114 lines
4.6 KiB
C
114 lines
4.6 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 high-level C interface to LAPACK function cheevx
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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_cheevx( int matrix_order, char jobz, char range, char uplo,
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lapack_int n, lapack_complex_float* a,
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lapack_int lda, float vl, float vu, lapack_int il,
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lapack_int iu, float abstol, lapack_int* m, float* w,
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lapack_complex_float* z, lapack_int ldz,
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lapack_int* ifail )
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{
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lapack_int info = 0;
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lapack_int lwork = -1;
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lapack_int* iwork = NULL;
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float* rwork = NULL;
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lapack_complex_float* work = NULL;
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lapack_complex_float work_query;
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if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
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LAPACKE_xerbla( "LAPACKE_cheevx", -1 );
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return -1;
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}
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#ifndef LAPACK_DISABLE_NAN_CHECK
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/* Optionally check input matrices for NaNs */
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if( LAPACKE_che_nancheck( matrix_order, uplo, n, a, lda ) ) {
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return -6;
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}
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if( LAPACKE_s_nancheck( 1, &abstol, 1 ) ) {
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return -12;
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}
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if( LAPACKE_lsame( range, 'v' ) ) {
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if( LAPACKE_s_nancheck( 1, &vl, 1 ) ) {
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return -8;
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}
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}
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if( LAPACKE_lsame( range, 'v' ) ) {
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if( LAPACKE_s_nancheck( 1, &vu, 1 ) ) {
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return -9;
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}
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}
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#endif
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/* Allocate memory for working array(s) */
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iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
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if( iwork == NULL ) {
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info = LAPACK_WORK_MEMORY_ERROR;
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goto exit_level_0;
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}
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rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,7*n) );
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if( rwork == NULL ) {
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info = LAPACK_WORK_MEMORY_ERROR;
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goto exit_level_1;
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}
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/* Query optimal working array(s) size */
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info = LAPACKE_cheevx_work( matrix_order, jobz, range, uplo, n, a, lda, vl,
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vu, il, iu, abstol, m, w, z, ldz, &work_query,
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lwork, rwork, iwork, ifail );
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if( info != 0 ) {
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goto exit_level_2;
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}
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lwork = LAPACK_C2INT( work_query );
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/* Allocate memory for work arrays */
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work = (lapack_complex_float*)
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LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
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if( work == NULL ) {
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info = LAPACK_WORK_MEMORY_ERROR;
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goto exit_level_2;
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}
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/* Call middle-level interface */
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info = LAPACKE_cheevx_work( matrix_order, jobz, range, uplo, n, a, lda, vl,
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vu, il, iu, abstol, m, w, z, ldz, work, lwork,
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rwork, iwork, ifail );
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/* Release memory and exit */
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LAPACKE_free( work );
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exit_level_2:
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LAPACKE_free( rwork );
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exit_level_1:
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LAPACKE_free( iwork );
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exit_level_0:
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if( info == LAPACK_WORK_MEMORY_ERROR ) {
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LAPACKE_xerbla( "LAPACKE_cheevx", info );
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}
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return info;
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}
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