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//------------------------------------------------------------------------------
// GB_mex_Vector_extract: interface for w<mask> = accum (w,u(I))
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB_mex.h"
#define USAGE "w = GB_mex_Vector_extract w, mask, accum, u, I, desc)"
#define FREE_ALL \
{ \
GrB_Vector_free_(&w) ; \
GrB_Vector_free_(&mask) ; \
GrB_Vector_free_(&u) ; \
GrB_Descriptor_free_(&desc) ; \
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 w = NULL ;
GrB_Vector mask = NULL ;
GrB_Vector u = NULL ;
GrB_Descriptor desc = NULL ;
GrB_Index *I = NULL, ni = 0, I_range [3] ;
bool ignore ;
// check inputs
if (nargout > 1 || nargin < 5 || nargin > 6)
{
mexErrMsgTxt ("Usage: " USAGE) ;
}
// get w (make a deep copy)
#define GET_DEEP_COPY \
w = GB_mx_mxArray_to_Vector (pargin [0], "w input", true, true) ;
#define FREE_DEEP_COPY GrB_Vector_free_(&w) ;
GET_DEEP_COPY ;
if (w == NULL)
{
FREE_ALL ;
mexErrMsgTxt ("w failed") ;
}
// get mask (shallow copy)
mask = GB_mx_mxArray_to_Vector (pargin [1], "mask", false, false) ;
if (mask == NULL && !mxIsEmpty (pargin [1]))
{
FREE_ALL ;
mexErrMsgTxt ("mask failed") ;
}
// get u (shallow copy)
u = GB_mx_mxArray_to_Vector (pargin [3], "A input", false, true) ;
if (u == NULL)
{
FREE_ALL ;
mexErrMsgTxt ("u failed") ;
}
// get accum, if present
bool user_complex = (Complex != GxB_FC64)
&& (w->type == Complex || u->type == Complex) ;
GrB_BinaryOp accum ;
if (!GB_mx_mxArray_to_BinaryOp (&accum, pargin [2], "accum",
w->type, user_complex))
{
FREE_ALL ;
mexErrMsgTxt ("accum failed") ;
}
// get I
if (!GB_mx_mxArray_to_indices (&I, pargin [4], &ni, I_range, &ignore))
{
FREE_ALL ;
mexErrMsgTxt ("I failed") ;
}
// get desc
if (!GB_mx_mxArray_to_Descriptor (&desc, PARGIN (5), "desc"))
{
FREE_ALL ;
mexErrMsgTxt ("desc failed") ;
}
// w<mask> = accum (w,u(I))
METHOD (GrB_Vector_extract_(w, mask, accum, u, I, ni, desc)) ;
// return w as a struct and free the GraphBLAS w
pargout [0] = GB_mx_Vector_to_mxArray (&w, "w output", true) ;
FREE_ALL ;
}
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