lapacke_zpbsvx_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.
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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"
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00028 ******************************************************************************
00029 * Contents: Native middle-level C interface to LAPACK function zpbsvx
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_zpbsvx_work( int matrix_order, char fact, char uplo,
00038                                 lapack_int n, lapack_int kd, lapack_int nrhs,
00039                                 lapack_complex_double* ab, lapack_int ldab,
00040                                 lapack_complex_double* afb, lapack_int ldafb,
00041                                 char* equed, double* s,
00042                                 lapack_complex_double* b, lapack_int ldb,
00043                                 lapack_complex_double* x, lapack_int ldx,
00044                                 double* rcond, double* ferr, double* berr,
00045                                 lapack_complex_double* work, double* rwork )
00046 {
00047     lapack_int info = 0;
00048     if( matrix_order == LAPACK_COL_MAJOR ) {
00049         /* Call LAPACK function and adjust info */
00050         LAPACK_zpbsvx( &fact, &uplo, &n, &kd, &nrhs, ab, &ldab, afb, &ldafb,
00051                        equed, s, b, &ldb, x, &ldx, rcond, ferr, berr, work,
00052                        rwork, &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,kd+1);
00058         lapack_int ldafb_t = MAX(1,kd+1);
00059         lapack_int ldb_t = MAX(1,n);
00060         lapack_int ldx_t = MAX(1,n);
00061         lapack_complex_double* ab_t = NULL;
00062         lapack_complex_double* afb_t = NULL;
00063         lapack_complex_double* b_t = NULL;
00064         lapack_complex_double* x_t = NULL;
00065         /* Check leading dimension(s) */
00066         if( ldab < n ) {
00067             info = -8;
00068             LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
00069             return info;
00070         }
00071         if( ldafb < n ) {
00072             info = -10;
00073             LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
00074             return info;
00075         }
00076         if( ldb < nrhs ) {
00077             info = -14;
00078             LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
00079             return info;
00080         }
00081         if( ldx < nrhs ) {
00082             info = -16;
00083             LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
00084             return info;
00085         }
00086         /* Allocate memory for temporary array(s) */
00087         ab_t = (lapack_complex_double*)
00088             LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
00089         if( ab_t == NULL ) {
00090             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00091             goto exit_level_0;
00092         }
00093         afb_t = (lapack_complex_double*)
00094             LAPACKE_malloc( sizeof(lapack_complex_double) *
00095                             ldafb_t * MAX(1,n) );
00096         if( afb_t == NULL ) {
00097             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00098             goto exit_level_1;
00099         }
00100         b_t = (lapack_complex_double*)
00101             LAPACKE_malloc( sizeof(lapack_complex_double) *
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_double*)
00108             LAPACKE_malloc( sizeof(lapack_complex_double) *
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_zpb_trans( matrix_order, uplo, n, kd, ab, ldab, ab_t, ldab_t );
00116         if( LAPACKE_lsame( fact, 'f' ) ) {
00117             LAPACKE_zpb_trans( matrix_order, uplo, n, kd, afb, ldafb, afb_t,
00118                                ldafb_t );
00119         }
00120         LAPACKE_zge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
00121         /* Call LAPACK function and adjust info */
00122         LAPACK_zpbsvx( &fact, &uplo, &n, &kd, &nrhs, ab_t, &ldab_t, afb_t,
00123                        &ldafb_t, equed, s, b_t, &ldb_t, x_t, &ldx_t, rcond,
00124                        ferr, berr, work, rwork, &info );
00125         if( info < 0 ) {
00126             info = info - 1;
00127         }
00128         /* Transpose output matrices */
00129         if( LAPACKE_lsame( fact, 'e' ) && LAPACKE_lsame( *equed, 'y' ) ) {
00130             LAPACKE_zpb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
00131                                ldab );
00132         }
00133         if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
00134             LAPACKE_zpb_trans( LAPACK_COL_MAJOR, uplo, n, kd, afb_t, ldafb_t,
00135                                afb, ldafb );
00136         }
00137         LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
00138         LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
00139         /* Release memory and exit */
00140         LAPACKE_free( x_t );
00141 exit_level_3:
00142         LAPACKE_free( b_t );
00143 exit_level_2:
00144         LAPACKE_free( afb_t );
00145 exit_level_1:
00146         LAPACKE_free( ab_t );
00147 exit_level_0:
00148         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00149             LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
00150         }
00151     } else {
00152         info = -1;
00153         LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
00154     }
00155     return info;
00156 }


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