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//------------------------------------------------------------------------------
// GB_reduce.h: definitions for GB_reduce
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#ifndef GB_REDUCE_H
#define GB_REDUCE_H
#include "GB.h"
GrB_Info GB_reduce_to_scalar // s = reduce_to_scalar (A)
(
void *c, // result scalar
const GrB_Type ctype, // the type of scalar, c
const GrB_BinaryOp accum, // for c = accum(c,s)
const GrB_Monoid reduce, // monoid to do the reduction
const GrB_Matrix A, // matrix to reduce
GB_Context Context
) ;
GrB_Info GB_reduce_to_vector // C<M> = accum (C,reduce(A))
(
GrB_Matrix C, // input/output for results, size n-by-1
const GrB_Matrix M, // optional M for C, unused if NULL
const GrB_BinaryOp accum, // optional accum for z=accum(C,T)
const GrB_Monoid monoid, // reduce monoid for T=reduce(A)
const GrB_Matrix A, // first input: matrix A
const GrB_Descriptor desc, // descriptor for C, M, and A
GB_Context Context
) ;
void GB_iso_reduce_to_scalar // s = reduce (A) where A is iso
(
GB_void *restrict s, // output scalar of type reduce->op->ztype
GrB_Monoid reduce, // monoid to use for the reduction
GrB_Matrix A, // matrix to reduce
GB_Context Context
) ;
void GB_iso_reduce_worker
(
GB_void *restrict s, // output scalar
GxB_binary_function freduce, // reduction function
GB_void *restrict a, // iso value of A
uint64_t n, // number of entries in A to reduce
size_t zsize // size of s and a
) ;
GrB_Info GB_Scalar_reduce
(
GrB_Scalar S, // result scalar
const GrB_BinaryOp accum, // optional accum for c=accum(c,t)
const GrB_Monoid monoid, // monoid to do the reduction
const GrB_Matrix A, // matrix to reduce
GB_Context Context
) ;
#endif
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