LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zpbsvx_work()

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

Definition at line 36 of file lapacke_zpbsvx_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_zpbsvx( &fact, &uplo, &n, &kd, &nrhs, ab, &ldab, afb, &ldafb,
50  equed, s, b, &ldb, x, &ldx, rcond, ferr, berr, work,
51  rwork, &info );
52  if( info < 0 ) {
53  info = info - 1;
54  }
55  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56  lapack_int ldab_t = MAX(1,kd+1);
57  lapack_int ldafb_t = MAX(1,kd+1);
58  lapack_int ldb_t = MAX(1,n);
59  lapack_int ldx_t = MAX(1,n);
60  lapack_complex_double* ab_t = NULL;
61  lapack_complex_double* afb_t = NULL;
62  lapack_complex_double* b_t = NULL;
63  lapack_complex_double* x_t = NULL;
64  /* Check leading dimension(s) */
65  if( ldab < n ) {
66  info = -8;
67  LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
68  return info;
69  }
70  if( ldafb < n ) {
71  info = -10;
72  LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
73  return info;
74  }
75  if( ldb < nrhs ) {
76  info = -14;
77  LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
78  return info;
79  }
80  if( ldx < nrhs ) {
81  info = -16;
82  LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
83  return info;
84  }
85  /* Allocate memory for temporary array(s) */
86  ab_t = (lapack_complex_double*)
87  LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
88  if( ab_t == NULL ) {
90  goto exit_level_0;
91  }
92  afb_t = (lapack_complex_double*)
94  ldafb_t * MAX(1,n) );
95  if( afb_t == NULL ) {
97  goto exit_level_1;
98  }
99  b_t = (lapack_complex_double*)
101  ldb_t * MAX(1,nrhs) );
102  if( b_t == NULL ) {
104  goto exit_level_2;
105  }
106  x_t = (lapack_complex_double*)
108  ldx_t * MAX(1,nrhs) );
109  if( x_t == NULL ) {
111  goto exit_level_3;
112  }
113  /* Transpose input matrices */
114  LAPACKE_zpb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
115  if( LAPACKE_lsame( fact, 'f' ) ) {
116  LAPACKE_zpb_trans( matrix_layout, uplo, n, kd, afb, ldafb, afb_t,
117  ldafb_t );
118  }
119  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
120  /* Call LAPACK function and adjust info */
121  LAPACK_zpbsvx( &fact, &uplo, &n, &kd, &nrhs, ab_t, &ldab_t, afb_t,
122  &ldafb_t, equed, s, b_t, &ldb_t, x_t, &ldx_t, rcond,
123  ferr, berr, work, rwork, &info );
124  if( info < 0 ) {
125  info = info - 1;
126  }
127  /* Transpose output matrices */
128  if( LAPACKE_lsame( fact, 'e' ) && LAPACKE_lsame( *equed, 'y' ) ) {
129  LAPACKE_zpb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
130  ldab );
131  }
132  if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
133  LAPACKE_zpb_trans( LAPACK_COL_MAJOR, uplo, n, kd, afb_t, ldafb_t,
134  afb, ldafb );
135  }
136  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
137  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
138  /* Release memory and exit */
139  LAPACKE_free( x_t );
140 exit_level_3:
141  LAPACKE_free( b_t );
142 exit_level_2:
143  LAPACKE_free( afb_t );
144 exit_level_1:
145  LAPACKE_free( ab_t );
146 exit_level_0:
147  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
148  LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
149  }
150  } else {
151  info = -1;
152  LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
153  }
154  return info;
155 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
void LAPACK_zpbsvx(char *fact, char *uplo, lapack_int *n, lapack_int *kd, lapack_int *nrhs, lapack_complex_double *ab, lapack_int *ldab, lapack_complex_double *afb, lapack_int *ldafb, char *equed, double *s, lapack_complex_double *b, lapack_int *ldb, lapack_complex_double *x, lapack_int *ldx, double *rcond, double *ferr, double *berr, lapack_complex_double *work, double *rwork, lapack_int *info)
#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
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 LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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)
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