lapacke_sspevd_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 sspevd
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_sspevd_work( int matrix_order, char jobz, char uplo,
00038                                 lapack_int n, float* ap, float* w, float* z,
00039                                 lapack_int ldz, float* work, lapack_int lwork,
00040                                 lapack_int* iwork, lapack_int liwork )
00041 {
00042     lapack_int info = 0;
00043     if( matrix_order == LAPACK_COL_MAJOR ) {
00044         /* Call LAPACK function and adjust info */
00045         LAPACK_sspevd( &jobz, &uplo, &n, ap, w, z, &ldz, work, &lwork, iwork,
00046                        &liwork, &info );
00047         if( info < 0 ) {
00048             info = info - 1;
00049         }
00050     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00051         lapack_int ldz_t = MAX(1,n);
00052         float* z_t = NULL;
00053         float* ap_t = NULL;
00054         /* Check leading dimension(s) */
00055         if( ldz < n ) {
00056             info = -8;
00057             LAPACKE_xerbla( "LAPACKE_sspevd_work", info );
00058             return info;
00059         }
00060         /* Query optimal working array(s) size if requested */
00061         if( liwork == -1 || lwork == -1 ) {
00062             LAPACK_sspevd( &jobz, &uplo, &n, ap, w, z, &ldz_t, work, &lwork,
00063                            iwork, &liwork, &info );
00064             return (info < 0) ? (info - 1) : info;
00065         }
00066         /* Allocate memory for temporary array(s) */
00067         if( LAPACKE_lsame( jobz, 'v' ) ) {
00068             z_t = (float*)LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,n) );
00069             if( z_t == NULL ) {
00070                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00071                 goto exit_level_0;
00072             }
00073         }
00074         ap_t = (float*)
00075             LAPACKE_malloc( sizeof(float) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
00076         if( ap_t == NULL ) {
00077             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00078             goto exit_level_1;
00079         }
00080         /* Transpose input matrices */
00081         LAPACKE_ssp_trans( matrix_order, uplo, n, ap, ap_t );
00082         /* Call LAPACK function and adjust info */
00083         LAPACK_sspevd( &jobz, &uplo, &n, ap_t, w, z_t, &ldz_t, work, &lwork,
00084                        iwork, &liwork, &info );
00085         if( info < 0 ) {
00086             info = info - 1;
00087         }
00088         /* Transpose output matrices */
00089         if( LAPACKE_lsame( jobz, 'v' ) ) {
00090             LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
00091         }
00092         LAPACKE_ssp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
00093         /* Release memory and exit */
00094         LAPACKE_free( ap_t );
00095 exit_level_1:
00096         if( LAPACKE_lsame( jobz, 'v' ) ) {
00097             LAPACKE_free( z_t );
00098         }
00099 exit_level_0:
00100         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00101             LAPACKE_xerbla( "LAPACKE_sspevd_work", info );
00102         }
00103     } else {
00104         info = -1;
00105         LAPACKE_xerbla( "LAPACKE_sspevd_work", info );
00106     }
00107     return info;
00108 }


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