105 lines
4.6 KiB
C
105 lines
4.6 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 clarft
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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_clarft_work( int matrix_layout, char direct, char storev,
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lapack_int n, lapack_int k,
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const lapack_complex_float* v, lapack_int ldv,
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const lapack_complex_float* tau,
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lapack_complex_float* t, lapack_int ldt )
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{
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lapack_int info = 0;
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lapack_int nrows_v, ncols_v;
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lapack_int ldt_t, ldv_t;
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lapack_complex_float *v_t= NULL, *t_t= NULL;
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if( matrix_layout == LAPACK_COL_MAJOR ) {
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/* Call LAPACK function and adjust info */
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LAPACK_clarft( &direct, &storev, &n, &k, v, &ldv, tau, t, &ldt );
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if( info < 0 ) {
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info = info - 1;
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}
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} else if( matrix_layout == LAPACK_ROW_MAJOR ) {
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nrows_v = LAPACKE_lsame( storev, 'c' ) ? n :
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( LAPACKE_lsame( storev, 'r' ) ? k : 1);
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ncols_v = LAPACKE_lsame( storev, 'c' ) ? k :
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( LAPACKE_lsame( storev, 'r' ) ? n : 1);
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ldt_t = MAX(1,k);
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ldv_t = MAX(1,nrows_v);
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/* Check leading dimension(s) */
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if( ldt < k ) {
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info = -10;
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LAPACKE_xerbla( "LAPACKE_clarft_work", info );
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return info;
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}
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if( ldv < ncols_v ) {
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info = -7;
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LAPACKE_xerbla( "LAPACKE_clarft_work", info );
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return info;
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}
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/* Allocate memory for temporary array(s) */
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v_t = (lapack_complex_float*)
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LAPACKE_malloc( sizeof(lapack_complex_float) *
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ldv_t * MAX(1,ncols_v) );
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if( v_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_0;
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}
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t_t = (lapack_complex_float*)
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LAPACKE_malloc( sizeof(lapack_complex_float) * ldt_t * MAX(1,k) );
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if( t_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_1;
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}
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/* Transpose input matrices */
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LAPACKE_cge_trans( matrix_layout, nrows_v, ncols_v, v, ldv, v_t, ldv_t );
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/* Call LAPACK function and adjust info */
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LAPACK_clarft( &direct, &storev, &n, &k, v_t, &ldv_t, tau, t_t,
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&ldt_t );
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info = 0; /* LAPACK call is ok! */
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/* Transpose output matrices */
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LAPACKE_cge_trans( LAPACK_COL_MAJOR, k, k, t_t, ldt_t, t, ldt );
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/* Release memory and exit */
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LAPACKE_free( t_t );
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exit_level_1:
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LAPACKE_free( v_t );
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exit_level_0:
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if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
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LAPACKE_xerbla( "LAPACKE_clarft_work", info );
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}
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} else {
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info = -1;
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LAPACKE_xerbla( "LAPACKE_clarft_work", info );
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}
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return info;
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}
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