LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_zhbgv_work()

lapack_int LAPACKE_zhbgv_work ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
lapack_int  ka,
lapack_int  kb,
lapack_complex_double *  ab,
lapack_int  ldab,
lapack_complex_double *  bb,
lapack_int  ldbb,
double *  w,
lapack_complex_double *  z,
lapack_int  ldz,
lapack_complex_double *  work,
double *  rwork 
)

Definition at line 35 of file lapacke_zhbgv_work.c.

42{
43 lapack_int info = 0;
44 if( matrix_layout == LAPACK_COL_MAJOR ) {
45 /* Call LAPACK function and adjust info */
46 LAPACK_zhbgv( &jobz, &uplo, &n, &ka, &kb, ab, &ldab, bb, &ldbb, w, z,
47 &ldz, work, rwork, &info );
48 if( info < 0 ) {
49 info = info - 1;
50 }
51 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52 lapack_int ldab_t = MAX(1,ka+1);
53 lapack_int ldbb_t = MAX(1,kb+1);
54 lapack_int ldz_t = MAX(1,n);
55 lapack_complex_double* ab_t = NULL;
56 lapack_complex_double* bb_t = NULL;
57 lapack_complex_double* z_t = NULL;
58 /* Check leading dimension(s) */
59 if( ldab < n ) {
60 info = -8;
61 LAPACKE_xerbla( "LAPACKE_zhbgv_work", info );
62 return info;
63 }
64 if( ldbb < n ) {
65 info = -10;
66 LAPACKE_xerbla( "LAPACKE_zhbgv_work", info );
67 return info;
68 }
69 if( ldz < n ) {
70 info = -13;
71 LAPACKE_xerbla( "LAPACKE_zhbgv_work", info );
72 return info;
73 }
74 /* Allocate memory for temporary array(s) */
75 ab_t = (lapack_complex_double*)
76 LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
77 if( ab_t == NULL ) {
78 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
79 goto exit_level_0;
80 }
81 bb_t = (lapack_complex_double*)
82 LAPACKE_malloc( sizeof(lapack_complex_double) * ldbb_t * MAX(1,n) );
83 if( bb_t == NULL ) {
84 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
85 goto exit_level_1;
86 }
87 if( LAPACKE_lsame( jobz, 'v' ) ) {
88 z_t = (lapack_complex_double*)
89 LAPACKE_malloc( sizeof(lapack_complex_double) *
90 ldz_t * MAX(1,n) );
91 if( z_t == NULL ) {
92 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
93 goto exit_level_2;
94 }
95 }
96 /* Transpose input matrices */
97 LAPACKE_zhb_trans( matrix_layout, uplo, n, ka, ab, ldab, ab_t, ldab_t );
98 LAPACKE_zhb_trans( matrix_layout, uplo, n, kb, bb, ldbb, bb_t, ldbb_t );
99 /* Call LAPACK function and adjust info */
100 LAPACK_zhbgv( &jobz, &uplo, &n, &ka, &kb, ab_t, &ldab_t, bb_t, &ldbb_t,
101 w, z_t, &ldz_t, work, rwork, &info );
102 if( info < 0 ) {
103 info = info - 1;
104 }
105 /* Transpose output matrices */
106 LAPACKE_zhb_trans( LAPACK_COL_MAJOR, uplo, n, ka, ab_t, ldab_t, ab,
107 ldab );
108 LAPACKE_zhb_trans( LAPACK_COL_MAJOR, uplo, n, kb, bb_t, ldbb_t, bb,
109 ldbb );
110 if( LAPACKE_lsame( jobz, 'v' ) ) {
111 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
112 }
113 /* Release memory and exit */
114 if( LAPACKE_lsame( jobz, 'v' ) ) {
115 LAPACKE_free( z_t );
116 }
117exit_level_2:
118 LAPACKE_free( bb_t );
119exit_level_1:
120 LAPACKE_free( ab_t );
121exit_level_0:
122 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
123 LAPACKE_xerbla( "LAPACKE_zhbgv_work", info );
124 }
125 } else {
126 info = -1;
127 LAPACKE_xerbla( "LAPACKE_zhbgv_work", info );
128 }
129 return info;
130}
LAPACK_zhbgv
#define LAPACK_zhbgv(...)
Definition: lapack.h:6477
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
LAPACKE_zhb_trans
void LAPACKE_zhb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
Definition: lapacke_zhb_trans.c:39
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