LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_cheevr ( int  matrix_layout,
char  jobz,
char  range,
char  uplo,
lapack_int  n,
lapack_complex_float *  a,
lapack_int  lda,
float  vl,
float  vu,
lapack_int  il,
lapack_int  iu,
float  abstol,
lapack_int *  m,
float *  w,
lapack_complex_float *  z,
lapack_int  ldz,
lapack_int *  isuppz 
)

Definition at line 36 of file lapacke_cheevr.c.

42 {
43  lapack_int info = 0;
44  lapack_int liwork = -1;
45  lapack_int lrwork = -1;
46  lapack_int lwork = -1;
47  lapack_int* iwork = NULL;
48  float* rwork = NULL;
49  lapack_complex_float* work = NULL;
50  lapack_int iwork_query;
51  float rwork_query;
52  lapack_complex_float work_query;
53  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
54  LAPACKE_xerbla( "LAPACKE_cheevr", -1 );
55  return -1;
56  }
57 #ifndef LAPACK_DISABLE_NAN_CHECK
58  /* Optionally check input matrices for NaNs */
59  if( LAPACKE_che_nancheck( matrix_layout, uplo, n, a, lda ) ) {
60  return -6;
61  }
62  if( LAPACKE_s_nancheck( 1, &abstol, 1 ) ) {
63  return -12;
64  }
65  if( LAPACKE_lsame( range, 'v' ) ) {
66  if( LAPACKE_s_nancheck( 1, &vl, 1 ) ) {
67  return -8;
68  }
69  }
70  if( LAPACKE_lsame( range, 'v' ) ) {
71  if( LAPACKE_s_nancheck( 1, &vu, 1 ) ) {
72  return -9;
73  }
74  }
75 #endif
76  /* Query optimal working array(s) size */
77  info = LAPACKE_cheevr_work( matrix_layout, jobz, range, uplo, n, a, lda, vl,
78  vu, il, iu, abstol, m, w, z, ldz, isuppz,
79  &work_query, lwork, &rwork_query, lrwork,
80  &iwork_query, liwork );
81  if( info != 0 ) {
82  goto exit_level_0;
83  }
84  liwork = (lapack_int)iwork_query;
85  lrwork = (lapack_int)rwork_query;
86  lwork = LAPACK_C2INT( work_query );
87  /* Allocate memory for work arrays */
88  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
89  if( iwork == NULL ) {
90  info = LAPACK_WORK_MEMORY_ERROR;
91  goto exit_level_0;
92  }
93  rwork = (float*)LAPACKE_malloc( sizeof(float) * lrwork );
94  if( rwork == NULL ) {
95  info = LAPACK_WORK_MEMORY_ERROR;
96  goto exit_level_1;
97  }
98  work = (lapack_complex_float*)
99  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
100  if( work == NULL ) {
101  info = LAPACK_WORK_MEMORY_ERROR;
102  goto exit_level_2;
103  }
104  /* Call middle-level interface */
105  info = LAPACKE_cheevr_work( matrix_layout, jobz, range, uplo, n, a, lda, vl,
106  vu, il, iu, abstol, m, w, z, ldz, isuppz, work,
107  lwork, rwork, lrwork, iwork, liwork );
108  /* Release memory and exit */
109  LAPACKE_free( work );
110 exit_level_2:
111  LAPACKE_free( rwork );
112 exit_level_1:
113  LAPACKE_free( iwork );
114 exit_level_0:
115  if( info == LAPACK_WORK_MEMORY_ERROR ) {
116  LAPACKE_xerbla( "LAPACKE_cheevr", info );
117  }
118  return info;
119 }
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
LAPACK_WORK_MEMORY_ERROR
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
lapack_complex_float
#define lapack_complex_float
Definition: lapacke.h:74
LAPACKE_s_nancheck
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
Definition: lapacke_s_nancheck.c:37
LAPACKE_cheevr_work
lapack_int LAPACKE_cheevr_work(int matrix_layout, char jobz, char range, char uplo, lapack_int n, lapack_complex_float *a, lapack_int lda, float vl, float vu, lapack_int il, lapack_int iu, float abstol, lapack_int *m, float *w, lapack_complex_float *z, lapack_int ldz, lapack_int *isuppz, lapack_complex_float *work, lapack_int lwork, float *rwork, lapack_int lrwork, lapack_int *iwork, lapack_int liwork)
Definition: lapacke_cheevr_work.c:36
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:113
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
LAPACK_C2INT
#define LAPACK_C2INT(x)
Definition: lapacke.h:116
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:37
LAPACKE_che_nancheck
lapack_logical LAPACKE_che_nancheck(int matrix_layout, char uplo, lapack_int n, const lapack_complex_float *a, lapack_int lda)
Definition: lapacke_che_nancheck.c:37
lapack_int
#define lapack_int
Definition: lapacke.h:47

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