107 lines
4.8 KiB
C
107 lines
4.8 KiB
C
/*****************************************************************************
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Copyright (c) 2011, 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 sstevr
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* Author: Intel Corporation
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* Generated November, 2011
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*****************************************************************************/
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#include "lapacke_utils.h"
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lapack_int LAPACKE_sstevr_work( int matrix_order, char jobz, char range,
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lapack_int n, float* d, float* e, float vl,
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float vu, lapack_int il, lapack_int iu,
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float abstol, lapack_int* m, float* w, float* z,
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lapack_int ldz, lapack_int* isuppz, float* work,
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lapack_int lwork, lapack_int* iwork,
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lapack_int liwork )
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{
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lapack_int info = 0;
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if( matrix_order == LAPACK_COL_MAJOR ) {
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/* Call LAPACK function and adjust info */
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LAPACK_sstevr( &jobz, &range, &n, d, e, &vl, &vu, &il, &iu, &abstol, m,
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w, z, &ldz, isuppz, work, &lwork, iwork, &liwork,
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&info );
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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_order == LAPACK_ROW_MAJOR ) {
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lapack_int ncols_z = ( LAPACKE_lsame( range, 'a' ) ||
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LAPACKE_lsame( range, 'v' ) ) ? n :
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( LAPACKE_lsame( range, 'i' ) ? (iu-il+1) : 1);
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lapack_int ldz_t = MAX(1,n);
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float* z_t = NULL;
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/* Check leading dimension(s) */
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if( ldz < ncols_z ) {
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info = -15;
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LAPACKE_xerbla( "LAPACKE_sstevr_work", info );
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return info;
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}
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/* Query optimal working array(s) size if requested */
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if( liwork == -1 || lwork == -1 ) {
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LAPACK_sstevr( &jobz, &range, &n, d, e, &vl, &vu, &il, &iu, &abstol,
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m, w, z, &ldz_t, isuppz, work, &lwork, iwork,
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&liwork, &info );
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return (info < 0) ? (info - 1) : info;
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}
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/* Allocate memory for temporary array(s) */
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if( LAPACKE_lsame( jobz, 'v' ) ) {
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z_t = (float*)
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LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,ncols_z) );
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if( z_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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}
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/* Call LAPACK function and adjust info */
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LAPACK_sstevr( &jobz, &range, &n, d, e, &vl, &vu, &il, &iu, &abstol, m,
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w, z_t, &ldz_t, isuppz, work, &lwork, iwork, &liwork,
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&info );
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if( info < 0 ) {
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info = info - 1;
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}
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/* Transpose output matrices */
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if( LAPACKE_lsame( jobz, 'v' ) ) {
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LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, ncols_z, z_t, ldz_t, z,
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ldz );
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}
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/* Release memory and exit */
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if( LAPACKE_lsame( jobz, 'v' ) ) {
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LAPACKE_free( z_t );
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}
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exit_level_0:
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if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
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LAPACKE_xerbla( "LAPACKE_sstevr_work", info );
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}
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} else {
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info = -1;
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LAPACKE_xerbla( "LAPACKE_sstevr_work", info );
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}
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return info;
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}
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