LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dtgevc_work()

lapack_int LAPACKE_dtgevc_work ( int  matrix_layout,
char  side,
char  howmny,
const lapack_logical *  select,
lapack_int  n,
const double *  s,
lapack_int  lds,
const double *  p,
lapack_int  ldp,
double *  vl,
lapack_int  ldvl,
double *  vr,
lapack_int  ldvr,
lapack_int  mm,
lapack_int *  m,
double *  work 
)

Definition at line 35 of file lapacke_dtgevc_work.c.

41{
42 lapack_int info = 0;
43 if( matrix_layout == LAPACK_COL_MAJOR ) {
44 /* Call LAPACK function and adjust info */
45 LAPACK_dtgevc( &side, &howmny, select, &n, s, &lds, p, &ldp, vl, &ldvl,
46 vr, &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 ldp_t = MAX(1,n);
52 lapack_int lds_t = MAX(1,n);
53 lapack_int ldvl_t = MAX(1,n);
54 lapack_int ldvr_t = MAX(1,n);
55 double* s_t = NULL;
56 double* p_t = NULL;
57 double* vl_t = NULL;
58 double* vr_t = NULL;
59 /* Check leading dimension(s) */
60 if( ldp < n ) {
61 info = -9;
62 LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
63 return info;
64 }
65 if( lds < n ) {
66 info = -7;
67 LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
68 return info;
69 }
70 if( ldvl < mm ) {
71 info = -11;
72 LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
73 return info;
74 }
75 if( ldvr < mm ) {
76 info = -13;
77 LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
78 return info;
79 }
80 /* Allocate memory for temporary array(s) */
81 s_t = (double*)LAPACKE_malloc( sizeof(double) * lds_t * MAX(1,n) );
82 if( s_t == NULL ) {
83 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
84 goto exit_level_0;
85 }
86 p_t = (double*)LAPACKE_malloc( sizeof(double) * ldp_t * MAX(1,n) );
87 if( p_t == NULL ) {
88 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
89 goto exit_level_1;
90 }
91 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
92 vl_t = (double*)
93 LAPACKE_malloc( sizeof(double) * ldvl_t * MAX(1,mm) );
94 if( vl_t == NULL ) {
95 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
96 goto exit_level_2;
97 }
98 }
99 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
100 vr_t = (double*)
101 LAPACKE_malloc( sizeof(double) * ldvr_t * MAX(1,mm) );
102 if( vr_t == NULL ) {
103 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
104 goto exit_level_3;
105 }
106 }
107 /* Transpose input matrices */
108 LAPACKE_dge_trans( matrix_layout, n, n, s, lds, s_t, lds_t );
109 LAPACKE_dge_trans( matrix_layout, n, n, p, ldp, p_t, ldp_t );
110 if( ( LAPACKE_lsame( side, 'l' ) || LAPACKE_lsame( side, 'b' ) ) &&
111 LAPACKE_lsame( howmny, 'b' ) ) {
112 LAPACKE_dge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
113 }
114 if( ( LAPACKE_lsame( side, 'r' ) || LAPACKE_lsame( side, 'b' ) ) &&
115 LAPACKE_lsame( howmny, 'b' ) ) {
116 LAPACKE_dge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
117 }
118 /* Call LAPACK function and adjust info */
119 LAPACK_dtgevc( &side, &howmny, select, &n, s_t, &lds_t, p_t, &ldp_t,
120 vl_t, &ldvl_t, vr_t, &ldvr_t, &mm, m, work, &info );
121 if( info < 0 ) {
122 info = info - 1;
123 }
124 /* Transpose output matrices */
125 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
126 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vl_t, ldvl_t, vl,
127 ldvl );
128 }
129 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
130 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vr_t, ldvr_t, vr,
131 ldvr );
132 }
133 /* Release memory and exit */
134 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
135 LAPACKE_free( vr_t );
136 }
137exit_level_3:
138 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
139 LAPACKE_free( vl_t );
140 }
141exit_level_2:
142 LAPACKE_free( p_t );
143exit_level_1:
144 LAPACKE_free( s_t );
145exit_level_0:
146 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
147 LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
148 }
149 } else {
150 info = -1;
151 LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
152 }
153 return info;
154}
LAPACK_dtgevc
#define LAPACK_dtgevc(...)
Definition: lapack.h:20095
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
LAPACKE_dge_trans
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
Definition: lapacke_dge_trans.c:39
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