LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ssbgvx_work()

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 
)

Definition at line 36 of file lapacke_ssbgvx_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_ssbgvx( &jobz, &range, &uplo, &n, &ka, &kb, ab, &ldab, bb, &ldbb,
50  q, &ldq, &vl, &vu, &il, &iu, &abstol, m, w, z, &ldz,
51  work, iwork, ifail, &info );
52  if( info < 0 ) {
53  info = info - 1;
54  }
55  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56  lapack_int ldab_t = MAX(1,ka+1);
57  lapack_int ldbb_t = MAX(1,kb+1);
58  lapack_int ldq_t = MAX(1,n);
59  lapack_int ldz_t = MAX(1,n);
60  float* ab_t = NULL;
61  float* bb_t = NULL;
62  float* q_t = NULL;
63  float* z_t = NULL;
64  /* Check leading dimension(s) */
65  if( ldab < n ) {
66  info = -9;
67  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
68  return info;
69  }
70  if( ldbb < n ) {
71  info = -11;
72  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
73  return info;
74  }
75  if( ldq < n ) {
76  info = -13;
77  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
78  return info;
79  }
80  if( ldz < n ) {
81  info = -22;
82  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
83  return info;
84  }
85  /* Allocate memory for temporary array(s) */
86  ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
87  if( ab_t == NULL ) {
89  goto exit_level_0;
90  }
91  bb_t = (float*)LAPACKE_malloc( sizeof(float) * ldbb_t * MAX(1,n) );
92  if( bb_t == NULL ) {
94  goto exit_level_1;
95  }
96  if( LAPACKE_lsame( jobz, 'v' ) ) {
97  q_t = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
98  if( q_t == NULL ) {
100  goto exit_level_2;
101  }
102  }
103  if( LAPACKE_lsame( jobz, 'v' ) ) {
104  z_t = (float*)LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,n) );
105  if( z_t == NULL ) {
107  goto exit_level_3;
108  }
109  }
110  /* Transpose input matrices */
111  LAPACKE_ssb_trans( matrix_layout, uplo, n, ka, ab, ldab, ab_t, ldab_t );
112  LAPACKE_ssb_trans( matrix_layout, uplo, n, kb, bb, ldbb, bb_t, ldbb_t );
113  /* Call LAPACK function and adjust info */
114  LAPACK_ssbgvx( &jobz, &range, &uplo, &n, &ka, &kb, ab_t, &ldab_t, bb_t,
115  &ldbb_t, q_t, &ldq_t, &vl, &vu, &il, &iu, &abstol, m, w,
116  z_t, &ldz_t, work, iwork, ifail, &info );
117  if( info < 0 ) {
118  info = info - 1;
119  }
120  /* Transpose output matrices */
121  LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, ka, ab_t, ldab_t, ab,
122  ldab );
123  LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, kb, bb_t, ldbb_t, bb,
124  ldbb );
125  if( LAPACKE_lsame( jobz, 'v' ) ) {
126  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
127  }
128  if( LAPACKE_lsame( jobz, 'v' ) ) {
129  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
130  }
131  /* Release memory and exit */
132  if( LAPACKE_lsame( jobz, 'v' ) ) {
133  LAPACKE_free( z_t );
134  }
135 exit_level_3:
136  if( LAPACKE_lsame( jobz, 'v' ) ) {
137  LAPACKE_free( q_t );
138  }
139 exit_level_2:
140  LAPACKE_free( bb_t );
141 exit_level_1:
142  LAPACKE_free( ab_t );
143 exit_level_0:
144  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
145  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
146  }
147  } else {
148  info = -1;
149  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
150  }
151  return info;
152 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
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
void LAPACKE_ssb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const float *in, lapack_int ldin, float *out, lapack_int ldout)
void LAPACK_ssbgvx(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, lapack_int *info)
#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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