lapacke_ssbgvx_work.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 middle-level C interface to LAPACK function ssbgvx
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_ssbgvx_work( int matrix_order, char jobz, char range,
00038                                 char uplo, lapack_int n, lapack_int ka,
00039                                 lapack_int kb, float* ab, lapack_int ldab,
00040                                 float* bb, lapack_int ldbb, float* q,
00041                                 lapack_int ldq, float vl, float vu,
00042                                 lapack_int il, lapack_int iu, float abstol,
00043                                 lapack_int* m, float* w, float* z,
00044                                 lapack_int ldz, float* work, lapack_int* iwork,
00045                                 lapack_int* ifail )
00046 {
00047     lapack_int info = 0;
00048     if( matrix_order == LAPACK_COL_MAJOR ) {
00049         /* Call LAPACK function and adjust info */
00050         LAPACK_ssbgvx( &jobz, &range, &uplo, &n, &ka, &kb, ab, &ldab, bb, &ldbb,
00051                        q, &ldq, &vl, &vu, &il, &iu, &abstol, m, w, z, &ldz,
00052                        work, iwork, ifail, &info );
00053         if( info < 0 ) {
00054             info = info - 1;
00055         }
00056     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00057         lapack_int ldab_t = MAX(1,ka+1);
00058         lapack_int ldbb_t = MAX(1,kb+1);
00059         lapack_int ldq_t = MAX(1,n);
00060         lapack_int ldz_t = MAX(1,n);
00061         float* ab_t = NULL;
00062         float* bb_t = NULL;
00063         float* q_t = NULL;
00064         float* z_t = NULL;
00065         /* Check leading dimension(s) */
00066         if( ldab < n ) {
00067             info = -9;
00068             LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
00069             return info;
00070         }
00071         if( ldbb < n ) {
00072             info = -11;
00073             LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
00074             return info;
00075         }
00076         if( ldq < n ) {
00077             info = -13;
00078             LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
00079             return info;
00080         }
00081         if( ldz < n ) {
00082             info = -22;
00083             LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
00084             return info;
00085         }
00086         /* Allocate memory for temporary array(s) */
00087         ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
00088         if( ab_t == NULL ) {
00089             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00090             goto exit_level_0;
00091         }
00092         bb_t = (float*)LAPACKE_malloc( sizeof(float) * ldbb_t * MAX(1,n) );
00093         if( bb_t == NULL ) {
00094             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00095             goto exit_level_1;
00096         }
00097         if( LAPACKE_lsame( jobz, 'v' ) ) {
00098             q_t = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
00099             if( q_t == NULL ) {
00100                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00101                 goto exit_level_2;
00102             }
00103         }
00104         if( LAPACKE_lsame( jobz, 'v' ) ) {
00105             z_t = (float*)LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,n) );
00106             if( z_t == NULL ) {
00107                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00108                 goto exit_level_3;
00109             }
00110         }
00111         /* Transpose input matrices */
00112         LAPACKE_ssb_trans( matrix_order, uplo, n, ka, ab, ldab, ab_t, ldab_t );
00113         LAPACKE_ssb_trans( matrix_order, uplo, n, kb, bb, ldbb, bb_t, ldbb_t );
00114         /* Call LAPACK function and adjust info */
00115         LAPACK_ssbgvx( &jobz, &range, &uplo, &n, &ka, &kb, ab_t, &ldab_t, bb_t,
00116                        &ldbb_t, q_t, &ldq_t, &vl, &vu, &il, &iu, &abstol, m, w,
00117                        z_t, &ldz_t, work, iwork, ifail, &info );
00118         if( info < 0 ) {
00119             info = info - 1;
00120         }
00121         /* Transpose output matrices */
00122         LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, ka, ab_t, ldab_t, ab,
00123                            ldab );
00124         LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, kb, bb_t, ldbb_t, bb,
00125                            ldbb );
00126         if( LAPACKE_lsame( jobz, 'v' ) ) {
00127             LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
00128         }
00129         if( LAPACKE_lsame( jobz, 'v' ) ) {
00130             LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
00131         }
00132         /* Release memory and exit */
00133         if( LAPACKE_lsame( jobz, 'v' ) ) {
00134             LAPACKE_free( z_t );
00135         }
00136 exit_level_3:
00137         if( LAPACKE_lsame( jobz, 'v' ) ) {
00138             LAPACKE_free( q_t );
00139         }
00140 exit_level_2:
00141         LAPACKE_free( bb_t );
00142 exit_level_1:
00143         LAPACKE_free( ab_t );
00144 exit_level_0:
00145         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00146             LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
00147         }
00148     } else {
00149         info = -1;
00150         LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
00151     }
00152     return info;
00153 }


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