LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sspgv_work()

lapack_int LAPACKE_sspgv_work ( int  matrix_layout,
lapack_int  itype,
char  jobz,
char  uplo,
lapack_int  n,
float *  ap,
float *  bp,
float *  w,
float *  z,
lapack_int  ldz,
float *  work 
)

Definition at line 36 of file lapacke_sspgv_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_sspgv( &itype, &jobz, &uplo, &n, ap, bp, w, z, &ldz, work,
44  &info );
45  if( info < 0 ) {
46  info = info - 1;
47  }
48  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49  lapack_int ldz_t = MAX(1,n);
50  float* z_t = NULL;
51  float* ap_t = NULL;
52  float* bp_t = NULL;
53  /* Check leading dimension(s) */
54  if( ldz < n ) {
55  info = -10;
56  LAPACKE_xerbla( "LAPACKE_sspgv_work", info );
57  return info;
58  }
59  /* Allocate memory for temporary array(s) */
60  if( LAPACKE_lsame( jobz, 'v' ) ) {
61  z_t = (float*)LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,n) );
62  if( z_t == NULL ) {
64  goto exit_level_0;
65  }
66  }
67  ap_t = (float*)
68  LAPACKE_malloc( sizeof(float) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
69  if( ap_t == NULL ) {
71  goto exit_level_1;
72  }
73  bp_t = (float*)
74  LAPACKE_malloc( sizeof(float) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
75  if( bp_t == NULL ) {
77  goto exit_level_2;
78  }
79  /* Transpose input matrices */
80  LAPACKE_ssp_trans( matrix_layout, uplo, n, ap, ap_t );
81  LAPACKE_ssp_trans( matrix_layout, uplo, n, bp, bp_t );
82  /* Call LAPACK function and adjust info */
83  LAPACK_sspgv( &itype, &jobz, &uplo, &n, ap_t, bp_t, w, z_t, &ldz_t,
84  work, &info );
85  if( info < 0 ) {
86  info = info - 1;
87  }
88  /* Transpose output matrices */
89  if( LAPACKE_lsame( jobz, 'v' ) ) {
90  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
91  }
92  LAPACKE_ssp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
93  LAPACKE_ssp_trans( LAPACK_COL_MAJOR, uplo, n, bp_t, bp );
94  /* Release memory and exit */
95  LAPACKE_free( bp_t );
96 exit_level_2:
97  LAPACKE_free( ap_t );
98 exit_level_1:
99  if( LAPACKE_lsame( jobz, 'v' ) ) {
100  LAPACKE_free( z_t );
101  }
102 exit_level_0:
103  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
104  LAPACKE_xerbla( "LAPACKE_sspgv_work", info );
105  }
106  } else {
107  info = -1;
108  LAPACKE_xerbla( "LAPACKE_sspgv_work", info );
109  }
110  return info;
111 }
#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 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
void LAPACK_sspgv(lapack_int *itype, char *jobz, char *uplo, lapack_int *n, float *ap, float *bp, float *w, float *z, lapack_int *ldz, float *work, lapack_int *info)
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