LAPACK  3.9.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgbsvx_work()

lapack_int LAPACKE_cgbsvx_work ( int  matrix_layout,
char  fact,
char  trans,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
lapack_int  nrhs,
lapack_complex_float *  ab,
lapack_int  ldab,
lapack_complex_float *  afb,
lapack_int  ldafb,
lapack_int *  ipiv,
char *  equed,
float *  r,
float *  c,
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_cgbsvx_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_cgbsvx( &fact, &trans, &n, &kl, &ku, &nrhs, ab, &ldab, afb,
50  &ldafb, ipiv, equed, r, c, b, &ldb, x, &ldx, rcond, ferr,
51  berr, work, 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,kl+ku+1);
57  lapack_int ldafb_t = MAX(1,2*kl+ku+1);
58  lapack_int ldb_t = MAX(1,n);
59  lapack_int ldx_t = MAX(1,n);
60  lapack_complex_float* ab_t = NULL;
61  lapack_complex_float* afb_t = NULL;
62  lapack_complex_float* b_t = NULL;
63  lapack_complex_float* x_t = NULL;
64  /* Check leading dimension(s) */
65  if( ldab < n ) {
66  info = -9;
67  LAPACKE_xerbla( "LAPACKE_cgbsvx_work", info );
68  return info;
69  }
70  if( ldafb < n ) {
71  info = -11;
72  LAPACKE_xerbla( "LAPACKE_cgbsvx_work", info );
73  return info;
74  }
75  if( ldb < nrhs ) {
76  info = -17;
77  LAPACKE_xerbla( "LAPACKE_cgbsvx_work", info );
78  return info;
79  }
80  if( ldx < nrhs ) {
81  info = -19;
82  LAPACKE_xerbla( "LAPACKE_cgbsvx_work", info );
83  return info;
84  }
85  /* Allocate memory for temporary array(s) */
86  ab_t = (lapack_complex_float*)
87  LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
88  if( ab_t == NULL ) {
89  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
90  goto exit_level_0;
91  }
92  afb_t = (lapack_complex_float*)
93  LAPACKE_malloc( sizeof(lapack_complex_float) * ldafb_t * MAX(1,n) );
94  if( afb_t == NULL ) {
95  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
96  goto exit_level_1;
97  }
98  b_t = (lapack_complex_float*)
99  LAPACKE_malloc( sizeof(lapack_complex_float) *
100  ldb_t * MAX(1,nrhs) );
101  if( b_t == NULL ) {
102  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
103  goto exit_level_2;
104  }
105  x_t = (lapack_complex_float*)
106  LAPACKE_malloc( sizeof(lapack_complex_float) *
107  ldx_t * MAX(1,nrhs) );
108  if( x_t == NULL ) {
109  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
110  goto exit_level_3;
111  }
112  /* Transpose input matrices */
113  LAPACKE_cgb_trans( matrix_layout, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
114  if( LAPACKE_lsame( fact, 'f' ) ) {
115  LAPACKE_cgb_trans( matrix_layout, n, n, kl, kl+ku, afb, ldafb, afb_t,
116  ldafb_t );
117  }
118  LAPACKE_cge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
119  /* Call LAPACK function and adjust info */
120  LAPACK_cgbsvx( &fact, &trans, &n, &kl, &ku, &nrhs, ab_t, &ldab_t, afb_t,
121  &ldafb_t, ipiv, equed, r, c, b_t, &ldb_t, x_t, &ldx_t,
122  rcond, ferr, berr, work, rwork, &info );
123  if( info < 0 ) {
124  info = info - 1;
125  }
126  /* Transpose output matrices */
127  if( LAPACKE_lsame( fact, 'e' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
128  LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
129  LAPACKE_cgb_trans( LAPACK_COL_MAJOR, n, n, kl, ku, ab_t, ldab_t, ab,
130  ldab );
131  }
132  if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
133  LAPACKE_cgb_trans( LAPACK_COL_MAJOR, n, n, kl, kl+ku, afb_t,
134  ldafb_t, afb, ldafb );
135  }
136  if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
137  LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
138  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
139  }
140  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
141  /* Release memory and exit */
142  LAPACKE_free( x_t );
143 exit_level_3:
144  LAPACKE_free( b_t );
145 exit_level_2:
146  LAPACKE_free( afb_t );
147 exit_level_1:
148  LAPACKE_free( ab_t );
149 exit_level_0:
150  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
151  LAPACKE_xerbla( "LAPACKE_cgbsvx_work", info );
152  }
153  } else {
154  info = -1;
155  LAPACKE_xerbla( "LAPACKE_cgbsvx_work", info );
156  }
157  return info;
158 }
LAPACK_cgbsvx
void LAPACK_cgbsvx(char const *fact, char const *trans, lapack_int const *n, lapack_int const *kl, lapack_int const *ku, lapack_int const *nrhs, lapack_complex_float *AB, lapack_int const *ldab, lapack_complex_float *AFB, lapack_int const *ldafb, lapack_int *ipiv, char *equed, float *R, float *C, 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_cgb_trans
void LAPACKE_cgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
Definition: lapacke_cgb_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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