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//------------------------------------------------------------------------------
// GB_hyper_realloc: reallocate a matrix hyperlist
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Change the size of the A->h and A->p hyperlist.
// No change is made if A is not hypersparse.
// No change is made to A->Y.
#include "GB.h"
#include "GB_unused.h"
GrB_Info GB_hyper_realloc
(
GrB_Matrix A, // matrix with hyperlist to reallocate
int64_t plen_new, // new size of A->p and A->h
GB_Context Context
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
ASSERT (A != NULL) ;
ASSERT (GB_ZOMBIES_OK (A)) ; // pattern not accessed
ASSERT (GB_JUMBLED_OK (A)) ;
ASSERT (GB_PENDING_OK (A)) ;
//--------------------------------------------------------------------------
// reallocate the hyperlist
//--------------------------------------------------------------------------
if (GB_IS_HYPERSPARSE (A))
{
ASSERT (!A->p_shallow) ;
ASSERT (!A->h_shallow) ;
// old size of A->p and A->h
int64_t plen_old = A->plen ;
plen_new = GB_IMAX (1, plen_new) ;
// change the size of A->h and A->p
bool ok1 = true, ok2 = true ;
GB_REALLOC (A->p, plen_new+1, int64_t, &(A->p_size), &ok1, Context) ;
GB_REALLOC (A->h, plen_new, int64_t, &(A->h_size), &ok2, Context) ;
bool ok = ok1 && ok2 ;
// always succeeds if the space shrinks
ASSERT (GB_IMPLIES (plen_new <= plen_old, ok)) ;
if (!ok)
{
// out of memory
GB_phybix_free (A) ;
return (GrB_OUT_OF_MEMORY) ;
}
// size of A->p and A->h has been changed
A->plen = plen_new ;
}
//--------------------------------------------------------------------------
// return result
//--------------------------------------------------------------------------
return (GrB_SUCCESS) ;
}
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