LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sspevd_work()

lapack_int LAPACKE_sspevd_work ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
float *  ap,
float *  w,
float *  z,
lapack_int  ldz,
float *  work,
lapack_int  lwork,
lapack_int iwork,
lapack_int  liwork 
)

Definition at line 36 of file lapacke_sspevd_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_sspevd( &jobz, &uplo, &n, ap, w, z, &ldz, work, &lwork, iwork,
45  &liwork, &info );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int ldz_t = MAX(1,n);
51  float* z_t = NULL;
52  float* ap_t = NULL;
53  /* Check leading dimension(s) */
54  if( ldz < n ) {
55  info = -8;
56  LAPACKE_xerbla( "LAPACKE_sspevd_work", info );
57  return info;
58  }
59  /* Query optimal working array(s) size if requested */
60  if( liwork == -1 || lwork == -1 ) {
61  LAPACK_sspevd( &jobz, &uplo, &n, ap, w, z, &ldz_t, work, &lwork,
62  iwork, &liwork, &info );
63  return (info < 0) ? (info - 1) : info;
64  }
65  /* Allocate memory for temporary array(s) */
66  if( LAPACKE_lsame( jobz, 'v' ) ) {
67  z_t = (float*)LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,n) );
68  if( z_t == NULL ) {
70  goto exit_level_0;
71  }
72  }
73  ap_t = (float*)
74  LAPACKE_malloc( sizeof(float) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
75  if( ap_t == NULL ) {
77  goto exit_level_1;
78  }
79  /* Transpose input matrices */
80  LAPACKE_ssp_trans( matrix_layout, uplo, n, ap, ap_t );
81  /* Call LAPACK function and adjust info */
82  LAPACK_sspevd( &jobz, &uplo, &n, ap_t, w, z_t, &ldz_t, work, &lwork,
83  iwork, &liwork, &info );
84  if( info < 0 ) {
85  info = info - 1;
86  }
87  /* Transpose output matrices */
88  if( LAPACKE_lsame( jobz, 'v' ) ) {
89  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
90  }
91  LAPACKE_ssp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
92  /* Release memory and exit */
93  LAPACKE_free( ap_t );
94 exit_level_1:
95  if( LAPACKE_lsame( jobz, 'v' ) ) {
96  LAPACKE_free( z_t );
97  }
98 exit_level_0:
99  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
100  LAPACKE_xerbla( "LAPACKE_sspevd_work", info );
101  }
102  } else {
103  info = -1;
104  LAPACKE_xerbla( "LAPACKE_sspevd_work", info );
105  }
106  return info;
107 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_ssp_trans(int matrix_layout, char uplo, lapack_int n, const float *in, float *out)
void LAPACK_sspevd(char *jobz, char *uplo, lapack_int *n, float *ap, float *w, float *z, lapack_int *ldz, float *work, lapack_int *lwork, lapack_int *iwork, lapack_int *liwork, 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:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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