diff options
Diffstat (limited to 'LAPACKE/src/lapacke_sstedc.c')
| -rw-r--r-- | LAPACKE/src/lapacke_sstedc.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/LAPACKE/src/lapacke_sstedc.c b/LAPACKE/src/lapacke_sstedc.c new file mode 100644 index 00000000..f44d74d5 --- /dev/null +++ b/LAPACKE/src/lapacke_sstedc.c @@ -0,0 +1,95 @@ +/***************************************************************************** + 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 high-level C interface to LAPACK function sstedc +* Author: Intel Corporation +* Generated November, 2011 +*****************************************************************************/ + +#include "lapacke_utils.h" + +lapack_int LAPACKE_sstedc( int matrix_layout, char compz, lapack_int n, float* d, + float* e, float* z, lapack_int ldz ) +{ + lapack_int info = 0; + lapack_int liwork = -1; + lapack_int lwork = -1; + lapack_int* iwork = NULL; + float* work = NULL; + lapack_int iwork_query; + float work_query; + if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) { + LAPACKE_xerbla( "LAPACKE_sstedc", -1 ); + return -1; + } +#ifndef LAPACK_DISABLE_NAN_CHECK + /* Optionally check input matrices for NaNs */ + if( LAPACKE_s_nancheck( n, d, 1 ) ) { + return -4; + } + if( LAPACKE_s_nancheck( n-1, e, 1 ) ) { + return -5; + } + if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) { + if( LAPACKE_sge_nancheck( matrix_layout, n, n, z, ldz ) ) { + return -6; + } + } +#endif + /* Query optimal working array(s) size */ + info = LAPACKE_sstedc_work( matrix_layout, compz, n, d, e, z, ldz, + &work_query, lwork, &iwork_query, liwork ); + if( info != 0 ) { + goto exit_level_0; + } + liwork = (lapack_int)iwork_query; + lwork = (lapack_int)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; + } + work = (float*)LAPACKE_malloc( sizeof(float) * lwork ); + if( work == NULL ) { + info = LAPACK_WORK_MEMORY_ERROR; + goto exit_level_1; + } + /* Call middle-level interface */ + info = LAPACKE_sstedc_work( matrix_layout, compz, n, d, e, z, ldz, work, + lwork, iwork, liwork ); + /* Release memory and exit */ + LAPACKE_free( work ); +exit_level_1: + LAPACKE_free( iwork ); +exit_level_0: + if( info == LAPACK_WORK_MEMORY_ERROR ) { + LAPACKE_xerbla( "LAPACKE_sstedc", info ); + } + return info; +} |