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2 Copyright (c) 2014, Intel Corp.
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function dtrevc
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33
34 #include "lapacke_utils.h"
35
LAPACKE_dtrevc_work(int matrix_layout,char side,char howmny,lapack_logical * select,lapack_int n,const double * t,lapack_int ldt,double * vl,lapack_int ldvl,double * vr,lapack_int ldvr,lapack_int mm,lapack_int * m,double * work)36 lapack_int LAPACKE_dtrevc_work( int matrix_layout, char side, char howmny,
37 lapack_logical* select, lapack_int n,
38 const double* t, lapack_int ldt, double* vl,
39 lapack_int ldvl, double* vr, lapack_int ldvr,
40 lapack_int mm, lapack_int* m, double* work )
41 {
42 lapack_int info = 0;
43 if( matrix_layout == LAPACK_COL_MAJOR ) {
44 /* Call LAPACK function and adjust info */
45 LAPACK_dtrevc( &side, &howmny, select, &n, t, &ldt, vl, &ldvl, vr,
46 &ldvr, &mm, m, work, &info );
47 if( info < 0 ) {
48 info = info - 1;
49 }
50 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51 lapack_int ldt_t = MAX(1,n);
52 lapack_int ldvl_t = MAX(1,n);
53 lapack_int ldvr_t = MAX(1,n);
54 double* t_t = NULL;
55 double* vl_t = NULL;
56 double* vr_t = NULL;
57 /* Check leading dimension(s) */
58 if( ldt < n ) {
59 info = -7;
60 LAPACKE_xerbla( "LAPACKE_dtrevc_work", info );
61 return info;
62 }
63 if( ldvl < mm ) {
64 info = -9;
65 LAPACKE_xerbla( "LAPACKE_dtrevc_work", info );
66 return info;
67 }
68 if( ldvr < mm ) {
69 info = -11;
70 LAPACKE_xerbla( "LAPACKE_dtrevc_work", info );
71 return info;
72 }
73 /* Allocate memory for temporary array(s) */
74 t_t = (double*)LAPACKE_malloc( sizeof(double) * ldt_t * MAX(1,n) );
75 if( t_t == NULL ) {
76 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
77 goto exit_level_0;
78 }
79 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
80 vl_t = (double*)
81 LAPACKE_malloc( sizeof(double) * ldvl_t * MAX(1,mm) );
82 if( vl_t == NULL ) {
83 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
84 goto exit_level_1;
85 }
86 }
87 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
88 vr_t = (double*)
89 LAPACKE_malloc( sizeof(double) * ldvr_t * MAX(1,mm) );
90 if( vr_t == NULL ) {
91 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
92 goto exit_level_2;
93 }
94 }
95 /* Transpose input matrices */
96 LAPACKE_dge_trans( matrix_layout, n, n, t, ldt, t_t, ldt_t );
97 if( ( LAPACKE_lsame( side, 'l' ) || LAPACKE_lsame( side, 'b' ) ) &&
98 LAPACKE_lsame( howmny, 'b' ) ) {
99 LAPACKE_dge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
100 }
101 if( ( LAPACKE_lsame( side, 'r' ) || LAPACKE_lsame( side, 'b' ) ) &&
102 LAPACKE_lsame( howmny, 'b' ) ) {
103 LAPACKE_dge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
104 }
105 /* Call LAPACK function and adjust info */
106 LAPACK_dtrevc( &side, &howmny, select, &n, t_t, &ldt_t, vl_t, &ldvl_t,
107 vr_t, &ldvr_t, &mm, m, work, &info );
108 if( info < 0 ) {
109 info = info - 1;
110 }
111 /* Transpose output matrices */
112 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
113 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vl_t, ldvl_t, vl,
114 ldvl );
115 }
116 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
117 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vr_t, ldvr_t, vr,
118 ldvr );
119 }
120 /* Release memory and exit */
121 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
122 LAPACKE_free( vr_t );
123 }
124 exit_level_2:
125 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
126 LAPACKE_free( vl_t );
127 }
128 exit_level_1:
129 LAPACKE_free( t_t );
130 exit_level_0:
131 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
132 LAPACKE_xerbla( "LAPACKE_dtrevc_work", info );
133 }
134 } else {
135 info = -1;
136 LAPACKE_xerbla( "LAPACKE_dtrevc_work", info );
137 }
138 return info;
139 }
140