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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function dggevx
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33
34 #include "lapacke_utils.h"
35
LAPACKE_dggevx_work(int matrix_layout,char balanc,char jobvl,char jobvr,char sense,lapack_int n,double * a,lapack_int lda,double * b,lapack_int ldb,double * alphar,double * alphai,double * beta,double * vl,lapack_int ldvl,double * vr,lapack_int ldvr,lapack_int * ilo,lapack_int * ihi,double * lscale,double * rscale,double * abnrm,double * bbnrm,double * rconde,double * rcondv,double * work,lapack_int lwork,lapack_int * iwork,lapack_logical * bwork)36 lapack_int LAPACKE_dggevx_work( int matrix_layout, char balanc, char jobvl,
37 char jobvr, char sense, lapack_int n, double* a,
38 lapack_int lda, double* b, lapack_int ldb,
39 double* alphar, double* alphai, double* beta,
40 double* vl, lapack_int ldvl, double* vr,
41 lapack_int ldvr, lapack_int* ilo,
42 lapack_int* ihi, double* lscale, double* rscale,
43 double* abnrm, double* bbnrm, double* rconde,
44 double* rcondv, double* work, lapack_int lwork,
45 lapack_int* iwork, lapack_logical* bwork )
46 {
47 lapack_int info = 0;
48 if( matrix_layout == LAPACK_COL_MAJOR ) {
49 /* Call LAPACK function and adjust info */
50 LAPACK_dggevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda, b, &ldb,
51 alphar, alphai, beta, vl, &ldvl, vr, &ldvr, ilo, ihi,
52 lscale, rscale, abnrm, bbnrm, rconde, rcondv, work,
53 &lwork, iwork, bwork, &info );
54 if( info < 0 ) {
55 info = info - 1;
56 }
57 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
58 lapack_int lda_t = MAX(1,n);
59 lapack_int ldb_t = MAX(1,n);
60 lapack_int ldvl_t = MAX(1,n);
61 lapack_int ldvr_t = MAX(1,n);
62 double* a_t = NULL;
63 double* b_t = NULL;
64 double* vl_t = NULL;
65 double* vr_t = NULL;
66 /* Check leading dimension(s) */
67 if( lda < n ) {
68 info = -8;
69 LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
70 return info;
71 }
72 if( ldb < n ) {
73 info = -10;
74 LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
75 return info;
76 }
77 if( ldvl < n ) {
78 info = -15;
79 LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
80 return info;
81 }
82 if( ldvr < n ) {
83 info = -17;
84 LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
85 return info;
86 }
87 /* Query optimal working array(s) size if requested */
88 if( lwork == -1 ) {
89 LAPACK_dggevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda_t, b,
90 &ldb_t, alphar, alphai, beta, vl, &ldvl_t, vr,
91 &ldvr_t, ilo, ihi, lscale, rscale, abnrm, bbnrm,
92 rconde, rcondv, work, &lwork, iwork, bwork, &info );
93 return (info < 0) ? (info - 1) : info;
94 }
95 /* Allocate memory for temporary array(s) */
96 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
97 if( a_t == NULL ) {
98 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
99 goto exit_level_0;
100 }
101 b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
102 if( b_t == NULL ) {
103 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
104 goto exit_level_1;
105 }
106 if( LAPACKE_lsame( jobvl, 'v' ) ) {
107 vl_t = (double*)
108 LAPACKE_malloc( sizeof(double) * ldvl_t * MAX(1,n) );
109 if( vl_t == NULL ) {
110 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
111 goto exit_level_2;
112 }
113 }
114 if( LAPACKE_lsame( jobvr, 'v' ) ) {
115 vr_t = (double*)
116 LAPACKE_malloc( sizeof(double) * ldvr_t * MAX(1,n) );
117 if( vr_t == NULL ) {
118 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
119 goto exit_level_3;
120 }
121 }
122 /* Transpose input matrices */
123 LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
124 LAPACKE_dge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
125 /* Call LAPACK function and adjust info */
126 LAPACK_dggevx( &balanc, &jobvl, &jobvr, &sense, &n, a_t, &lda_t, b_t,
127 &ldb_t, alphar, alphai, beta, vl_t, &ldvl_t, vr_t,
128 &ldvr_t, ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
129 rcondv, work, &lwork, iwork, bwork, &info );
130 if( info < 0 ) {
131 info = info - 1;
132 }
133 /* Transpose output matrices */
134 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
135 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
136 if( LAPACKE_lsame( jobvl, 'v' ) ) {
137 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
138 }
139 if( LAPACKE_lsame( jobvr, 'v' ) ) {
140 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
141 }
142 /* Release memory and exit */
143 if( LAPACKE_lsame( jobvr, 'v' ) ) {
144 LAPACKE_free( vr_t );
145 }
146 exit_level_3:
147 if( LAPACKE_lsame( jobvl, 'v' ) ) {
148 LAPACKE_free( vl_t );
149 }
150 exit_level_2:
151 LAPACKE_free( b_t );
152 exit_level_1:
153 LAPACKE_free( a_t );
154 exit_level_0:
155 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
156 LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
157 }
158 } else {
159 info = -1;
160 LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
161 }
162 return info;
163 }
164