LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dpbsvx_work()

lapack_int LAPACKE_dpbsvx_work ( int  matrix_layout,
char  fact,
char  uplo,
lapack_int  n,
lapack_int  kd,
lapack_int  nrhs,
double *  ab,
lapack_int  ldab,
double *  afb,
lapack_int  ldafb,
char *  equed,
double *  s,
double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
double *  rcond,
double *  ferr,
double *  berr,
double *  work,
lapack_int iwork 
)

Definition at line 36 of file lapacke_dpbsvx_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_dpbsvx( &fact, &uplo, &n, &kd, &nrhs, ab, &ldab, afb, &ldafb,
48  equed, s, b, &ldb, x, &ldx, rcond, ferr, berr, work,
49  iwork, &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int ldab_t = MAX(1,kd+1);
55  lapack_int ldafb_t = MAX(1,kd+1);
56  lapack_int ldb_t = MAX(1,n);
57  lapack_int ldx_t = MAX(1,n);
58  double* ab_t = NULL;
59  double* afb_t = NULL;
60  double* b_t = NULL;
61  double* x_t = NULL;
62  /* Check leading dimension(s) */
63  if( ldab < n ) {
64  info = -8;
65  LAPACKE_xerbla( "LAPACKE_dpbsvx_work", info );
66  return info;
67  }
68  if( ldafb < n ) {
69  info = -10;
70  LAPACKE_xerbla( "LAPACKE_dpbsvx_work", info );
71  return info;
72  }
73  if( ldb < nrhs ) {
74  info = -14;
75  LAPACKE_xerbla( "LAPACKE_dpbsvx_work", info );
76  return info;
77  }
78  if( ldx < nrhs ) {
79  info = -16;
80  LAPACKE_xerbla( "LAPACKE_dpbsvx_work", info );
81  return info;
82  }
83  /* Allocate memory for temporary array(s) */
84  ab_t = (double*)LAPACKE_malloc( sizeof(double) * ldab_t * MAX(1,n) );
85  if( ab_t == NULL ) {
87  goto exit_level_0;
88  }
89  afb_t = (double*)LAPACKE_malloc( sizeof(double) * ldafb_t * MAX(1,n) );
90  if( afb_t == NULL ) {
92  goto exit_level_1;
93  }
94  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
95  if( b_t == NULL ) {
97  goto exit_level_2;
98  }
99  x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
100  if( x_t == NULL ) {
102  goto exit_level_3;
103  }
104  /* Transpose input matrices */
105  LAPACKE_dpb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
106  if( LAPACKE_lsame( fact, 'f' ) ) {
107  LAPACKE_dpb_trans( matrix_layout, uplo, n, kd, afb, ldafb, afb_t,
108  ldafb_t );
109  }
110  LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
111  /* Call LAPACK function and adjust info */
112  LAPACK_dpbsvx( &fact, &uplo, &n, &kd, &nrhs, ab_t, &ldab_t, afb_t,
113  &ldafb_t, equed, s, b_t, &ldb_t, x_t, &ldx_t, rcond,
114  ferr, berr, work, iwork, &info );
115  if( info < 0 ) {
116  info = info - 1;
117  }
118  /* Transpose output matrices */
119  if( LAPACKE_lsame( fact, 'e' ) && LAPACKE_lsame( *equed, 'y' ) ) {
120  LAPACKE_dpb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
121  ldab );
122  }
123  if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
124  LAPACKE_dpb_trans( LAPACK_COL_MAJOR, uplo, n, kd, afb_t, ldafb_t,
125  afb, ldafb );
126  }
127  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
128  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
129  /* Release memory and exit */
130  LAPACKE_free( x_t );
131 exit_level_3:
132  LAPACKE_free( b_t );
133 exit_level_2:
134  LAPACKE_free( afb_t );
135 exit_level_1:
136  LAPACKE_free( ab_t );
137 exit_level_0:
138  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
139  LAPACKE_xerbla( "LAPACKE_dpbsvx_work", info );
140  }
141  } else {
142  info = -1;
143  LAPACKE_xerbla( "LAPACKE_dpbsvx_work", info );
144  }
145  return info;
146 }
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACK_dpbsvx(char *fact, char *uplo, lapack_int *n, lapack_int *kd, lapack_int *nrhs, double *ab, lapack_int *ldab, double *afb, lapack_int *ldafb, char *equed, double *s, double *b, lapack_int *ldb, double *x, lapack_int *ldx, double *rcond, double *ferr, double *berr, double *work, lapack_int *iwork, lapack_int *info)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
void LAPACKE_dpb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#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: