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// CXSparse/MATLAB/CSparse/cs_transpose_mex: transpose a sparse matrix
// CXSparse, Copyright (c) 2006-2022, Timothy A. Davis. All Rights Reserved.
// SPDX-License-Identifier: LGPL-2.1+
#include "cs_mex.h"
/* C = cs_transpose (A), computes C=A', where A must be sparse.
C = cs_transpose (A,kind) computes C=A.' if kind <= 0, C=A' if kind > 0 */
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
int64_t values ;
if (nargout > 1 || nargin < 1 || nargin > 2)
{
mexErrMsgTxt ("Usage: C = cs_transpose(A,kind)") ;
}
values = (nargin > 1) ? mxGetScalar (pargin [1]) : 1 ;
values = (values <= 0) ? -1 : 1 ;
if (mxIsComplex (pargin [0]))
{
#ifndef NCOMPLEX
cs_cl Amatrix, *A, *C ;
A = cs_cl_mex_get_sparse (&Amatrix, 0, pargin [0]) ; /* get A */
C = cs_cl_transpose (A, values) ; /* C = A' */
pargout [0] = cs_cl_mex_put_sparse (&C) ; /* return C */
#else
mexErrMsgTxt ("complex matrices not supported") ;
#endif
}
else
{
cs_dl Amatrix, *A, *C ;
A = cs_dl_mex_get_sparse (&Amatrix, 0, 1, pargin [0]) ; /* get A */
C = cs_dl_transpose (A, values) ; /* C = A' */
pargout [0] = cs_dl_mex_put_sparse (&C) ; /* return C */
}
}
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