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//------------------------------------------------------------------------------
// gb_mxstring_to_selectop: get GraphBLAS select operator from a built-in string
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Returns a GrB_IndexUnaryOp or a GxB_SelectOp
#include "gb_interface.h"
void gb_mxstring_to_selectop
(
// outputs: one of the outputs is non-NULL and the other NULL
GrB_IndexUnaryOp *idxunop, // GrB_IndexUnaryOp, if found
GxB_SelectOp *selop, // GxB_SelectOp if found
bool *thunk_required, // true if op requires a thunk scalar
bool *op_is_positional, // true if op is positional
// input/output:
int64_t *ithunk,
// inputs:
const mxArray *mxstring, // built-in string
const GrB_Type atype // type of A, or NULL if not present
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
CHECK_ERROR (gb_mxarray_is_empty (mxstring), "invalid selectop") ;
//--------------------------------------------------------------------------
// get the string
//--------------------------------------------------------------------------
#define LEN 256
char opstring [LEN+2] ;
gb_mxstring_to_string (opstring, LEN, mxstring, "select operator") ;
//--------------------------------------------------------------------------
// convert the string to a select operator
//--------------------------------------------------------------------------
gb_string_to_selectop (idxunop, selop, thunk_required, op_is_positional,
ithunk, opstring, atype) ;
}
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