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//------------------------------------------------------------------------------
// gboptype : determine the type of a binary operator from the input types
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Usage:
// optype = gboptype (atype, btype)
#include "gb_interface.h"
#define USAGE "usage: c = GrB.optype (atype, btype)"
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
gb_usage (nargin == 2 && nargout <= 1, USAGE) ;
//--------------------------------------------------------------------------
// get atype and btype
//--------------------------------------------------------------------------
GrB_Type atype = gb_mxstring_to_type (pargin [0]) ;
GrB_Type btype = gb_mxstring_to_type (pargin [1]) ;
//--------------------------------------------------------------------------
// determine the optype
//--------------------------------------------------------------------------
GrB_Type optype = gb_default_type (atype, btype) ;
CHECK_ERROR (optype == NULL, "unknown type") ;
//--------------------------------------------------------------------------
// return result as a string
//--------------------------------------------------------------------------
pargout [0] = gb_type_to_mxstring (optype) ;
GB_WRAPUP ;
}
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