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//------------------------------------------------------------------------------
// GxB_Matrix_Option_get: get an option in a matrix
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// GxB_Matrix_Option_get is a single va_arg-based method for any matrix option,
// of any type. The following functions are alternative methods that do not
// use va_arg (useful for compilers and interfaces that do not support va_arg):
//
// GxB_Matrix_Option_get_INT32 int32_t scalars
// GxB_Matrix_Option_get_FP64 double scalars
#include "GB.h"
//------------------------------------------------------------------------------
// GxB_Matrix_Option_get_INT32: get matrix options (int32_t scalars)
//------------------------------------------------------------------------------
GrB_Info GxB_Matrix_Option_get_INT32 // gets the current option of a matrix
(
GrB_Matrix A, // matrix to query
GxB_Option_Field field, // option to query
int32_t *value // return value of the matrix option
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
GB_WHERE1 ("GxB_Matrix_Option_get_INT32 (A, field, &value)") ;
GB_RETURN_IF_NULL_OR_FAULTY (A) ;
ASSERT_MATRIX_OK (A, "A to get option", GB0) ;
GB_RETURN_IF_NULL (value) ;
//--------------------------------------------------------------------------
// get the option
//--------------------------------------------------------------------------
switch (field)
{
case GxB_SPARSITY_CONTROL :
(*value) = A->sparsity_control ;
break ;
case GxB_SPARSITY_STATUS :
(*value) = GB_sparsity (A) ;
break ;
case GxB_FORMAT :
(*value) = (int32_t) ((A->is_csc) ? GxB_BY_COL : GxB_BY_ROW) ;
break ;
default :
return (GrB_INVALID_VALUE) ;
}
#pragma omp flush
return (GrB_SUCCESS) ;
}
//------------------------------------------------------------------------------
// GxB_Matrix_Option_get_FP64: get matrix options (double scalars)
//------------------------------------------------------------------------------
GrB_Info GxB_Matrix_Option_get_FP64 // gets the current option of a matrix
(
GrB_Matrix A, // matrix to query
GxB_Option_Field field, // option to query
double *value // return value of the matrix option
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
GB_WHERE1 ("GxB_Matrix_Option_get_FP64 (A, field, &value)") ;
GB_RETURN_IF_NULL_OR_FAULTY (A) ;
ASSERT_MATRIX_OK (A, "A to get option", GB0) ;
GB_RETURN_IF_NULL (value) ;
//--------------------------------------------------------------------------
// get the option
//--------------------------------------------------------------------------
switch (field)
{
case GxB_HYPER_SWITCH :
(*value) = (double) A->hyper_switch ;
break ;
case GxB_BITMAP_SWITCH :
(*value) = (double) A->bitmap_switch ;
break ;
default :
return (GrB_INVALID_VALUE) ;
}
#pragma omp flush
return (GrB_SUCCESS) ;
}
//------------------------------------------------------------------------------
// GxB_Matrix_Option_get: based on va_arg
//------------------------------------------------------------------------------
GrB_Info GxB_Matrix_Option_get // gets the current option of a matrix
(
GrB_Matrix A, // matrix to query
GxB_Option_Field field, // option to query
... // return value of the matrix option
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
GB_WHERE1 ("GxB_Matrix_Option_get (A, field, &value)") ;
GB_RETURN_IF_NULL_OR_FAULTY (A) ;
ASSERT_MATRIX_OK (A, "A to get option", GB0) ;
//--------------------------------------------------------------------------
// get the option
//--------------------------------------------------------------------------
va_list ap ;
switch (field)
{
case GxB_HYPER_SWITCH :
{
va_start (ap, field) ;
double *hyper_switch = va_arg (ap, double *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (hyper_switch) ;
(*hyper_switch) = (double) A->hyper_switch ;
}
break ;
case GxB_BITMAP_SWITCH :
{
va_start (ap, field) ;
double *bitmap_switch = va_arg (ap, double *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (bitmap_switch) ;
(*bitmap_switch) = (double) A->bitmap_switch ;
}
break ;
case GxB_SPARSITY_CONTROL :
{
va_start (ap, field) ;
int *sparsity_control = va_arg (ap, int *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (sparsity_control) ;
(*sparsity_control) = A->sparsity_control ;
}
break ;
case GxB_SPARSITY_STATUS :
{
va_start (ap, field) ;
int *sparsity = va_arg (ap, int *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (sparsity) ;
(*sparsity) = GB_sparsity (A) ;
}
break ;
case GxB_FORMAT :
{
va_start (ap, field) ;
GxB_Format_Value *format = va_arg (ap, GxB_Format_Value *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (format) ;
(*format) = (A->is_csc) ? GxB_BY_COL : GxB_BY_ROW ;
}
break ;
case GxB_IS_HYPER : // historical; use GxB_SPARSITY_STATUS instead
{
va_start (ap, field) ;
bool *A_is_hyper = va_arg (ap, bool *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (A_is_hyper) ;
(*A_is_hyper) = (GB_sparsity (A) == GxB_HYPERSPARSE) ;
}
break ;
default :
return (GrB_INVALID_VALUE) ;
}
#pragma omp flush
return (GrB_SUCCESS) ;
}
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