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//------------------------------------------------------------------------------
// GB_nnz_held.c: number of entries held in a matrix
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// GB_nnz_held(A) is the number of entries held in the data structure, including
// zombies and all entries in a bitmap. For hypersparse, sparse, and full,
// nnz(A) and nnz_held(A) are the same. For bitmap, nnz_held(A) is the
// same as the # of entries in a full matrix (# rows times # columns).
#include "GB.h"
int64_t GB_nnz_held
(
GrB_Matrix A
)
{
if (A == NULL || A->magic != GB_MAGIC || A->x == NULL)
{
// A is NULL or not initialized
return (0) ;
}
else if (A->p != NULL)
{
// A is sparse or hypersparse
return (A->nvals) ;
}
else
{
// A is bitmap or full
return (GB_nnz_full (A)) ;
}
}
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