LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_zgeevx_work()

lapack_int LAPACKE_zgeevx_work ( int  matrix_layout,
char  balanc,
char  jobvl,
char  jobvr,
char  sense,
lapack_int  n,
lapack_complex_double *  a,
lapack_int  lda,
lapack_complex_double *  w,
lapack_complex_double *  vl,
lapack_int  ldvl,
lapack_complex_double *  vr,
lapack_int  ldvr,
lapack_int *  ilo,
lapack_int *  ihi,
double *  scale,
double *  abnrm,
double *  rconde,
double *  rcondv,
lapack_complex_double *  work,
lapack_int  lwork,
double *  rwork 
)

Definition at line 35 of file lapacke_zgeevx_work.c.

45{
46 lapack_int info = 0;
47 if( matrix_layout == LAPACK_COL_MAJOR ) {
48 /* Call LAPACK function and adjust info */
49 LAPACK_zgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda, w, vl,
50 &ldvl, vr, &ldvr, ilo, ihi, scale, abnrm, rconde, rcondv,
51 work, &lwork, rwork, &info );
52 if( info < 0 ) {
53 info = info - 1;
54 }
55 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56 lapack_int lda_t = MAX(1,n);
57 lapack_int ldvl_t = MAX(1,n);
58 lapack_int ldvr_t = MAX(1,n);
59 lapack_complex_double* a_t = NULL;
60 lapack_complex_double* vl_t = NULL;
61 lapack_complex_double* vr_t = NULL;
62 /* Check leading dimension(s) */
63 if( lda < n ) {
64 info = -8;
65 LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
66 return info;
67 }
68 if( ldvl < 1 || ( LAPACKE_lsame( jobvl, 'v' ) && ldvl < n ) ) {
69 info = -11;
70 LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
71 return info;
72 }
73 if( ldvr < 1 || ( LAPACKE_lsame( jobvr, 'v' ) && ldvr < n ) ) {
74 info = -13;
75 LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
76 return info;
77 }
78 /* Query optimal working array(s) size if requested */
79 if( lwork == -1 ) {
80 LAPACK_zgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda_t, w,
81 vl, &ldvl_t, vr, &ldvr_t, ilo, ihi, scale, abnrm,
82 rconde, rcondv, work, &lwork, rwork, &info );
83 return (info < 0) ? (info - 1) : info;
84 }
85 /* Allocate memory for temporary array(s) */
86 a_t = (lapack_complex_double*)
87 LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
88 if( a_t == NULL ) {
89 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
90 goto exit_level_0;
91 }
92 if( LAPACKE_lsame( jobvl, 'v' ) ) {
93 vl_t = (lapack_complex_double*)
94 LAPACKE_malloc( sizeof(lapack_complex_double) *
95 ldvl_t * MAX(1,n) );
96 if( vl_t == NULL ) {
97 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
98 goto exit_level_1;
99 }
100 }
101 if( LAPACKE_lsame( jobvr, 'v' ) ) {
102 vr_t = (lapack_complex_double*)
103 LAPACKE_malloc( sizeof(lapack_complex_double) *
104 ldvr_t * MAX(1,n) );
105 if( vr_t == NULL ) {
106 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
107 goto exit_level_2;
108 }
109 }
110 /* Transpose input matrices */
111 LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
112 /* Call LAPACK function and adjust info */
113 LAPACK_zgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a_t, &lda_t, w,
114 vl_t, &ldvl_t, vr_t, &ldvr_t, ilo, ihi, scale, abnrm,
115 rconde, rcondv, work, &lwork, rwork, &info );
116 if( info < 0 ) {
117 info = info - 1;
118 }
119 /* Transpose output matrices */
120 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
121 if( LAPACKE_lsame( jobvl, 'v' ) ) {
122 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
123 }
124 if( LAPACKE_lsame( jobvr, 'v' ) ) {
125 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
126 }
127 /* Release memory and exit */
128 if( LAPACKE_lsame( jobvr, 'v' ) ) {
129 LAPACKE_free( vr_t );
130 }
131exit_level_2:
132 if( LAPACKE_lsame( jobvl, 'v' ) ) {
133 LAPACKE_free( vl_t );
134 }
135exit_level_1:
136 LAPACKE_free( a_t );
137exit_level_0:
138 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
139 LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
140 }
141 } else {
142 info = -1;
143 LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
144 }
145 return info;
146}
LAPACK_zgeevx
#define LAPACK_zgeevx(...)
Definition: lapack.h:1987
lapack_int
#define lapack_int
Definition: lapack.h:87
lapack_complex_double
#define lapack_complex_double
Definition: lapack.h:64
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
LAPACKE_zge_trans
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
Definition: lapacke_zge_trans.c:39
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
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