lapacke_dstevx_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
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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
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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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00028 ******************************************************************************
00029 * Contents: Native middle-level C interface to LAPACK function dstevx
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_dstevx_work( int matrix_order, char jobz, char range,
00038                                 lapack_int n, double* d, double* e, double vl,
00039                                 double vu, lapack_int il, lapack_int iu,
00040                                 double abstol, lapack_int* m, double* w,
00041                                 double* z, lapack_int ldz, double* work,
00042                                 lapack_int* iwork, lapack_int* ifail )
00043 {
00044     lapack_int info = 0;
00045     if( matrix_order == LAPACK_COL_MAJOR ) {
00046         /* Call LAPACK function and adjust info */
00047         LAPACK_dstevx( &jobz, &range, &n, d, e, &vl, &vu, &il, &iu, &abstol, m,
00048                        w, z, &ldz, work, iwork, ifail, &info );
00049         if( info < 0 ) {
00050             info = info - 1;
00051         }
00052     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00053         lapack_int ncols_z = ( LAPACKE_lsame( range, 'a' ) ||
00054                              LAPACKE_lsame( range, 'v' ) ) ? n :
00055                              ( LAPACKE_lsame( range, 'i' ) ? (iu-il+1) : 1);
00056         lapack_int ldz_t = MAX(1,n);
00057         double* z_t = NULL;
00058         /* Check leading dimension(s) */
00059         if( ldz < ncols_z ) {
00060             info = -15;
00061             LAPACKE_xerbla( "LAPACKE_dstevx_work", info );
00062             return info;
00063         }
00064         /* Allocate memory for temporary array(s) */
00065         if( LAPACKE_lsame( jobz, 'v' ) ) {
00066             z_t = (double*)
00067                 LAPACKE_malloc( sizeof(double) * ldz_t * MAX(1,ncols_z) );
00068             if( z_t == NULL ) {
00069                 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00070                 goto exit_level_0;
00071             }
00072         }
00073         /* Call LAPACK function and adjust info */
00074         LAPACK_dstevx( &jobz, &range, &n, d, e, &vl, &vu, &il, &iu, &abstol, m,
00075                        w, z_t, &ldz_t, work, iwork, ifail, &info );
00076         if( info < 0 ) {
00077             info = info - 1;
00078         }
00079         /* Transpose output matrices */
00080         if( LAPACKE_lsame( jobz, 'v' ) ) {
00081             LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, ncols_z, z_t, ldz_t, z,
00082                                ldz );
00083         }
00084         /* Release memory and exit */
00085         if( LAPACKE_lsame( jobz, 'v' ) ) {
00086             LAPACKE_free( z_t );
00087         }
00088 exit_level_0:
00089         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00090             LAPACKE_xerbla( "LAPACKE_dstevx_work", info );
00091         }
00092     } else {
00093         info = -1;
00094         LAPACKE_xerbla( "LAPACKE_dstevx_work", info );
00095     }
00096     return info;
00097 }


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autogenerated on Sat Jun 8 2019 18:55:53