lapacke_dgesvj.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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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 high-level C interface to LAPACK function dgesvj
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_dgesvj( int matrix_order, char joba, char jobu, char jobv,
00038                            lapack_int m, lapack_int n, double* a,
00039                            lapack_int lda, double* sva, lapack_int mv,
00040                            double* v, lapack_int ldv, double* stat )
00041 {
00042     lapack_int info = 0;
00043     lapack_int lwork = MAX(6,m+n);
00044     double* work = NULL;
00045     lapack_int i;
00046     if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
00047         LAPACKE_xerbla( "LAPACKE_dgesvj", -1 );
00048         return -1;
00049     }
00050 #ifndef LAPACK_DISABLE_NAN_CHECK
00051     /* Optionally check input matrices for NaNs */
00052     lapack_int nrows_v = LAPACKE_lsame( jobv, 'v' ) ? n :
00053                          ( LAPACKE_lsame( jobv, 'a' ) ? mv : 1);
00054     if( LAPACKE_dge_nancheck( matrix_order, m, n, a, lda ) ) {
00055         return -7;
00056     }
00057     if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
00058         if( LAPACKE_dge_nancheck( matrix_order, nrows_v, n, v, ldv ) ) {
00059             return -11;
00060         }
00061     }
00062 #endif
00063     /* Allocate memory for working array(s) */
00064     work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
00065     if( work == NULL ) {
00066         info = LAPACK_WORK_MEMORY_ERROR;
00067         goto exit_level_0;
00068     }
00069     work[0] = stat[0];  /* Significant if jobu = 'c' */
00070     /* Call middle-level interface */
00071     info = LAPACKE_dgesvj_work( matrix_order, joba, jobu, jobv, m, n, a, lda,
00072                                 sva, mv, v, ldv, work, lwork );
00073     /* Backup significant data from working array(s) */
00074     for( i=0; i<6; i++ ) {
00075         stat[i] = work[i];
00076     }
00077     /* Release memory and exit */
00078     LAPACKE_free( work );
00079 exit_level_0:
00080     if( info == LAPACK_WORK_MEMORY_ERROR ) {
00081         LAPACKE_xerbla( "LAPACKE_dgesvj", info );
00082     }
00083     return info;
00084 }


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