LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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lapacke_dgeevx_work.c
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1/*****************************************************************************
2 Copyright (c) 2014, Intel Corp.
3 All rights reserved.
4
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10 * Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
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16
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18 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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28*****************************************************************************
29* Contents: Native middle-level C interface to LAPACK function dgeevx
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_int LAPACKE_dgeevx_work( int matrix_layout, char balanc, char jobvl,
36 char jobvr, char sense, lapack_int n, double* a,
37 lapack_int lda, double* wr, double* wi,
38 double* vl, lapack_int ldvl, double* vr,
39 lapack_int ldvr, lapack_int* ilo,
40 lapack_int* ihi, double* scale, double* abnrm,
41 double* rconde, double* rcondv, double* work,
42 lapack_int lwork, lapack_int* iwork )
43{
44 lapack_int info = 0;
45 if( matrix_layout == LAPACK_COL_MAJOR ) {
46 /* Call LAPACK function and adjust info */
47 LAPACK_dgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda, wr, wi, vl,
48 &ldvl, vr, &ldvr, ilo, ihi, scale, abnrm, rconde, rcondv,
49 work, &lwork, iwork, &info );
50 if( info < 0 ) {
51 info = info - 1;
52 }
53 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54 lapack_int lda_t = MAX(1,n);
55 lapack_int ldvl_t = MAX(1,n);
56 lapack_int ldvr_t = MAX(1,n);
57 double* a_t = NULL;
58 double* vl_t = NULL;
59 double* vr_t = NULL;
60 /* Check leading dimension(s) */
61 if( lda < n ) {
62 info = -8;
63 LAPACKE_xerbla( "LAPACKE_dgeevx_work", info );
64 return info;
65 }
66 if( ldvl < 1 || ( LAPACKE_lsame( jobvl, 'v' ) && ldvl < n ) ) {
67 info = -12;
68 LAPACKE_xerbla( "LAPACKE_dgeevx_work", info );
69 return info;
70 }
71 if( ldvr < 1 || ( LAPACKE_lsame( jobvr, 'v' ) && ldvr < n ) ) {
72 info = -14;
73 LAPACKE_xerbla( "LAPACKE_dgeevx_work", info );
74 return info;
75 }
76 /* Query optimal working array(s) size if requested */
77 if( lwork == -1 ) {
78 LAPACK_dgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda_t, wr,
79 wi, vl, &ldvl_t, vr, &ldvr_t, ilo, ihi, scale, abnrm,
80 rconde, rcondv, work, &lwork, iwork, &info );
81 return (info < 0) ? (info - 1) : info;
82 }
83 /* Allocate memory for temporary array(s) */
84 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
85 if( a_t == NULL ) {
87 goto exit_level_0;
88 }
89 if( LAPACKE_lsame( jobvl, 'v' ) ) {
90 vl_t = (double*)
91 LAPACKE_malloc( sizeof(double) * ldvl_t * MAX(1,n) );
92 if( vl_t == NULL ) {
94 goto exit_level_1;
95 }
96 }
97 if( LAPACKE_lsame( jobvr, 'v' ) ) {
98 vr_t = (double*)
99 LAPACKE_malloc( sizeof(double) * ldvr_t * MAX(1,n) );
100 if( vr_t == NULL ) {
102 goto exit_level_2;
103 }
104 }
105 /* Transpose input matrices */
106 LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
107 /* Call LAPACK function and adjust info */
108 LAPACK_dgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a_t, &lda_t, wr, wi,
109 vl_t, &ldvl_t, vr_t, &ldvr_t, ilo, ihi, scale, abnrm,
110 rconde, rcondv, work, &lwork, iwork, &info );
111 if( info < 0 ) {
112 info = info - 1;
113 }
114 /* Transpose output matrices */
115 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
116 if( LAPACKE_lsame( jobvl, 'v' ) ) {
117 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
118 }
119 if( LAPACKE_lsame( jobvr, 'v' ) ) {
120 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
121 }
122 /* Release memory and exit */
123 if( LAPACKE_lsame( jobvr, 'v' ) ) {
124 LAPACKE_free( vr_t );
125 }
126exit_level_2:
127 if( LAPACKE_lsame( jobvl, 'v' ) ) {
128 LAPACKE_free( vl_t );
129 }
130exit_level_1:
131 LAPACKE_free( a_t );
132exit_level_0:
133 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
134 LAPACKE_xerbla( "LAPACKE_dgeevx_work", info );
135 }
136 } else {
137 info = -1;
138 LAPACKE_xerbla( "LAPACKE_dgeevx_work", info );
139 }
140 return info;
141}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_dgeevx(...)
Definition: lapack.h:1936
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
lapack_int LAPACKE_dgeevx_work(int matrix_layout, char balanc, char jobvl, char jobvr, char sense, lapack_int n, double *a, lapack_int lda, double *wr, double *wi, double *vl, lapack_int ldvl, double *vr, lapack_int ldvr, lapack_int *ilo, lapack_int *ihi, double *scale, double *abnrm, double *rconde, double *rcondv, double *work, lapack_int lwork, lapack_int *iwork)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)