diff options
Diffstat (limited to 'lapacke/src/lapacke_zgelsd.c')
| -rw-r--r-- | lapacke/src/lapacke_zgelsd.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/lapacke/src/lapacke_zgelsd.c b/lapacke/src/lapacke_zgelsd.c new file mode 100644 index 00000000..e80b5333 --- /dev/null +++ b/lapacke/src/lapacke_zgelsd.c @@ -0,0 +1,111 @@ +/***************************************************************************** + 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 high-level C interface to LAPACK function zgelsd +* Author: Intel Corporation +* Generated November, 2011 +*****************************************************************************/ + +#include "lapacke.h" +#include "lapacke_utils.h" + +lapack_int LAPACKE_zgelsd( int matrix_order, lapack_int m, lapack_int n, + lapack_int nrhs, lapack_complex_double* a, + lapack_int lda, lapack_complex_double* b, + lapack_int ldb, double* s, double rcond, + lapack_int* rank ) +{ + lapack_int info = 0; + lapack_int lwork = -1; + /* Additional scalars declarations for work arrays */ + lapack_int liwork; + lapack_int lrwork; + lapack_int* iwork = NULL; + double* rwork = NULL; + lapack_complex_double* work = NULL; + lapack_int iwork_query; + double rwork_query; + lapack_complex_double work_query; + if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) { + LAPACKE_xerbla( "LAPACKE_zgelsd", -1 ); + return -1; + } +#ifndef LAPACK_DISABLE_NAN_CHECK + /* Optionally check input matrices for NaNs */ + if( LAPACKE_zge_nancheck( matrix_order, m, n, a, lda ) ) { + return -5; + } + if( LAPACKE_zge_nancheck( matrix_order, MAX(m,n), nrhs, b, ldb ) ) { + return -7; + } + if( LAPACKE_d_nancheck( 1, &rcond, 1 ) ) { + return -10; + } +#endif + /* Query optimal working array(s) size */ + info = LAPACKE_zgelsd_work( matrix_order, m, n, nrhs, a, lda, b, ldb, s, + rcond, rank, &work_query, lwork, &rwork_query, + &iwork_query ); + if( info != 0 ) { + goto exit_level_0; + } + liwork = (lapack_int)iwork_query; + lrwork = (lapack_int)rwork_query; + lwork = LAPACK_Z2INT( work_query ); + /* Allocate memory for work arrays */ + iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork ); + if( iwork == NULL ) { + info = LAPACK_WORK_MEMORY_ERROR; + goto exit_level_0; + } + rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork ); + if( rwork == NULL ) { + info = LAPACK_WORK_MEMORY_ERROR; + goto exit_level_1; + } + work = (lapack_complex_double*) + LAPACKE_malloc( sizeof(lapack_complex_double) * lwork ); + if( work == NULL ) { + info = LAPACK_WORK_MEMORY_ERROR; + goto exit_level_2; + } + /* Call middle-level interface */ + info = LAPACKE_zgelsd_work( matrix_order, m, n, nrhs, a, lda, b, ldb, s, + rcond, rank, work, lwork, rwork, iwork ); + /* Release memory and exit */ + LAPACKE_free( work ); +exit_level_2: + LAPACKE_free( rwork ); +exit_level_1: + LAPACKE_free( iwork ); +exit_level_0: + if( info == LAPACK_WORK_MEMORY_ERROR ) { + LAPACKE_xerbla( "LAPACKE_zgelsd", info ); + } + return info; +} |