LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sggev3_work()

lapack_int LAPACKE_sggev3_work ( int  matrix_layout,
char  jobvl,
char  jobvr,
lapack_int  n,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb,
float *  alphar,
float *  alphai,
float *  beta,
float *  vl,
lapack_int  ldvl,
float *  vr,
lapack_int  ldvr,
float *  work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_sggev3_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_sggev3( &jobvl, &jobvr, &n, a, &lda, b, &ldb, alphar, alphai,
49  beta, vl, &ldvl, vr, &ldvr, work, &lwork, &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int nrows_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
55  lapack_int ncols_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
56  lapack_int nrows_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
57  lapack_int ncols_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
58  lapack_int lda_t = MAX(1,n);
59  lapack_int ldb_t = MAX(1,n);
60  lapack_int ldvl_t = MAX(1,nrows_vl);
61  lapack_int ldvr_t = MAX(1,nrows_vr);
62  float* a_t = NULL;
63  float* b_t = NULL;
64  float* vl_t = NULL;
65  float* vr_t = NULL;
66  /* Check leading dimension(s) */
67  if( lda < n ) {
68  info = -6;
69  LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
70  return info;
71  }
72  if( ldb < n ) {
73  info = -8;
74  LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
75  return info;
76  }
77  if( ldvl < ncols_vl ) {
78  info = -13;
79  LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
80  return info;
81  }
82  if( ldvr < ncols_vr ) {
83  info = -15;
84  LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
85  return info;
86  }
87  /* Query optimal working array(s) size if requested */
88  if( lwork == -1 ) {
89  LAPACK_sggev3( &jobvl, &jobvr, &n, a, &lda_t, b, &ldb_t,
90  alphar, alphai, beta, vl, &ldvl_t, vr, &ldvr_t,
91  work, &lwork, &info );
92  return (info < 0) ? (info - 1) : info;
93  }
94  /* Allocate memory for temporary array(s) */
95  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
96  if( a_t == NULL ) {
98  goto exit_level_0;
99  }
100  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
101  if( b_t == NULL ) {
103  goto exit_level_1;
104  }
105  if( LAPACKE_lsame( jobvl, 'v' ) ) {
106  vl_t = (float*)
107  LAPACKE_malloc( sizeof(float) * ldvl_t * MAX(1,ncols_vl) );
108  if( vl_t == NULL ) {
110  goto exit_level_2;
111  }
112  }
113  if( LAPACKE_lsame( jobvr, 'v' ) ) {
114  vr_t = (float*)
115  LAPACKE_malloc( sizeof(float) * ldvr_t * MAX(1,ncols_vr) );
116  if( vr_t == NULL ) {
118  goto exit_level_3;
119  }
120  }
121  /* Transpose input matrices */
122  LAPACKE_sge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
123  LAPACKE_sge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
124  /* Call LAPACK function and adjust info */
125  LAPACK_sggev3( &jobvl, &jobvr, &n, a_t, &lda_t, b_t, &ldb_t, alphar,
126  alphai, beta, vl_t, &ldvl_t, vr_t, &ldvr_t,
127  work, &lwork, &info );
128  if( info < 0 ) {
129  info = info - 1;
130  }
131  /* Transpose output matrices */
132  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
133  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
134  if( LAPACKE_lsame( jobvl, 'v' ) ) {
135  LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrows_vl, ncols_vl, vl_t,
136  ldvl_t, vl, ldvl );
137  }
138  if( LAPACKE_lsame( jobvr, 'v' ) ) {
139  LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrows_vr, ncols_vr, vr_t,
140  ldvr_t, vr, ldvr );
141  }
142  /* Release memory and exit */
143  if( LAPACKE_lsame( jobvr, 'v' ) ) {
144  LAPACKE_free( vr_t );
145  }
146 exit_level_3:
147  if( LAPACKE_lsame( jobvl, 'v' ) ) {
148  LAPACKE_free( vl_t );
149  }
150 exit_level_2:
151  LAPACKE_free( b_t );
152 exit_level_1:
153  LAPACKE_free( a_t );
154 exit_level_0:
155  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
156  LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
157  }
158  } else {
159  info = -1;
160  LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
161  }
162  return info;
163 }
void LAPACK_sggev3(char *jobvl, char *jobvr, lapack_int *n, float *a, lapack_int *lda, float *b, lapack_int *ldb, float *alphar, float *alphai, float *beta, float *vl, lapack_int *ldvl, float *vr, lapack_int *ldvr, float *work, lapack_int *lwork, lapack_int *info)
#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
#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
Here is the call graph for this function:
Here is the caller graph for this function: