84 lines
4.2 KiB
C
84 lines
4.2 KiB
C
/*****************************************************************************
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Copyright (c) 2014, Intel Corp.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************
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* Contents: Native middle-level C interface to LAPACK function cunbdb
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* Author: Intel Corporation
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*****************************************************************************/
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#include "lapacke_utils.h"
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lapack_int LAPACKE_cunbdb_work( int matrix_layout, char trans, char signs,
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lapack_int m, lapack_int p, lapack_int q,
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lapack_complex_float* x11, lapack_int ldx11,
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lapack_complex_float* x12, lapack_int ldx12,
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lapack_complex_float* x21, lapack_int ldx21,
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lapack_complex_float* x22, lapack_int ldx22,
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float* theta, float* phi,
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lapack_complex_float* taup1,
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lapack_complex_float* taup2,
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lapack_complex_float* tauq1,
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lapack_complex_float* tauq2,
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lapack_complex_float* work, lapack_int lwork )
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{
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lapack_int info = 0;
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/* LAPACK function works with matrices in both layouts. It is supported
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* through TRANS parameter. So all conversion between layouts can be
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* completed in LAPACK function. See the table below which describes how
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* every LAPACKE call is forwarded to corresponding LAPACK call.
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*
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* matrix_layout | trans_LAPACKE | -> trans_LAPACK
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* | (trans) | (ltrans)
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* -----------------+---------------+----------------
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* LAPACK_COL_MAJOR | 'N' | -> 'N'
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* LAPACK_COL_MAJOR | 'T' | -> 'T'
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* LAPACK_ROW_MAJOR | 'N' | -> 'T'
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* LAPACK_ROW_MAJOR | 'T' | -> 'T'
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* (note that for row major layout trans parameter is ignored)
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*/
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if( matrix_layout == LAPACK_COL_MAJOR ||
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matrix_layout == LAPACK_ROW_MAJOR ) {
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char ltrans;
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if( !LAPACKE_lsame( trans, 't' ) && matrix_layout == LAPACK_COL_MAJOR ) {
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ltrans = 'n';
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} else {
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ltrans = 't';
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}
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/* Call LAPACK function and adjust info */
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LAPACK_cunbdb( <rans, &signs, &m, &p, &q, x11, &ldx11, x12, &ldx12,
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x21, &ldx21, x22, &ldx22, theta, phi, taup1, taup2,
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tauq1, tauq2, work, &lwork, &info );
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if( info < 0 ) {
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info = info - 1;
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}
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} else {
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info = -1;
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LAPACKE_xerbla( "LAPACKE_cunbdb_work", info );
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}
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return info;
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}
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