diff options
Diffstat (limited to 'lapacke/src/lapacke_dgeqrf_work.c')
| -rw-r--r-- | lapacke/src/lapacke_dgeqrf_work.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/lapacke/src/lapacke_dgeqrf_work.c b/lapacke/src/lapacke_dgeqrf_work.c new file mode 100644 index 00000000..5370c84e --- /dev/null +++ b/lapacke/src/lapacke_dgeqrf_work.c @@ -0,0 +1,88 @@ +/***************************************************************************** + Copyright (c) 2011, 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 dgeqrf +* Author: Intel Corporation +* Generated November, 2011 +*****************************************************************************/ + +#include "lapacke.h" +#include "lapacke_utils.h" + +lapack_int LAPACKE_dgeqrf_work( int matrix_order, lapack_int m, lapack_int n, + double* a, lapack_int lda, double* tau, + double* work, lapack_int lwork ) +{ + lapack_int info = 0; + if( matrix_order == LAPACK_COL_MAJOR ) { + /* Call LAPACK function and adjust info */ + LAPACK_dgeqrf( &m, &n, a, &lda, tau, work, &lwork, &info ); + if( info < 0 ) { + info = info - 1; + } + } else if( matrix_order == LAPACK_ROW_MAJOR ) { + lapack_int lda_t = MAX(1,m); + double* a_t = NULL; + /* Check leading dimension(s) */ + if( lda < n ) { + info = -5; + LAPACKE_xerbla( "LAPACKE_dgeqrf_work", info ); + return info; + } + /* Query optimal working array(s) size if requested */ + if( lwork == -1 ) { + LAPACK_dgeqrf( &m, &n, a, &lda_t, tau, work, &lwork, &info ); + return (info < 0) ? (info - 1) : info; + } + /* Allocate memory for temporary array(s) */ + a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) ); + if( a_t == NULL ) { + info = LAPACK_TRANSPOSE_MEMORY_ERROR; + goto exit_level_0; + } + /* Transpose input matrices */ + LAPACKE_dge_trans( matrix_order, m, n, a, lda, a_t, lda_t ); + /* Call LAPACK function and adjust info */ + LAPACK_dgeqrf( &m, &n, a_t, &lda_t, tau, work, &lwork, &info ); + if( info < 0 ) { + info = info - 1; + } + /* Transpose output matrices */ + LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda ); + /* Release memory and exit */ + LAPACKE_free( a_t ); +exit_level_0: + if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) { + LAPACKE_xerbla( "LAPACKE_dgeqrf_work", info ); + } + } else { + info = -1; + LAPACKE_xerbla( "LAPACKE_dgeqrf_work", info ); + } + return info; +} |