LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zpbrfs_work()

lapack_int LAPACKE_zpbrfs_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  kd,
lapack_int  nrhs,
const lapack_complex_double ab,
lapack_int  ldab,
const lapack_complex_double afb,
lapack_int  ldafb,
const lapack_complex_double b,
lapack_int  ldb,
lapack_complex_double x,
lapack_int  ldx,
double *  ferr,
double *  berr,
lapack_complex_double work,
double *  rwork 
)

Definition at line 35 of file lapacke_zpbrfs_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_zpbrfs( &uplo, &n, &kd, &nrhs, ab, &ldab, afb, &ldafb, b, &ldb,
50  x, &ldx, ferr, berr, work, rwork, &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,kd+1);
56  lapack_int ldafb_t = MAX(1,kd+1);
57  lapack_int ldb_t = MAX(1,n);
58  lapack_int ldx_t = MAX(1,n);
59  lapack_complex_double* ab_t = NULL;
60  lapack_complex_double* afb_t = NULL;
61  lapack_complex_double* b_t = NULL;
62  lapack_complex_double* x_t = NULL;
63  /* Check leading dimension(s) */
64  if( ldab < n ) {
65  info = -7;
66  LAPACKE_xerbla( "LAPACKE_zpbrfs_work", info );
67  return info;
68  }
69  if( ldafb < n ) {
70  info = -9;
71  LAPACKE_xerbla( "LAPACKE_zpbrfs_work", info );
72  return info;
73  }
74  if( ldb < nrhs ) {
75  info = -11;
76  LAPACKE_xerbla( "LAPACKE_zpbrfs_work", info );
77  return info;
78  }
79  if( ldx < nrhs ) {
80  info = -13;
81  LAPACKE_xerbla( "LAPACKE_zpbrfs_work", info );
82  return info;
83  }
84  /* Allocate memory for temporary array(s) */
85  ab_t = (lapack_complex_double*)
86  LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
87  if( ab_t == NULL ) {
89  goto exit_level_0;
90  }
91  afb_t = (lapack_complex_double*)
93  ldafb_t * MAX(1,n) );
94  if( afb_t == NULL ) {
96  goto exit_level_1;
97  }
98  b_t = (lapack_complex_double*)
100  ldb_t * MAX(1,nrhs) );
101  if( b_t == NULL ) {
103  goto exit_level_2;
104  }
105  x_t = (lapack_complex_double*)
107  ldx_t * MAX(1,nrhs) );
108  if( x_t == NULL ) {
110  goto exit_level_3;
111  }
112  /* Transpose input matrices */
113  LAPACKE_zpb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
114  LAPACKE_zpb_trans( matrix_layout, uplo, n, kd, afb, ldafb, afb_t,
115  ldafb_t );
116  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
117  LAPACKE_zge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
118  /* Call LAPACK function and adjust info */
119  LAPACK_zpbrfs( &uplo, &n, &kd, &nrhs, ab_t, &ldab_t, afb_t, &ldafb_t,
120  b_t, &ldb_t, x_t, &ldx_t, ferr, berr, work, rwork,
121  &info );
122  if( info < 0 ) {
123  info = info - 1;
124  }
125  /* Transpose output matrices */
126  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
127  /* Release memory and exit */
128  LAPACKE_free( x_t );
129 exit_level_3:
130  LAPACKE_free( b_t );
131 exit_level_2:
132  LAPACKE_free( afb_t );
133 exit_level_1:
134  LAPACKE_free( ab_t );
135 exit_level_0:
136  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
137  LAPACKE_xerbla( "LAPACKE_zpbrfs_work", info );
138  }
139  } else {
140  info = -1;
141  LAPACKE_xerbla( "LAPACKE_zpbrfs_work", info );
142  }
143  return info;
144 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_zpbrfs(...)
Definition: lapack.h:12047
#define lapack_complex_double
Definition: lapack.h:63
#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
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
void LAPACKE_zpb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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