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//------------------------------------------------------------------------------
// GB_mex_Vector_isStoredElement: interface for x = v(i)
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB_mex.h"
#define USAGE "y = GB_mex_Vector_isStoredElement (v, I)"
#define FREE_ALL \
{ \
GrB_Vector_free_(&v) ; \
GB_mx_put_global (true) ; \
}
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
bool malloc_debug = GB_mx_get_global (true) ;
GrB_Vector v = NULL ;
bool *X = NULL ;
GrB_Index *I = NULL, ni = 0, I_range [3] ;
bool is_list ;
// check inputs
if (nargout > 1 || nargin < 2 || nargin > 4)
{
mexErrMsgTxt ("Usage: " USAGE) ;
}
#define GET_DEEP_COPY ;
#define FREE_DEEP_COPY ;
// get v (shallow copy)
v = GB_mx_mxArray_to_Vector (pargin [0], "v input", false, true) ;
if (v == NULL)
{
FREE_ALL ;
mexErrMsgTxt ("v failed") ;
}
// get I
if (!GB_mx_mxArray_to_indices (&I, pargin [1], &ni, I_range, &is_list))
{
FREE_ALL ;
mexErrMsgTxt ("I failed") ;
}
if (!is_list)
{
mexErrMsgTxt ("I must be a list") ;
}
// create output X
pargout [0] = GB_mx_create_full (ni, 1, GrB_BOOL) ;
X = (bool *) mxGetData (pargout [0]) ;
// x = v (i)
for (int64_t k = 0 ; k < ni ; k++)
{
GrB_Info info = GxB_Vector_isStoredElement(v, I [k]) ;
X [k] = (info == GrB_SUCCESS) ;
}
FREE_ALL ;
}
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