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//------------------------------------------------------------------------------
// GB_nvals: number of entries in a matrix
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB.h"
#define GB_FREE_ALL ;
GrB_Info GB_nvals // get the number of entries in a matrix
(
GrB_Index *nvals, // matrix has nvals entries
const GrB_Matrix A, // matrix to query
GB_Context Context
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
GB_RETURN_IF_NULL (nvals) ;
// leave zombies alone, and leave jumbled, but assemble any pending tuples
GB_MATRIX_WAIT_IF_PENDING (A) ;
//--------------------------------------------------------------------------
// return the number of entries in the matrix
//--------------------------------------------------------------------------
// Pending tuples are disjoint from the zombies and the live entries in the
// matrix. However, there can be duplicates in the pending tuples, and the
// number of duplicates has not yet been determined. Thus, zombies can be
// tolerated but pending tuples cannot.
ASSERT (GB_ZOMBIES_OK (A)) ;
ASSERT (GB_JUMBLED_OK (A)) ;
ASSERT (!GB_PENDING (A)) ;
(*nvals) = GB_nnz (A) - (A->nzombies) ;
return (GrB_SUCCESS) ;
}
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