lapacke_cgesvx_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
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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 cgesvx
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_cgesvx_work( int matrix_order, char fact, char trans,
00038                                 lapack_int n, lapack_int nrhs,
00039                                 lapack_complex_float* a, lapack_int lda,
00040                                 lapack_complex_float* af, lapack_int ldaf,
00041                                 lapack_int* ipiv, char* equed, float* r,
00042                                 float* c, lapack_complex_float* b,
00043                                 lapack_int ldb, lapack_complex_float* x,
00044                                 lapack_int ldx, float* rcond, float* ferr,
00045                                 float* berr, lapack_complex_float* work,
00046                                 float* rwork )
00047 {
00048     lapack_int info = 0;
00049     if( matrix_order == LAPACK_COL_MAJOR ) {
00050         /* Call LAPACK function and adjust info */
00051         LAPACK_cgesvx( &fact, &trans, &n, &nrhs, a, &lda, af, &ldaf, ipiv,
00052                        equed, r, c, b, &ldb, x, &ldx, rcond, ferr, berr, work,
00053                        rwork, &info );
00054         if( info < 0 ) {
00055             info = info - 1;
00056         }
00057     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00058         lapack_int lda_t = MAX(1,n);
00059         lapack_int ldaf_t = MAX(1,n);
00060         lapack_int ldb_t = MAX(1,n);
00061         lapack_int ldx_t = MAX(1,n);
00062         lapack_complex_float* a_t = NULL;
00063         lapack_complex_float* af_t = NULL;
00064         lapack_complex_float* b_t = NULL;
00065         lapack_complex_float* x_t = NULL;
00066         /* Check leading dimension(s) */
00067         if( lda < n ) {
00068             info = -7;
00069             LAPACKE_xerbla( "LAPACKE_cgesvx_work", info );
00070             return info;
00071         }
00072         if( ldaf < n ) {
00073             info = -9;
00074             LAPACKE_xerbla( "LAPACKE_cgesvx_work", info );
00075             return info;
00076         }
00077         if( ldb < nrhs ) {
00078             info = -15;
00079             LAPACKE_xerbla( "LAPACKE_cgesvx_work", info );
00080             return info;
00081         }
00082         if( ldx < nrhs ) {
00083             info = -17;
00084             LAPACKE_xerbla( "LAPACKE_cgesvx_work", info );
00085             return info;
00086         }
00087         /* Allocate memory for temporary array(s) */
00088         a_t = (lapack_complex_float*)
00089             LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
00090         if( a_t == NULL ) {
00091             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00092             goto exit_level_0;
00093         }
00094         af_t = (lapack_complex_float*)
00095             LAPACKE_malloc( sizeof(lapack_complex_float) * ldaf_t * MAX(1,n) );
00096         if( af_t == NULL ) {
00097             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00098             goto exit_level_1;
00099         }
00100         b_t = (lapack_complex_float*)
00101             LAPACKE_malloc( sizeof(lapack_complex_float) *
00102                             ldb_t * MAX(1,nrhs) );
00103         if( b_t == NULL ) {
00104             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00105             goto exit_level_2;
00106         }
00107         x_t = (lapack_complex_float*)
00108             LAPACKE_malloc( sizeof(lapack_complex_float) *
00109                             ldx_t * MAX(1,nrhs) );
00110         if( x_t == NULL ) {
00111             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00112             goto exit_level_3;
00113         }
00114         /* Transpose input matrices */
00115         LAPACKE_cge_trans( matrix_order, n, n, a, lda, a_t, lda_t );
00116         if( LAPACKE_lsame( fact, 'f' ) ) {
00117             LAPACKE_cge_trans( matrix_order, n, n, af, ldaf, af_t, ldaf_t );
00118         }
00119         LAPACKE_cge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
00120         /* Call LAPACK function and adjust info */
00121         LAPACK_cgesvx( &fact, &trans, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
00122                        ipiv, equed, r, c, b_t, &ldb_t, x_t, &ldx_t, rcond, ferr,
00123                        berr, work, rwork, &info );
00124         if( info < 0 ) {
00125             info = info - 1;
00126         }
00127         /* Transpose output matrices */
00128         if( LAPACKE_lsame( fact, 'e' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
00129             LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
00130             LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
00131         }
00132         if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
00133             LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, af_t, ldaf_t, af, ldaf );
00134         }
00135         if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
00136             LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
00137             LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
00138         }
00139         LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
00140         /* Release memory and exit */
00141         LAPACKE_free( x_t );
00142 exit_level_3:
00143         LAPACKE_free( b_t );
00144 exit_level_2:
00145         LAPACKE_free( af_t );
00146 exit_level_1:
00147         LAPACKE_free( a_t );
00148 exit_level_0:
00149         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00150             LAPACKE_xerbla( "LAPACKE_cgesvx_work", info );
00151         }
00152     } else {
00153         info = -1;
00154         LAPACKE_xerbla( "LAPACKE_cgesvx_work", info );
00155     }
00156     return info;
00157 }


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