LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_spbsvx_work()

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

Definition at line 35 of file lapacke_spbsvx_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_spbsvx( &fact, &uplo, &n, &kd, &nrhs, ab, &ldab, afb, &ldafb,
47  equed, s, b, &ldb, x, &ldx, rcond, ferr, berr, work,
48  iwork, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lapack_int ldab_t = MAX(1,kd+1);
54  lapack_int ldafb_t = MAX(1,kd+1);
55  lapack_int ldb_t = MAX(1,n);
56  lapack_int ldx_t = MAX(1,n);
57  float* ab_t = NULL;
58  float* afb_t = NULL;
59  float* b_t = NULL;
60  float* x_t = NULL;
61  /* Check leading dimension(s) */
62  if( ldab < n ) {
63  info = -8;
64  LAPACKE_xerbla( "LAPACKE_spbsvx_work", info );
65  return info;
66  }
67  if( ldafb < n ) {
68  info = -10;
69  LAPACKE_xerbla( "LAPACKE_spbsvx_work", info );
70  return info;
71  }
72  if( ldb < nrhs ) {
73  info = -14;
74  LAPACKE_xerbla( "LAPACKE_spbsvx_work", info );
75  return info;
76  }
77  if( ldx < nrhs ) {
78  info = -16;
79  LAPACKE_xerbla( "LAPACKE_spbsvx_work", info );
80  return info;
81  }
82  /* Allocate memory for temporary array(s) */
83  ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
84  if( ab_t == NULL ) {
86  goto exit_level_0;
87  }
88  afb_t = (float*)LAPACKE_malloc( sizeof(float) * ldafb_t * MAX(1,n) );
89  if( afb_t == NULL ) {
91  goto exit_level_1;
92  }
93  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
94  if( b_t == NULL ) {
96  goto exit_level_2;
97  }
98  x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
99  if( x_t == NULL ) {
101  goto exit_level_3;
102  }
103  /* Transpose input matrices */
104  LAPACKE_spb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
105  if( LAPACKE_lsame( fact, 'f' ) ) {
106  LAPACKE_spb_trans( matrix_layout, uplo, n, kd, afb, ldafb, afb_t,
107  ldafb_t );
108  }
109  LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
110  /* Call LAPACK function and adjust info */
111  LAPACK_spbsvx( &fact, &uplo, &n, &kd, &nrhs, ab_t, &ldab_t, afb_t,
112  &ldafb_t, equed, s, b_t, &ldb_t, x_t, &ldx_t, rcond,
113  ferr, berr, work, iwork, &info );
114  if( info < 0 ) {
115  info = info - 1;
116  }
117  /* Transpose output matrices */
118  if( LAPACKE_lsame( fact, 'e' ) && LAPACKE_lsame( *equed, 'y' ) ) {
119  LAPACKE_spb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
120  ldab );
121  }
122  if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
123  LAPACKE_spb_trans( LAPACK_COL_MAJOR, uplo, n, kd, afb_t, ldafb_t,
124  afb, ldafb );
125  }
126  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
127  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
128  /* Release memory and exit */
129  LAPACKE_free( x_t );
130 exit_level_3:
131  LAPACKE_free( b_t );
132 exit_level_2:
133  LAPACKE_free( afb_t );
134 exit_level_1:
135  LAPACKE_free( ab_t );
136 exit_level_0:
137  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
138  LAPACKE_xerbla( "LAPACKE_spbsvx_work", info );
139  }
140  } else {
141  info = -1;
142  LAPACKE_xerbla( "LAPACKE_spbsvx_work", info );
143  }
144  return info;
145 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_spbsvx(...)
Definition: lapack.h:12257
#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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_spb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const float *in, lapack_int ldin, float *out, lapack_int ldout)
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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