lapacke_dtgsen_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 
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00009       this list of conditions and the following disclaimer.
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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 dtgsen
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_dtgsen_work( int matrix_order, lapack_int ijob,
00038                                 lapack_logical wantq, lapack_logical wantz,
00039                                 const lapack_logical* select, lapack_int n,
00040                                 double* a, lapack_int lda, double* b,
00041                                 lapack_int ldb, double* alphar, double* alphai,
00042                                 double* beta, double* q, lapack_int ldq,
00043                                 double* z, lapack_int ldz, lapack_int* m,
00044                                 double* pl, double* pr, double* dif,
00045                                 double* work, lapack_int lwork,
00046                                 lapack_int* iwork, lapack_int liwork )
00047 {
00048     lapack_int info = 0;
00049     if( matrix_order == LAPACK_COL_MAJOR ) {
00050         /* Call LAPACK function and adjust info */
00051         LAPACK_dtgsen( &ijob, &wantq, &wantz, select, &n, a, &lda, b, &ldb,
00052                        alphar, alphai, beta, q, &ldq, z, &ldz, m, pl, pr, dif,
00053                        work, &lwork, iwork, &liwork, &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 ldb_t = MAX(1,n);
00060         lapack_int ldq_t = MAX(1,n);
00061         lapack_int ldz_t = MAX(1,n);
00062         double* a_t = NULL;
00063         double* b_t = NULL;
00064         double* q_t = NULL;
00065         double* z_t = NULL;
00066         /* Check leading dimension(s) */
00067         if( lda < n ) {
00068             info = -8;
00069             LAPACKE_xerbla( "LAPACKE_dtgsen_work", info );
00070             return info;
00071         }
00072         if( ldb < n ) {
00073             info = -10;
00074             LAPACKE_xerbla( "LAPACKE_dtgsen_work", info );
00075             return info;
00076         }
00077         if( ldq < n ) {
00078             info = -15;
00079             LAPACKE_xerbla( "LAPACKE_dtgsen_work", info );
00080             return info;
00081         }
00082         if( ldz < n ) {
00083             info = -17;
00084             LAPACKE_xerbla( "LAPACKE_dtgsen_work", info );
00085             return info;
00086         }
00087         /* Query optimal working array(s) size if requested */
00088         if( liwork == -1 || lwork == -1 ) {
00089             LAPACK_dtgsen( &ijob, &wantq, &wantz, select, &n, a, &lda_t, b,
00090                            &ldb_t, alphar, alphai, beta, q, &ldq_t, z, &ldz_t,
00091                            m, pl, pr, dif, work, &lwork, iwork, &liwork,
00092                            &info );
00093             return (info < 0) ? (info - 1) : info;
00094         }
00095         /* Allocate memory for temporary array(s) */
00096         a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
00097         if( a_t == NULL ) {
00098             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00099             goto exit_level_0;
00100         }
00101         b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
00102         if( b_t == NULL ) {
00103             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00104             goto exit_level_1;
00105         }
00106         if( wantq ) {
00107             q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,n) );
00108             if( q_t == NULL ) {
00109                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00110                 goto exit_level_2;
00111             }
00112         }
00113         if( wantz ) {
00114             z_t = (double*)LAPACKE_malloc( sizeof(double) * ldz_t * MAX(1,n) );
00115             if( z_t == NULL ) {
00116                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00117                 goto exit_level_3;
00118             }
00119         }
00120         /* Transpose input matrices */
00121         LAPACKE_dge_trans( matrix_order, n, n, a, lda, a_t, lda_t );
00122         LAPACKE_dge_trans( matrix_order, n, n, b, ldb, b_t, ldb_t );
00123         if( wantq ) {
00124             LAPACKE_dge_trans( matrix_order, n, n, q, ldq, q_t, ldq_t );
00125         }
00126         if( wantz ) {
00127             LAPACKE_dge_trans( matrix_order, n, n, z, ldz, z_t, ldz_t );
00128         }
00129         /* Call LAPACK function and adjust info */
00130         LAPACK_dtgsen( &ijob, &wantq, &wantz, select, &n, a_t, &lda_t, b_t,
00131                        &ldb_t, alphar, alphai, beta, q_t, &ldq_t, z_t, &ldz_t,
00132                        m, pl, pr, dif, work, &lwork, iwork, &liwork, &info );
00133         if( info < 0 ) {
00134             info = info - 1;
00135         }
00136         /* Transpose output matrices */
00137         LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
00138         LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
00139         if( wantq ) {
00140             LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
00141         }
00142         if( wantz ) {
00143             LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
00144         }
00145         /* Release memory and exit */
00146         if( wantz ) {
00147             LAPACKE_free( z_t );
00148         }
00149 exit_level_3:
00150         if( wantq ) {
00151             LAPACKE_free( q_t );
00152         }
00153 exit_level_2:
00154         LAPACKE_free( b_t );
00155 exit_level_1:
00156         LAPACKE_free( a_t );
00157 exit_level_0:
00158         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00159             LAPACKE_xerbla( "LAPACKE_dtgsen_work", info );
00160         }
00161     } else {
00162         info = -1;
00163         LAPACKE_xerbla( "LAPACKE_dtgsen_work", info );
00164     }
00165     return info;
00166 }


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autogenerated on Sat Jun 8 2019 18:55:53