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//------------------------------------------------------------------------------
// GB_mex_cumsum: cumulative using GB_cumsum
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB_mex.h"
#define USAGE "[p,k] = GB_mex_cumsum (c,nthreads,malloc_debug_count)"
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
bool malloc_debug = GB_mx_get_global (true) ;
// check inputs
if (nargin < 1 || nargin > 3 || nargout > 2)
{
mexErrMsgTxt ("Usage: " USAGE) ;
}
if (!mxIsClass (pargin [0], "int64"))
{
mexErrMsgTxt ("c must be an int64 array") ;
}
int64_t *c = mxGetData (pargin [0]) ;
int64_t n = (uint64_t) mxGetNumberOfElements (pargin [0]) ;
int GET_SCALAR (1, int, nthreads, 1) ;
int GET_SCALAR (2, int, malloc_debug_count, 2) ;
// make a copy of the input array (as a row vector)
pargout [0] = GB_mx_create_full (1, n+1, GrB_INT64) ;
int64_t *p = mxGetData (pargout [0]) ;
memcpy (p, c, n * sizeof (int64_t)) ;
p [n] = 0 ;
// create the 2nd output, kresult, if requested
int64_t *kresult = NULL ;
if (nargout > 1)
{
pargout [1] = GB_mx_create_full (1, 1, GrB_INT64) ;
kresult = mxGetData (pargout [1]) ;
}
if (!malloc_debug)
{
// normal usage
GB_cumsum (p, n, kresult, nthreads, NULL) ;
}
else
{
// test with malloc failures
// printf ("test cumsum with malloc_debug_count: %d\n", malloc_debug_count) ;
GB_Global_malloc_debug_set (true) ;
GB_Global_malloc_debug_count_set (malloc_debug_count) ;
GB_cumsum (p, n, kresult, nthreads, NULL) ;
GB_Global_malloc_debug_set (false) ;
}
// log the test coverage
GB_mx_put_global (true) ;
}
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