LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ssbgvx()

lapack_int LAPACKE_ssbgvx ( int  matrix_layout,
char  jobz,
char  range,
char  uplo,
lapack_int  n,
lapack_int  ka,
lapack_int  kb,
float *  ab,
lapack_int  ldab,
float *  bb,
lapack_int  ldbb,
float *  q,
lapack_int  ldq,
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_ssbgvx.c.

43 {
44  lapack_int info = 0;
45  lapack_int* iwork = NULL;
46  float* work = NULL;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_ssbgvx", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  /* Optionally check input matrices for NaNs */
53  if( LAPACKE_ssb_nancheck( matrix_layout, uplo, n, ka, ab, ldab ) ) {
54  return -8;
55  }
56  if( LAPACKE_s_nancheck( 1, &abstol, 1 ) ) {
57  return -18;
58  }
59  if( LAPACKE_ssb_nancheck( matrix_layout, uplo, n, kb, bb, ldbb ) ) {
60  return -10;
61  }
62  if( LAPACKE_lsame( range, 'v' ) ) {
63  if( LAPACKE_s_nancheck( 1, &vl, 1 ) ) {
64  return -14;
65  }
66  }
67  if( LAPACKE_lsame( range, 'v' ) ) {
68  if( LAPACKE_s_nancheck( 1, &vu, 1 ) ) {
69  return -15;
70  }
71  }
72 #endif
73  /* Allocate memory for working array(s) */
74  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
75  if( iwork == NULL ) {
77  goto exit_level_0;
78  }
79  work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,7*n) );
80  if( work == NULL ) {
82  goto exit_level_1;
83  }
84  /* Call middle-level interface */
85  info = LAPACKE_ssbgvx_work( matrix_layout, jobz, range, uplo, n, ka, kb, ab,
86  ldab, bb, ldbb, q, ldq, vl, vu, il, iu, abstol,
87  m, w, z, ldz, work, iwork, ifail );
88  /* Release memory and exit */
89  LAPACKE_free( work );
90 exit_level_1:
91  LAPACKE_free( iwork );
92 exit_level_0:
93  if( info == LAPACK_WORK_MEMORY_ERROR ) {
94  LAPACKE_xerbla( "LAPACKE_ssbgvx", info );
95  }
96  return info;
97 }
lapack_int LAPACKE_ssbgvx_work(int matrix_layout, char jobz, char range, char uplo, lapack_int n, lapack_int ka, lapack_int kb, float *ab, lapack_int ldab, float *bb, lapack_int ldbb, float *q, lapack_int ldq, 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 *iwork, lapack_int *ifail)
#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_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
lapack_logical LAPACKE_ssb_nancheck(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const float *ab, lapack_int ldab)
#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
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