LAPACK  3.10.0
LAPACK: Linear Algebra PACKage
lapacke_ssbgvx_work.c
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function ssbgvx
30 * Author: Intel Corporation
31 *****************************************************************************/
32 
33 #include "lapacke_utils.h"
34 
35 lapack_int LAPACKE_ssbgvx_work( int matrix_layout, char jobz, char range,
36  char uplo, lapack_int n, lapack_int ka,
37  lapack_int kb, float* ab, lapack_int ldab,
38  float* bb, lapack_int ldbb, float* q,
39  lapack_int ldq, float vl, float vu,
40  lapack_int il, lapack_int iu, float abstol,
41  lapack_int* m, float* w, float* z,
42  lapack_int ldz, float* work, lapack_int* iwork,
43  lapack_int* ifail )
44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_ssbgvx( &jobz, &range, &uplo, &n, &ka, &kb, ab, &ldab, bb, &ldbb,
49  q, &ldq, &vl, &vu, &il, &iu, &abstol, m, w, z, &ldz,
50  work, iwork, ifail, &info );
51  if( info < 0 ) {
52  info = info - 1;
53  }
54  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55  lapack_int ldab_t = MAX(1,ka+1);
56  lapack_int ldbb_t = MAX(1,kb+1);
57  lapack_int ldq_t = MAX(1,n);
58  lapack_int ldz_t = MAX(1,n);
59  float* ab_t = NULL;
60  float* bb_t = NULL;
61  float* q_t = NULL;
62  float* z_t = NULL;
63  /* Check leading dimension(s) */
64  if( ldab < n ) {
65  info = -9;
66  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
67  return info;
68  }
69  if( ldbb < n ) {
70  info = -11;
71  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
72  return info;
73  }
74  if( ldq < n ) {
75  info = -13;
76  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
77  return info;
78  }
79  if( ldz < n ) {
80  info = -22;
81  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
82  return info;
83  }
84  /* Allocate memory for temporary array(s) */
85  ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
86  if( ab_t == NULL ) {
88  goto exit_level_0;
89  }
90  bb_t = (float*)LAPACKE_malloc( sizeof(float) * ldbb_t * MAX(1,n) );
91  if( bb_t == NULL ) {
93  goto exit_level_1;
94  }
95  if( LAPACKE_lsame( jobz, 'v' ) ) {
96  q_t = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
97  if( q_t == NULL ) {
99  goto exit_level_2;
100  }
101  }
102  if( LAPACKE_lsame( jobz, 'v' ) ) {
103  z_t = (float*)LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,n) );
104  if( z_t == NULL ) {
106  goto exit_level_3;
107  }
108  }
109  /* Transpose input matrices */
110  LAPACKE_ssb_trans( matrix_layout, uplo, n, ka, ab, ldab, ab_t, ldab_t );
111  LAPACKE_ssb_trans( matrix_layout, uplo, n, kb, bb, ldbb, bb_t, ldbb_t );
112  /* Call LAPACK function and adjust info */
113  LAPACK_ssbgvx( &jobz, &range, &uplo, &n, &ka, &kb, ab_t, &ldab_t, bb_t,
114  &ldbb_t, q_t, &ldq_t, &vl, &vu, &il, &iu, &abstol, m, w,
115  z_t, &ldz_t, work, iwork, ifail, &info );
116  if( info < 0 ) {
117  info = info - 1;
118  }
119  /* Transpose output matrices */
120  LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, ka, ab_t, ldab_t, ab,
121  ldab );
122  LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, kb, bb_t, ldbb_t, bb,
123  ldbb );
124  if( LAPACKE_lsame( jobz, 'v' ) ) {
125  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
126  }
127  if( LAPACKE_lsame( jobz, 'v' ) ) {
128  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
129  }
130  /* Release memory and exit */
131  if( LAPACKE_lsame( jobz, 'v' ) ) {
132  LAPACKE_free( z_t );
133  }
134 exit_level_3:
135  if( LAPACKE_lsame( jobz, 'v' ) ) {
136  LAPACKE_free( q_t );
137  }
138 exit_level_2:
139  LAPACKE_free( bb_t );
140 exit_level_1:
141  LAPACKE_free( ab_t );
142 exit_level_0:
143  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
144  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
145  }
146  } else {
147  info = -1;
148  LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
149  }
150  return info;
151 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_ssbgvx(...)
Definition: lapack.h:15134
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
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)
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)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
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:46