LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
Loading...
Searching...
No Matches

◆ LAPACKE_ssbtrd_work()

lapack_int LAPACKE_ssbtrd_work ( int  matrix_layout,
char  vect,
char  uplo,
lapack_int  n,
lapack_int  kd,
float *  ab,
lapack_int  ldab,
float *  d,
float *  e,
float *  q,
lapack_int  ldq,
float *  work 
)

Definition at line 35 of file lapacke_ssbtrd_work.c.

39{
40 lapack_int info = 0;
41 if( matrix_layout == LAPACK_COL_MAJOR ) {
42 /* Call LAPACK function and adjust info */
43 LAPACK_ssbtrd( &vect, &uplo, &n, &kd, ab, &ldab, d, e, q, &ldq, work,
44 &info );
45 if( info < 0 ) {
46 info = info - 1;
47 }
48 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49 lapack_int ldab_t = MAX(1,kd+1);
50 lapack_int ldq_t = MAX(1,n);
51 float* ab_t = NULL;
52 float* q_t = NULL;
53 /* Check leading dimension(s) */
54 if( ldab < n ) {
55 info = -7;
56 LAPACKE_xerbla( "LAPACKE_ssbtrd_work", info );
57 return info;
58 }
59 if( ldq < n ) {
60 info = -11;
61 LAPACKE_xerbla( "LAPACKE_ssbtrd_work", info );
62 return info;
63 }
64 /* Allocate memory for temporary array(s) */
65 ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
66 if( ab_t == NULL ) {
67 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
68 goto exit_level_0;
69 }
70 if( LAPACKE_lsame( vect, 'u' ) || LAPACKE_lsame( vect, 'v' ) ) {
71 q_t = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
72 if( q_t == NULL ) {
73 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
74 goto exit_level_1;
75 }
76 }
77 /* Transpose input matrices */
78 LAPACKE_ssb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
79 if( LAPACKE_lsame( vect, 'u' ) || LAPACKE_lsame( vect, 'v' ) ) {
80 LAPACKE_sge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
81 }
82 /* Call LAPACK function and adjust info */
83 LAPACK_ssbtrd( &vect, &uplo, &n, &kd, ab_t, &ldab_t, d, e, q_t, &ldq_t,
84 work, &info );
85 if( info < 0 ) {
86 info = info - 1;
87 }
88 /* Transpose output matrices */
89 LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
90 ldab );
91 if( LAPACKE_lsame( vect, 'u' ) || LAPACKE_lsame( vect, 'v' ) ) {
92 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
93 }
94 /* Release memory and exit */
95 if( LAPACKE_lsame( vect, 'u' ) || LAPACKE_lsame( vect, 'v' ) ) {
96 LAPACKE_free( q_t );
97 }
98exit_level_1:
99 LAPACKE_free( ab_t );
100exit_level_0:
101 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
102 LAPACKE_xerbla( "LAPACKE_ssbtrd_work", info );
103 }
104 } else {
105 info = -1;
106 LAPACKE_xerbla( "LAPACKE_ssbtrd_work", info );
107 }
108 return info;
109}
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_ssbtrd
#define LAPACK_ssbtrd(...)
Definition: lapack.h:15190
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_ssb_trans
void LAPACKE_ssb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const float *in, lapack_int ldin, float *out, lapack_int ldout)
Definition: lapacke_ssb_trans.c:39
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_sge_trans
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
Definition: lapacke_sge_trans.c:39
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
Here is the call graph for this function:
Here is the caller graph for this function: