->i_control and convert integers if needed
//------------------------------------------------------------------------------
static GrB_Info GB_set_i_control
(
GrB_Matrix A,
int ivalue
)
{
GrB_Info info ;
if (!(ivalue == 0 || ivalue == 32 || ivalue == 64))
{
return (GrB_INVALID_VALUE) ;
}
if (ivalue == 32 && !A->i_is_32)
{
// A->i is currently 64-bit; convert to 32-bit if possible
GB_OK (GB_convert_int (A, A->p_is_32, A->j_is_32, true, true)) ;
}
else if (ivalue == 64 && A->i_is_32)
{
// A->i is currently 32-bit; convert to 64-bit
GB_OK (GB_convert_int (A, A->p_is_32, A->j_is_32, false, true)) ;
}
A->i_control = ivalue ;
return (GrB_SUCCESS) ;
}
//------------------------------------------------------------------------------
// GB_matvec_set
//------------------------------------------------------------------------------
GrB_Info GB_matvec_set
(
GrB_Matrix A,
bool is_vector, // true if A is a GrB_Vector
int ivalue,
double dvalue,
int field,
GB_Werk Werk
)
{
GrB_Info info ;
GB_BURBLE_START ("GrB_set") ;
ASSERT_MATRIX_OK (A, "A before set", GB0) ;
GB_RETURN_IF_OUTPUT_IS_READONLY (A) ;
int format = ivalue ;
switch (field)
{
case GxB_HYPER_SWITCH :
if (is_vector)
{
return (GrB_INVALID_VALUE) ;
}
A->hyper_switch = (float) dvalue ;
break ;
case GxB_HYPER_HASH :
A->no_hyper_hash = !((bool) ivalue) ;
break ;
case GxB_BITMAP_SWITCH :
A->bitmap_switch = (float) dvalue ;
break ;
case GxB_SPARSITY_CONTROL :
A->sparsity_control = GB_sparsity_control (ivalue, (int64_t) (-1)) ;
break ;
case GxB_ISO :
if (ivalue)
{
// try to make the matrix iso-valued
if (!A->iso && GB_all_entries_are_iso (A))
{
// All entries in A are the same; convert A to iso
GBURBLE ("(set iso) ") ;
A->iso = true ;
GB_OK (GB_convert_any_to_iso (A, NULL)) ;
}
}
else
{
// make the matrix non-iso-valued
if (A->iso)
{
GBURBLE ("(set non-iso) ") ;
GB_OK (GB_convert_any_to_non_iso (A, true)) ;
}
}
break ;
case GrB_STORAGE_ORIENTATION_HINT :
format = (ivalue == GrB_COLMAJOR) ? GxB_BY_COL : GxB_BY_ROW ;
// fall through to the GxB_FORMAT case
case GxB_FORMAT :
GB_OK (GB_set_format (A, is_vector, format, Werk)) ;
break ;
case GxB_OFFSET_INTEGER_HINT :
GB_OK (GB_set_p_control (A, ivalue)) ;
break ;
case GxB_COLINDEX_INTEGER_HINT :
GB_OK (A->is_csc ? GB_set_j_control (A, ivalue) :
GB_set_i_control (A, ivalue)) ;
break ;
case GxB_ROWINDEX_INTEGER_HINT :
GB_OK (A->is_csc ? GB_set_i_control (A, ivalue) :
GB_set_j_control (A, ivalue)) ;
break ;
default :
return (GrB_INVALID_VALUE) ;
}
//--------------------------------------------------------------------------
// conform the matrix to its new desired sparsity structure
//--------------------------------------------------------------------------
ASSERT_MATRIX_OK (A, "A set before conform", GB0) ;
GB_OK (GB_conform (A, Werk)) ;
GB_BURBLE_END ;
ASSERT_MATRIX_OK (A, "A set after conform", GB0) ;
return (GrB_SUCCESS) ;
}
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