LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ssbgvd_work()

lapack_int LAPACKE_ssbgvd_work ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
lapack_int  ka,
lapack_int  kb,
float *  ab,
lapack_int  ldab,
float *  bb,
lapack_int  ldbb,
float *  w,
float *  z,
lapack_int  ldz,
float *  work,
lapack_int  lwork,
lapack_int iwork,
lapack_int  liwork 
)

Definition at line 35 of file lapacke_ssbgvd_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_ssbgvd( &jobz, &uplo, &n, &ka, &kb, ab, &ldab, bb, &ldbb, w, z,
46  &ldz, work, &lwork, iwork, &liwork, &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int ldab_t = MAX(1,ka+1);
52  lapack_int ldbb_t = MAX(1,kb+1);
53  lapack_int ldz_t = MAX(1,n);
54  float* ab_t = NULL;
55  float* bb_t = NULL;
56  float* z_t = NULL;
57  /* Check leading dimension(s) */
58  if( ldab < n ) {
59  info = -8;
60  LAPACKE_xerbla( "LAPACKE_ssbgvd_work", info );
61  return info;
62  }
63  if( ldbb < n ) {
64  info = -10;
65  LAPACKE_xerbla( "LAPACKE_ssbgvd_work", info );
66  return info;
67  }
68  if( ldz < n ) {
69  info = -13;
70  LAPACKE_xerbla( "LAPACKE_ssbgvd_work", info );
71  return info;
72  }
73  /* Query optimal working array(s) size if requested */
74  if( liwork == -1 || lwork == -1 ) {
75  LAPACK_ssbgvd( &jobz, &uplo, &n, &ka, &kb, ab, &ldab_t, bb, &ldbb_t,
76  w, z, &ldz_t, work, &lwork, iwork, &liwork, &info );
77  return (info < 0) ? (info - 1) : info;
78  }
79  /* Allocate memory for temporary array(s) */
80  ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
81  if( ab_t == NULL ) {
83  goto exit_level_0;
84  }
85  bb_t = (float*)LAPACKE_malloc( sizeof(float) * ldbb_t * MAX(1,n) );
86  if( bb_t == NULL ) {
88  goto exit_level_1;
89  }
90  if( LAPACKE_lsame( jobz, 'v' ) ) {
91  z_t = (float*)LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,n) );
92  if( z_t == NULL ) {
94  goto exit_level_2;
95  }
96  }
97  /* Transpose input matrices */
98  LAPACKE_ssb_trans( matrix_layout, uplo, n, ka, ab, ldab, ab_t, ldab_t );
99  LAPACKE_ssb_trans( matrix_layout, uplo, n, kb, bb, ldbb, bb_t, ldbb_t );
100  /* Call LAPACK function and adjust info */
101  LAPACK_ssbgvd( &jobz, &uplo, &n, &ka, &kb, ab_t, &ldab_t, bb_t, &ldbb_t,
102  w, z_t, &ldz_t, work, &lwork, iwork, &liwork, &info );
103  if( info < 0 ) {
104  info = info - 1;
105  }
106  /* Transpose output matrices */
107  LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, ka, ab_t, ldab_t, ab,
108  ldab );
109  LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, kb, bb_t, ldbb_t, bb,
110  ldbb );
111  if( LAPACKE_lsame( jobz, 'v' ) ) {
112  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
113  }
114  /* Release memory and exit */
115  if( LAPACKE_lsame( jobz, 'v' ) ) {
116  LAPACKE_free( z_t );
117  }
118 exit_level_2:
119  LAPACKE_free( bb_t );
120 exit_level_1:
121  LAPACKE_free( ab_t );
122 exit_level_0:
123  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
124  LAPACKE_xerbla( "LAPACKE_ssbgvd_work", info );
125  }
126  } else {
127  info = -1;
128  LAPACKE_xerbla( "LAPACKE_ssbgvd_work", info );
129  }
130  return info;
131 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_ssbgvd(...)
Definition: lapack.h:15084
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
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)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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