LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_strevc_work()

lapack_int LAPACKE_strevc_work ( int  matrix_layout,
char  side,
char  howmny,
lapack_logical select,
lapack_int  n,
const float *  t,
lapack_int  ldt,
float *  vl,
lapack_int  ldvl,
float *  vr,
lapack_int  ldvr,
lapack_int  mm,
lapack_int m,
float *  work 
)

Definition at line 36 of file lapacke_strevc_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_strevc( &side, &howmny, select, &n, t, &ldt, vl, &ldvl, vr,
46  &ldvr, &mm, m, work, &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int ldt_t = MAX(1,n);
52  lapack_int ldvl_t = MAX(1,n);
53  lapack_int ldvr_t = MAX(1,n);
54  float* t_t = NULL;
55  float* vl_t = NULL;
56  float* vr_t = NULL;
57  /* Check leading dimension(s) */
58  if( ldt < n ) {
59  info = -7;
60  LAPACKE_xerbla( "LAPACKE_strevc_work", info );
61  return info;
62  }
63  if( ldvl < mm ) {
64  info = -9;
65  LAPACKE_xerbla( "LAPACKE_strevc_work", info );
66  return info;
67  }
68  if( ldvr < mm ) {
69  info = -11;
70  LAPACKE_xerbla( "LAPACKE_strevc_work", info );
71  return info;
72  }
73  /* Allocate memory for temporary array(s) */
74  t_t = (float*)LAPACKE_malloc( sizeof(float) * ldt_t * MAX(1,n) );
75  if( t_t == NULL ) {
77  goto exit_level_0;
78  }
79  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
80  vl_t = (float*)LAPACKE_malloc( sizeof(float) * ldvl_t * MAX(1,mm) );
81  if( vl_t == NULL ) {
83  goto exit_level_1;
84  }
85  }
86  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
87  vr_t = (float*)LAPACKE_malloc( sizeof(float) * ldvr_t * MAX(1,mm) );
88  if( vr_t == NULL ) {
90  goto exit_level_2;
91  }
92  }
93  /* Transpose input matrices */
94  LAPACKE_sge_trans( matrix_layout, n, n, t, ldt, t_t, ldt_t );
95  if( ( LAPACKE_lsame( side, 'l' ) || LAPACKE_lsame( side, 'b' ) ) &&
96  LAPACKE_lsame( howmny, 'b' ) ) {
97  LAPACKE_sge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
98  }
99  if( ( LAPACKE_lsame( side, 'r' ) || LAPACKE_lsame( side, 'b' ) ) &&
100  LAPACKE_lsame( howmny, 'b' ) ) {
101  LAPACKE_sge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
102  }
103  /* Call LAPACK function and adjust info */
104  LAPACK_strevc( &side, &howmny, select, &n, t_t, &ldt_t, vl_t, &ldvl_t,
105  vr_t, &ldvr_t, &mm, m, work, &info );
106  if( info < 0 ) {
107  info = info - 1;
108  }
109  /* Transpose output matrices */
110  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
111  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, mm, vl_t, ldvl_t, vl,
112  ldvl );
113  }
114  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
115  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, mm, vr_t, ldvr_t, vr,
116  ldvr );
117  }
118  /* Release memory and exit */
119  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
120  LAPACKE_free( vr_t );
121  }
122 exit_level_2:
123  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
124  LAPACKE_free( vl_t );
125  }
126 exit_level_1:
127  LAPACKE_free( t_t );
128 exit_level_0:
129  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
130  LAPACKE_xerbla( "LAPACKE_strevc_work", info );
131  }
132  } else {
133  info = -1;
134  LAPACKE_xerbla( "LAPACKE_strevc_work", info );
135  }
136  return info;
137 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_strevc(char *side, char *howmny, lapack_logical *select, lapack_int *n, const float *t, lapack_int *ldt, float *vl, lapack_int *ldvl, float *vr, lapack_int *ldvr, lapack_int *mm, lapack_int *m, float *work, 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: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
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