LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_chbgst_work ( int  matrix_layout,
char  vect,
char  uplo,
lapack_int  n,
lapack_int  ka,
lapack_int  kb,
lapack_complex_float *  ab,
lapack_int  ldab,
const lapack_complex_float *  bb,
lapack_int  ldbb,
lapack_complex_float *  x,
lapack_int  ldx,
lapack_complex_float *  work,
float *  rwork 
)

Definition at line 36 of file lapacke_chbgst_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_chbgst( &vect, &uplo, &n, &ka, &kb, ab, &ldab, bb, &ldbb, x,
47  &ldx, work, rwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int ldab_t = MAX(1,ka+1);
53  lapack_int ldbb_t = MAX(1,kb+1);
54  lapack_int ldx_t = MAX(1,n);
55  lapack_complex_float* ab_t = NULL;
56  lapack_complex_float* bb_t = NULL;
57  lapack_complex_float* x_t = NULL;
58  /* Check leading dimension(s) */
59  if( ldab < n ) {
60  info = -8;
61  LAPACKE_xerbla( "LAPACKE_chbgst_work", info );
62  return info;
63  }
64  if( ldbb < n ) {
65  info = -10;
66  LAPACKE_xerbla( "LAPACKE_chbgst_work", info );
67  return info;
68  }
69  if( ldx < n ) {
70  info = -12;
71  LAPACKE_xerbla( "LAPACKE_chbgst_work", info );
72  return info;
73  }
74  /* Allocate memory for temporary array(s) */
75  ab_t = (lapack_complex_float*)
76  LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
77  if( ab_t == NULL ) {
78  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
79  goto exit_level_0;
80  }
81  bb_t = (lapack_complex_float*)
82  LAPACKE_malloc( sizeof(lapack_complex_float) * ldbb_t * MAX(1,n) );
83  if( bb_t == NULL ) {
84  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
85  goto exit_level_1;
86  }
87  if( LAPACKE_lsame( vect, 'v' ) ) {
88  x_t = (lapack_complex_float*)
89  LAPACKE_malloc( sizeof(lapack_complex_float) *
90  ldx_t * MAX(1,n) );
91  if( x_t == NULL ) {
92  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
93  goto exit_level_2;
94  }
95  }
96  /* Transpose input matrices */
97  LAPACKE_chb_trans( matrix_layout, uplo, n, ka, ab, ldab, ab_t, ldab_t );
98  LAPACKE_chb_trans( matrix_layout, uplo, n, kb, bb, ldbb, bb_t, ldbb_t );
99  /* Call LAPACK function and adjust info */
100  LAPACK_chbgst( &vect, &uplo, &n, &ka, &kb, ab_t, &ldab_t, bb_t, &ldbb_t,
101  x_t, &ldx_t, work, rwork, &info );
102  if( info < 0 ) {
103  info = info - 1;
104  }
105  /* Transpose output matrices */
106  LAPACKE_chb_trans( LAPACK_COL_MAJOR, uplo, n, ka, ab_t, ldab_t, ab,
107  ldab );
108  if( LAPACKE_lsame( vect, 'v' ) ) {
109  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, x_t, ldx_t, x, ldx );
110  }
111  /* Release memory and exit */
112  if( LAPACKE_lsame( vect, 'v' ) ) {
113  LAPACKE_free( x_t );
114  }
115 exit_level_2:
116  LAPACKE_free( bb_t );
117 exit_level_1:
118  LAPACKE_free( ab_t );
119 exit_level_0:
120  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
121  LAPACKE_xerbla( "LAPACKE_chbgst_work", info );
122  }
123  } else {
124  info = -1;
125  LAPACKE_xerbla( "LAPACKE_chbgst_work", info );
126  }
127  return info;
128 }
LAPACKE_cge_trans
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
Definition: lapacke_cge_trans.c:40
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_complex_float
#define lapack_complex_float
Definition: lapacke.h:74
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:47
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:113
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
LAPACK_chbgst
void LAPACK_chbgst(char *vect, char *uplo, lapack_int *n, lapack_int *ka, lapack_int *kb, lapack_complex_float *ab, lapack_int *ldab, const lapack_complex_float *bb, lapack_int *ldbb, lapack_complex_float *x, lapack_int *ldx, lapack_complex_float *work, float *rwork, lapack_int *info)
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:37
lapack_int
#define lapack_int
Definition: lapacke.h:47
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
LAPACKE_chb_trans
void LAPACKE_chb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
Definition: lapacke_chb_trans.c:40

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