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//------------------------------------------------------------------------------
// GxB_Desc_get: get a field in a descriptor
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB.h"
GrB_Info GxB_Desc_get // get a parameter from a descriptor
(
GrB_Descriptor desc, // descriptor to query; NULL is ok
GrB_Desc_Field field, // parameter to query
... // return value of the descriptor
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
GB_WHERE1 ("GxB_Desc_get (desc, field, &value)") ;
GB_RETURN_IF_FAULTY (desc) ;
//--------------------------------------------------------------------------
// get the parameter
//--------------------------------------------------------------------------
va_list ap ;
switch (field)
{
case GrB_OUTP :
{
va_start (ap, field) ;
GrB_Desc_Value *value = va_arg (ap, GrB_Desc_Value *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (value) ;
(*value) = (desc == NULL) ? GxB_DEFAULT : desc->out ;
}
break ;
case GrB_MASK :
{
va_start (ap, field) ;
GrB_Desc_Value *value = va_arg (ap, GrB_Desc_Value *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (value) ;
(*value) = (desc == NULL) ? GxB_DEFAULT : desc->mask ;
}
break ;
case GrB_INP0 :
{
va_start (ap, field) ;
GrB_Desc_Value *value = va_arg (ap, GrB_Desc_Value *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (value) ;
(*value) = (desc == NULL) ? GxB_DEFAULT : desc->in0 ;
}
break ;
case GrB_INP1 :
{
va_start (ap, field) ;
GrB_Desc_Value *value = va_arg (ap, GrB_Desc_Value *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (value) ;
(*value) = (desc == NULL) ? GxB_DEFAULT : desc->in1 ;
}
break ;
case GxB_DESCRIPTOR_NTHREADS : // same as GxB_NTHREADS
{
va_start (ap, field) ;
int *nthreads = va_arg (ap, int *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (nthreads) ;
int nth = (desc == NULL) ? GxB_DEFAULT : desc->nthreads_max ;
(*nthreads) = nth ;
}
break ;
case GxB_DESCRIPTOR_CHUNK : // same as GxB_CHUNK
{
va_start (ap, field) ;
double *chunk = va_arg (ap, double *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (chunk) ;
(*chunk) = (desc == NULL) ? GxB_DEFAULT : desc->chunk ;
}
break ;
case GxB_AxB_METHOD :
{
va_start (ap, field) ;
GrB_Desc_Value *value = va_arg (ap, GrB_Desc_Value *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (value) ;
(*value) = (desc == NULL) ? GxB_DEFAULT : desc->axb ;
}
break ;
case GxB_SORT :
{
va_start (ap, field) ;
int *do_sort = va_arg (ap, int *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (do_sort) ;
int s = (desc == NULL) ? GxB_DEFAULT : desc->do_sort ;
(*do_sort) = s ;
}
break ;
case GxB_COMPRESSION :
{
va_start (ap, field) ;
int *compression = va_arg (ap, int *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (compression) ;
int s = (desc == NULL) ? GxB_DEFAULT : desc->compression ;
(*compression) = s ;
}
break ;
case GxB_IMPORT :
{
va_start (ap, field) ;
int *method = va_arg (ap, int *) ;
va_end (ap) ;
GB_RETURN_IF_NULL (method) ;
int s = (desc == NULL) ? GxB_DEFAULT : desc->import ;
if (s != GxB_DEFAULT) s = GxB_SECURE_IMPORT ;
(*method) = s ;
}
break ;
default :
return (GrB_INVALID_VALUE) ;
}
#pragma omp flush
return (GrB_SUCCESS) ;
}
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