LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ssygvx()

lapack_int LAPACKE_ssygvx ( int  matrix_layout,
lapack_int  itype,
char  jobz,
char  range,
char  uplo,
lapack_int  n,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb,
float  vl,
float  vu,
lapack_int  il,
lapack_int  iu,
float  abstol,
lapack_int m,
float *  w,
float *  z,
lapack_int  ldz,
lapack_int ifail 
)

Definition at line 36 of file lapacke_ssygvx.c.

42 {
43  lapack_int info = 0;
44  lapack_int lwork = -1;
45  lapack_int* iwork = NULL;
46  float* work = NULL;
47  float work_query;
48  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49  LAPACKE_xerbla( "LAPACKE_ssygvx", -1 );
50  return -1;
51  }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
53  if( LAPACKE_get_nancheck() ) {
54  /* Optionally check input matrices for NaNs */
55  if( LAPACKE_ssy_nancheck( matrix_layout, uplo, n, a, lda ) ) {
56  return -7;
57  }
58  if( LAPACKE_s_nancheck( 1, &abstol, 1 ) ) {
59  return -15;
60  }
61  if( LAPACKE_sge_nancheck( matrix_layout, n, n, b, ldb ) ) {
62  return -9;
63  }
64  if( LAPACKE_lsame( range, 'v' ) ) {
65  if( LAPACKE_s_nancheck( 1, &vl, 1 ) ) {
66  return -11;
67  }
68  }
69  if( LAPACKE_lsame( range, 'v' ) ) {
70  if( LAPACKE_s_nancheck( 1, &vu, 1 ) ) {
71  return -12;
72  }
73  }
74  }
75 #endif
76  /* Allocate memory for working array(s) */
77  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
78  if( iwork == NULL ) {
80  goto exit_level_0;
81  }
82  /* Query optimal working array(s) size */
83  info = LAPACKE_ssygvx_work( matrix_layout, itype, jobz, range, uplo, n, a,
84  lda, b, ldb, vl, vu, il, iu, abstol, m, w, z,
85  ldz, &work_query, lwork, iwork, ifail );
86  if( info != 0 ) {
87  goto exit_level_1;
88  }
89  lwork = (lapack_int)work_query;
90  /* Allocate memory for work arrays */
91  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
92  if( work == NULL ) {
94  goto exit_level_1;
95  }
96  /* Call middle-level interface */
97  info = LAPACKE_ssygvx_work( matrix_layout, itype, jobz, range, uplo, n, a,
98  lda, b, ldb, vl, vu, il, iu, abstol, m, w, z,
99  ldz, work, lwork, iwork, ifail );
100  /* Release memory and exit */
101  LAPACKE_free( work );
102 exit_level_1:
103  LAPACKE_free( iwork );
104 exit_level_0:
105  if( info == LAPACK_WORK_MEMORY_ERROR ) {
106  LAPACKE_xerbla( "LAPACKE_ssygvx", info );
107  }
108  return info;
109 }
lapack_logical LAPACKE_ssy_nancheck(int matrix_layout, char uplo, lapack_int n, const float *a, lapack_int lda)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
lapack_int LAPACKE_ssygvx_work(int matrix_layout, lapack_int itype, char jobz, char range, char uplo, lapack_int n, float *a, lapack_int lda, float *b, lapack_int ldb, float vl, float vu, lapack_int il, lapack_int iu, float abstol, lapack_int *m, float *w, float *z, lapack_int ldz, float *work, lapack_int lwork, lapack_int *iwork, lapack_int *ifail)
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
#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
int LAPACKE_get_nancheck()
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