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//------------------------------------------------------------------------------
// GB_mex_random: construct a random matrix, double or Complex
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2020, All Rights Reserved.
// http://suitesparse.com See GraphBLAS/Doc/License.txt for license.
//------------------------------------------------------------------------------
#include "GB_mex.h"
#define USAGE "A = GB_mex_random (nrows, ncols, ntuples," \
" complex, seed, make_symmetric, no_self_edges, method)"
#define GET_DEEP_COPY ;
#define FREE_DEEP_COPY ;
#define FREE_ALL GB_mx_put_global (true, 0) ;
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
bool malloc_debug = GB_mx_get_global (true) ;
GrB_Matrix A = NULL ;
// check inputs
GB_WHERE (USAGE) ;
if (nargout > 1 || nargin == 0 || nargin > 8)
{
mexErrMsgTxt ("Usage: " USAGE) ;
}
int64_t GET_SCALAR (0, int64_t , nrows, 4) ;
int64_t GET_SCALAR (1, int64_t , ncols, 4) ;
int64_t GET_SCALAR (2, int64_t , ntuples, 0) ;
bool GET_SCALAR (3, bool , A_complex, false) ;
int64_t GET_SCALAR (4, uint64_t, seed, 1) ;
bool GET_SCALAR (5, bool , make_symmetric, false) ;
bool GET_SCALAR (6, bool , no_self_edges, false) ;
int GET_SCALAR (7, int , method, 0) ;
// construct the random matrix
simple_rand_seed (seed) ;
if (method == 3)
{
// test out-of-memory condition
METHOD (random_matrix (&A, make_symmetric, no_self_edges,
nrows, ncols, ntuples, method, A_complex)) ;
}
else
{
GB_MEX_TIC ;
GrB_Info info = random_matrix (&A, make_symmetric, no_self_edges,
nrows, ncols, ntuples, method, A_complex) ;
GB_MEX_TOC ;
if (info != GrB_SUCCESS)
{
mexErrMsgTxt ("random_matrix failed") ;
}
}
// return A to MATLAB
pargout [0] = GB_mx_Matrix_to_mxArray (&A, "A final", false) ;
FREE_ALL ;
}
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