LAPACK  3.9.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cpbsvx_work()

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

Definition at line 35 of file lapacke_cpbsvx_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_cpbsvx( &fact, &uplo, &n, &kd, &nrhs, ab, &ldab, afb, &ldafb,
49  equed, s, b, &ldb, x, &ldx, rcond, ferr, berr, work,
50  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_float* ab_t = NULL;
60  lapack_complex_float* afb_t = NULL;
61  lapack_complex_float* b_t = NULL;
62  lapack_complex_float* x_t = NULL;
63  /* Check leading dimension(s) */
64  if( ldab < n ) {
65  info = -8;
66  LAPACKE_xerbla( "LAPACKE_cpbsvx_work", info );
67  return info;
68  }
69  if( ldafb < n ) {
70  info = -10;
71  LAPACKE_xerbla( "LAPACKE_cpbsvx_work", info );
72  return info;
73  }
74  if( ldb < nrhs ) {
75  info = -14;
76  LAPACKE_xerbla( "LAPACKE_cpbsvx_work", info );
77  return info;
78  }
79  if( ldx < nrhs ) {
80  info = -16;
81  LAPACKE_xerbla( "LAPACKE_cpbsvx_work", info );
82  return info;
83  }
84  /* Allocate memory for temporary array(s) */
85  ab_t = (lapack_complex_float*)
86  LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
87  if( ab_t == NULL ) {
88  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
89  goto exit_level_0;
90  }
91  afb_t = (lapack_complex_float*)
92  LAPACKE_malloc( sizeof(lapack_complex_float) * ldafb_t * MAX(1,n) );
93  if( afb_t == NULL ) {
94  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
95  goto exit_level_1;
96  }
97  b_t = (lapack_complex_float*)
98  LAPACKE_malloc( sizeof(lapack_complex_float) *
99  ldb_t * MAX(1,nrhs) );
100  if( b_t == NULL ) {
101  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
102  goto exit_level_2;
103  }
104  x_t = (lapack_complex_float*)
105  LAPACKE_malloc( sizeof(lapack_complex_float) *
106  ldx_t * MAX(1,nrhs) );
107  if( x_t == NULL ) {
108  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
109  goto exit_level_3;
110  }
111  /* Transpose input matrices */
112  LAPACKE_cpb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
113  if( LAPACKE_lsame( fact, 'f' ) ) {
114  LAPACKE_cpb_trans( matrix_layout, uplo, n, kd, afb, ldafb, afb_t,
115  ldafb_t );
116  }
117  LAPACKE_cge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
118  /* Call LAPACK function and adjust info */
119  LAPACK_cpbsvx( &fact, &uplo, &n, &kd, &nrhs, ab_t, &ldab_t, afb_t,
120  &ldafb_t, equed, s, b_t, &ldb_t, x_t, &ldx_t, rcond,
121  ferr, berr, work, rwork, &info );
122  if( info < 0 ) {
123  info = info - 1;
124  }
125  /* Transpose output matrices */
126  if( LAPACKE_lsame( fact, 'e' ) && LAPACKE_lsame( *equed, 'y' ) ) {
127  LAPACKE_cpb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
128  ldab );
129  }
130  if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
131  LAPACKE_cpb_trans( LAPACK_COL_MAJOR, uplo, n, kd, afb_t, ldafb_t,
132  afb, ldafb );
133  }
134  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
135  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
136  /* Release memory and exit */
137  LAPACKE_free( x_t );
138 exit_level_3:
139  LAPACKE_free( b_t );
140 exit_level_2:
141  LAPACKE_free( afb_t );
142 exit_level_1:
143  LAPACKE_free( ab_t );
144 exit_level_0:
145  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
146  LAPACKE_xerbla( "LAPACKE_cpbsvx_work", info );
147  }
148  } else {
149  info = -1;
150  LAPACKE_xerbla( "LAPACKE_cpbsvx_work", info );
151  }
152  return info;
153 }
LAPACK_cpbsvx
void LAPACK_cpbsvx(char const *fact, char const *uplo, lapack_int const *n, lapack_int const *kd, lapack_int const *nrhs, lapack_complex_float *AB, lapack_int const *ldab, lapack_complex_float *AFB, lapack_int const *ldafb, char *equed, float *S, lapack_complex_float *B, lapack_int const *ldb, lapack_complex_float *X, lapack_int const *ldx, float *rcond, float *ferr, float *berr, lapack_complex_float *work, float *rwork, lapack_int *info)
lapack_int
#define lapack_int
Definition: lapack.h:83
lapack_complex_float
#define lapack_complex_float
Definition: lapack.h:45
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
LAPACKE_cpb_trans
void LAPACKE_cpb_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_cpb_trans.c:39
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
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:39
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