lapacke_cgges.c
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00001 /*****************************************************************************
00002   Copyright (c) 2010, Intel Corp.
00003   All rights reserved.
00004 
00005   Redistribution and use in source and binary forms, with or without
00006   modification, are permitted provided that the following conditions are met:
00007 
00008     * Redistributions of source code must retain the above copyright notice,
00009       this list of conditions and the following disclaimer.
00010     * Redistributions in binary form must reproduce the above copyright
00011       notice, this list of conditions and the following disclaimer in the
00012       documentation and/or other materials provided with the distribution.
00013     * Neither the name of Intel Corporation nor the names of its contributors
00014       may be used to endorse or promote products derived from this software
00015       without specific prior written permission.
00016 
00017   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00018   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
00021   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00022   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00023   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00024   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00025   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00026   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
00027   THE POSSIBILITY OF SUCH DAMAGE.
00028 ******************************************************************************
00029 * Contents: Native high-level C interface to LAPACK function cgges
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_cgges( int matrix_order, char jobvsl, char jobvsr, char sort,
00038                           LAPACK_C_SELECT2 selctg, lapack_int n,
00039                           lapack_complex_float* a, lapack_int lda,
00040                           lapack_complex_float* b, lapack_int ldb,
00041                           lapack_int* sdim, lapack_complex_float* alpha,
00042                           lapack_complex_float* beta, lapack_complex_float* vsl,
00043                           lapack_int ldvsl, lapack_complex_float* vsr,
00044                           lapack_int ldvsr )
00045 {
00046     lapack_int info = 0;
00047     lapack_int lwork = -1;
00048     lapack_logical* bwork = NULL;
00049     float* rwork = NULL;
00050     lapack_complex_float* work = NULL;
00051     lapack_complex_float work_query;
00052     if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
00053         LAPACKE_xerbla( "LAPACKE_cgges", -1 );
00054         return -1;
00055     }
00056 #ifndef LAPACK_DISABLE_NAN_CHECK
00057     /* Optionally check input matrices for NaNs */
00058     if( LAPACKE_cge_nancheck( matrix_order, n, n, a, lda ) ) {
00059         return -7;
00060     }
00061     if( LAPACKE_cge_nancheck( matrix_order, n, n, b, ldb ) ) {
00062         return -9;
00063     }
00064 #endif
00065     /* Allocate memory for working array(s) */
00066     if( LAPACKE_lsame( sort, 's' ) ) {
00067         bwork = (lapack_logical*)
00068             LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
00069         if( bwork == NULL ) {
00070             info = LAPACK_WORK_MEMORY_ERROR;
00071             goto exit_level_0;
00072         }
00073     }
00074     rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,8*n) );
00075     if( rwork == NULL ) {
00076         info = LAPACK_WORK_MEMORY_ERROR;
00077         goto exit_level_1;
00078     }
00079     /* Query optimal working array(s) size */
00080     info = LAPACKE_cgges_work( matrix_order, jobvsl, jobvsr, sort, selctg, n, a,
00081                                lda, b, ldb, sdim, alpha, beta, vsl, ldvsl, vsr,
00082                                ldvsr, &work_query, lwork, rwork, bwork );
00083     if( info != 0 ) {
00084         goto exit_level_2;
00085     }
00086     lwork = LAPACK_C2INT( work_query );
00087     /* Allocate memory for work arrays */
00088     work = (lapack_complex_float*)
00089         LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
00090     if( work == NULL ) {
00091         info = LAPACK_WORK_MEMORY_ERROR;
00092         goto exit_level_2;
00093     }
00094     /* Call middle-level interface */
00095     info = LAPACKE_cgges_work( matrix_order, jobvsl, jobvsr, sort, selctg, n, a,
00096                                lda, b, ldb, sdim, alpha, beta, vsl, ldvsl, vsr,
00097                                ldvsr, work, lwork, rwork, bwork );
00098     /* Release memory and exit */
00099     LAPACKE_free( work );
00100 exit_level_2:
00101     LAPACKE_free( rwork );
00102 exit_level_1:
00103     if( LAPACKE_lsame( sort, 's' ) ) {
00104         LAPACKE_free( bwork );
00105     }
00106 exit_level_0:
00107     if( info == LAPACK_WORK_MEMORY_ERROR ) {
00108         LAPACKE_xerbla( "LAPACKE_cgges", info );
00109     }
00110     return info;
00111 }


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