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//------------------------------------------------------------------------------
// GB_mex_msort_2: sort using GB_msort_2
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB_mex.h"
#define USAGE "[I,J] = GB_mex_msort_2 (I,J,nthreads)"
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
bool malloc_debug = GB_mx_get_global (true) ;
// check inputs
if (nargin != 3 || nargout != 2)
{
mexErrMsgTxt ("Usage: " USAGE) ;
}
bool I_is_32 ;
if (mxIsClass (pargin [0], "uint32"))
{
I_is_32 = true ;
}
else if (mxIsClass (pargin [0], "uint64"))
{
I_is_32 = false ;
}
else
{
mexErrMsgTxt ("I must be a uint32 or uint64 array") ;
}
bool J_is_32 ;
if (mxIsClass (pargin [1], "uint32"))
{
J_is_32 = true ;
}
else if (mxIsClass (pargin [1], "uint64"))
{
J_is_32 = false ;
}
else
{
mexErrMsgTxt ("I must be a uint32 or uint64 array") ;
}
void *I = mxGetData (pargin [0]) ;
int64_t n = (uint64_t) mxGetNumberOfElements (pargin [0]) ;
void *J = mxGetData (pargin [1]) ;
if (n != (uint64_t) mxGetNumberOfElements (pargin [1]))
{
mexErrMsgTxt ("I and J must be the same length") ;
}
int GET_SCALAR (2, int, nthreads, 1) ;
// make a copy of the input arrays
pargout [0] = GB_mx_create_full (n, 1, I_is_32 ? GrB_UINT32 : GrB_UINT64) ;
void *Iout = mxGetData (pargout [0]) ;
memcpy (Iout, I, n * (I_is_32 ? sizeof (uint32_t) : sizeof (uint64_t))) ;
pargout [1] = GB_mx_create_full (n, 1, J_is_32 ? GrB_UINT32 : GrB_UINT64) ;
void *Jout = mxGetData (pargout [1]) ;
memcpy (Jout, J, n * (J_is_32 ? sizeof (uint32_t) : sizeof (uint64_t))) ;
GB_msort_2 (Iout, I_is_32, Jout, J_is_32, n, nthreads) ;
GB_mx_put_global (true) ;
}
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