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//------------------------------------------------------------------------------
// gbselectopinfo : print a GraphBLAS selectop (for illustration only)
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Usage:
// gbselectopinfo (selectop)
#include "gb_interface.h"
#define USAGE "usage: GrB.selectopinfo (selectop) or GrB.selectopinfo (op,type)"
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
gb_usage (nargin >= 1 && nargin <= 2 && nargout == 0, USAGE) ;
//--------------------------------------------------------------------------
// construct the GraphBLAS selectop and print it
//--------------------------------------------------------------------------
#define LEN 256
char opstring [LEN+2] ;
gb_mxstring_to_string (opstring, LEN, pargin [0], "select operator") ;
GrB_Type type = NULL ;
if (nargin > 1)
{
type = gb_mxstring_to_type (pargin [1]) ;
CHECK_ERROR (type == NULL, "unknown type") ;
}
GxB_SelectOp selop = NULL ;
GrB_IndexUnaryOp idxunop = NULL ;
bool ignore1, ignore2 ;
int64_t ignore3 = 0 ;
gb_mxstring_to_selectop (&idxunop, &selop, &ignore1, &ignore2, &ignore3,
pargin [0], type) ;
if (selop != NULL)
{
OK (GxB_SelectOp_fprint (selop, opstring, GxB_COMPLETE, NULL)) ;
}
else
{
OK (GxB_IndexUnaryOp_fprint (idxunop, opstring, GxB_COMPLETE, NULL)) ;
}
GB_WRAPUP ;
}
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