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//------------------------------------------------------------------------------
// GB_mex_reduce_to_vector: c = accum(c,reduce_to_vector(A))
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Reduce a matrix to a vector: w<mask> = accum (w, reduce_to_vector (A))
// Test interface to GrB_reduce, which relies on GrB_Matrix_reduce_BinaryOp
// and GrB_Matrix_reduce_Monoid to reduce a matrix to a vector.
#include "GB_mex.h"
#define USAGE "w = GB_mex_reduce_to_vector (w, mask, accum, reduce, A, desc)"
#define FREE_ALL \
{ \
GrB_Matrix_free_(&A) ; \
GrB_Vector_free_(&w) ; \
GrB_Vector_free_(&mask) ; \
GrB_Descriptor_free_(&desc) ; \
if (!user_complex) \
{ \
GrB_Monoid_free_(&reduce) ; \
} \
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_Matrix A = NULL ;
GrB_Vector w = NULL ;
GrB_Vector mask = NULL ;
GrB_Descriptor desc = NULL ;
GrB_Monoid reduce = NULL ;
bool user_complex = false ;
// 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 A (shallow copy)
A = GB_mx_mxArray_to_Matrix (pargin [4], "A input", false, true) ;
if (A == NULL)
{
FREE_ALL ;
mexErrMsgTxt ("A failed") ;
}
// get reduce operator
user_complex = (Complex != GxB_FC64) && (A->type == Complex) ;
GrB_BinaryOp op ;
if (!GB_mx_mxArray_to_BinaryOp (&op, pargin [3], "op",
w->type, user_complex) || op == NULL)
{
FREE_ALL ;
mexErrMsgTxt ("op failed") ;
}
// get the reduce monoid
if (user_complex)
{
if (op == Complex_plus)
{
reduce = Complex_plus_monoid ;
}
else if (op == Complex_times)
{
reduce = Complex_times_monoid ;
}
else
{
FREE_ALL ;
mexErrMsgTxt ("reduce failed") ;
}
}
else
{
// create the reduce monoid
if (!GB_mx_Monoid (&reduce, op, malloc_debug))
{
FREE_ALL ;
mexErrMsgTxt ("reduce failed") ;
}
}
// get accum, if present
user_complex = (Complex != GxB_FC64) && (w->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 desc
if (!GB_mx_mxArray_to_Descriptor (&desc, PARGIN (5), "desc"))
{
FREE_ALL ;
mexErrMsgTxt ("desc failed") ;
}
// test GrB_Matrix_reduce_BinaryOp, if possible
if (op == GrB_MIN_INT8
|| op == GrB_MIN_INT16
|| op == GrB_MIN_INT32
|| op == GrB_MIN_INT64
|| op == GrB_MIN_UINT8
|| op == GrB_MIN_UINT16
|| op == GrB_MIN_UINT32
|| op == GrB_MIN_UINT64
|| op == GrB_MIN_FP32
|| op == GrB_MIN_FP64
|| op == GrB_MAX_INT8
|| op == GrB_MAX_INT16
|| op == GrB_MAX_INT32
|| op == GrB_MAX_INT64
|| op == GrB_MAX_UINT8
|| op == GrB_MAX_UINT16
|| op == GrB_MAX_UINT32
|| op == GrB_MAX_UINT64
|| op == GrB_MAX_FP32
|| op == GrB_MAX_FP64
|| op == GrB_PLUS_INT8
|| op == GrB_PLUS_INT16
|| op == GrB_PLUS_INT32
|| op == GrB_PLUS_INT64
|| op == GrB_PLUS_UINT8
|| op == GrB_PLUS_UINT16
|| op == GrB_PLUS_UINT32
|| op == GrB_PLUS_UINT64
|| op == GrB_PLUS_FP32
|| op == GrB_PLUS_FP64
|| op == GxB_PLUS_FC32
|| op == GxB_PLUS_FC64
|| op == GrB_TIMES_INT8
|| op == GrB_TIMES_INT16
|| op == GrB_TIMES_INT32
|| op == GrB_TIMES_INT64
|| op == GrB_TIMES_UINT8
|| op == GrB_TIMES_UINT16
|| op == GrB_TIMES_UINT32
|| op == GrB_TIMES_UINT64
|| op == GrB_TIMES_FP32
|| op == GrB_TIMES_FP64
|| op == GxB_TIMES_FC32
|| op == GxB_TIMES_FC64
|| op == GxB_ANY_BOOL
|| op == GxB_ANY_INT8
|| op == GxB_ANY_INT16
|| op == GxB_ANY_INT32
|| op == GxB_ANY_INT64
|| op == GxB_ANY_UINT8
|| op == GxB_ANY_UINT16
|| op == GxB_ANY_UINT32
|| op == GxB_ANY_UINT64
|| op == GxB_ANY_FP32
|| op == GxB_ANY_FP64
|| op == GxB_ANY_FC32
|| op == GxB_ANY_FC64
|| op == GrB_LOR
|| op == GrB_LAND
|| op == GrB_LXOR
|| op == GrB_LXNOR
|| op == GrB_BOR_UINT8
|| op == GrB_BOR_UINT16
|| op == GrB_BOR_UINT32
|| op == GrB_BOR_UINT64
|| op == GrB_BAND_UINT8
|| op == GrB_BAND_UINT16
|| op == GrB_BAND_UINT32
|| op == GrB_BAND_UINT64
|| op == GrB_BXOR_UINT8
|| op == GrB_BXOR_UINT16
|| op == GrB_BXOR_UINT32
|| op == GrB_BXOR_UINT64
|| op == GrB_BXNOR_UINT8
|| op == GrB_BXNOR_UINT16
|| op == GrB_BXNOR_UINT32
|| op == GrB_BXNOR_UINT64)
{
// w<mask> = accum (w, reduce_to_vector (A)) using a binary op
METHOD (GrB_Matrix_reduce_BinaryOp_(w, mask, accum, op, A, desc)) ;
}
else
{
// w<mask> = accum (w, reduce_to_vector (A)) using a monoid
METHOD (GrB_Matrix_reduce_Monoid_(w, mask, accum, reduce, A, 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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