diff options
Diffstat (limited to 'LAPACKE/src/lapacke_dlarft_work.c')
| -rw-r--r-- | LAPACKE/src/lapacke_dlarft_work.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/LAPACKE/src/lapacke_dlarft_work.c b/LAPACKE/src/lapacke_dlarft_work.c new file mode 100644 index 00000000..db818d4e --- /dev/null +++ b/LAPACKE/src/lapacke_dlarft_work.c @@ -0,0 +1,102 @@ +/***************************************************************************** + Copyright (c) 2014, Intel Corp. + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + * Neither the name of Intel Corporation nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + THE POSSIBILITY OF SUCH DAMAGE. +***************************************************************************** +* Contents: Native middle-level C interface to LAPACK function dlarft +* Author: Intel Corporation +* Generated November, 2011 +*****************************************************************************/ + +#include "lapacke_utils.h" + +lapack_int LAPACKE_dlarft_work( int matrix_layout, char direct, char storev, + lapack_int n, lapack_int k, const double* v, + lapack_int ldv, const double* tau, double* t, + lapack_int ldt ) +{ + lapack_int info = 0; + lapack_int nrows_v, ncols_v; + lapack_int ldt_t, ldv_t; + double *v_t = NULL, *t_t = NULL; + if( matrix_layout == LAPACK_COL_MAJOR ) { + /* Call LAPACK function and adjust info */ + LAPACK_dlarft( &direct, &storev, &n, &k, v, &ldv, tau, t, &ldt ); + if( info < 0 ) { + info = info - 1; + } + } else if( matrix_layout == LAPACK_ROW_MAJOR ) { + nrows_v = LAPACKE_lsame( storev, 'c' ) ? n : + ( LAPACKE_lsame( storev, 'r' ) ? k : 1); + ncols_v = LAPACKE_lsame( storev, 'c' ) ? k : + ( LAPACKE_lsame( storev, 'r' ) ? n : 1); + ldt_t = MAX(1,k); + ldv_t = MAX(1,nrows_v); + /* Check leading dimension(s) */ + if( ldt < k ) { + info = -10; + LAPACKE_xerbla( "LAPACKE_dlarft_work", info ); + return info; + } + if( ldv < ncols_v ) { + info = -7; + LAPACKE_xerbla( "LAPACKE_dlarft_work", info ); + return info; + } + /* Allocate memory for temporary array(s) */ + v_t = (double*) + LAPACKE_malloc( sizeof(double) * ldv_t * MAX(1,ncols_v) ); + if( v_t == NULL ) { + info = LAPACK_TRANSPOSE_MEMORY_ERROR; + goto exit_level_0; + } + t_t = (double*)LAPACKE_malloc( sizeof(double) * ldt_t * MAX(1,k) ); + if( t_t == NULL ) { + info = LAPACK_TRANSPOSE_MEMORY_ERROR; + goto exit_level_1; + } + /* Transpose input matrices */ + LAPACKE_dge_trans( matrix_layout, nrows_v, ncols_v, v, ldv, v_t, ldv_t ); + /* Call LAPACK function and adjust info */ + LAPACK_dlarft( &direct, &storev, &n, &k, v_t, &ldv_t, tau, t_t, + &ldt_t ); + info = 0; /* LAPACK call is ok! */ + /* Transpose output matrices */ + LAPACKE_dge_trans( LAPACK_COL_MAJOR, k, k, t_t, ldt_t, t, ldt ); + /* Release memory and exit */ + LAPACKE_free( t_t ); +exit_level_1: + LAPACKE_free( v_t ); +exit_level_0: + if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) { + LAPACKE_xerbla( "LAPACKE_dlarft_work", info ); + } + } else { + info = -1; + LAPACKE_xerbla( "LAPACKE_dlarft_work", info ); + } + return info; +} |