LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zsysvx_work()

lapack_int LAPACKE_zsysvx_work ( int  matrix_layout,
char  fact,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_double a,
lapack_int  lda,
lapack_complex_double af,
lapack_int  ldaf,
lapack_int ipiv,
const lapack_complex_double b,
lapack_int  ldb,
lapack_complex_double x,
lapack_int  ldx,
double *  rcond,
double *  ferr,
double *  berr,
lapack_complex_double work,
lapack_int  lwork,
double *  rwork 
)

Definition at line 35 of file lapacke_zsysvx_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_zsysvx( &fact, &uplo, &n, &nrhs, a, &lda, af, &ldaf, ipiv, b,
50  &ldb, x, &ldx, rcond, ferr, berr, work, &lwork, rwork,
51  &info );
52  if( info < 0 ) {
53  info = info - 1;
54  }
55  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56  lapack_int lda_t = MAX(1,n);
57  lapack_int ldaf_t = MAX(1,n);
58  lapack_int ldb_t = MAX(1,n);
59  lapack_int ldx_t = MAX(1,n);
60  lapack_complex_double* a_t = NULL;
61  lapack_complex_double* af_t = NULL;
62  lapack_complex_double* b_t = NULL;
63  lapack_complex_double* x_t = NULL;
64  /* Check leading dimension(s) */
65  if( lda < n ) {
66  info = -7;
67  LAPACKE_xerbla( "LAPACKE_zsysvx_work", info );
68  return info;
69  }
70  if( ldaf < n ) {
71  info = -9;
72  LAPACKE_xerbla( "LAPACKE_zsysvx_work", info );
73  return info;
74  }
75  if( ldb < nrhs ) {
76  info = -12;
77  LAPACKE_xerbla( "LAPACKE_zsysvx_work", info );
78  return info;
79  }
80  if( ldx < nrhs ) {
81  info = -14;
82  LAPACKE_xerbla( "LAPACKE_zsysvx_work", info );
83  return info;
84  }
85  /* Query optimal working array(s) size if requested */
86  if( lwork == -1 ) {
87  LAPACK_zsysvx( &fact, &uplo, &n, &nrhs, a, &lda_t, af, &ldaf_t,
88  ipiv, b, &ldb_t, x, &ldx_t, rcond, ferr, berr, work,
89  &lwork, rwork, &info );
90  return (info < 0) ? (info - 1) : info;
91  }
92  /* Allocate memory for temporary array(s) */
93  a_t = (lapack_complex_double*)
94  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
95  if( a_t == NULL ) {
97  goto exit_level_0;
98  }
99  af_t = (lapack_complex_double*)
100  LAPACKE_malloc( sizeof(lapack_complex_double) * ldaf_t * MAX(1,n) );
101  if( af_t == NULL ) {
103  goto exit_level_1;
104  }
105  b_t = (lapack_complex_double*)
107  ldb_t * MAX(1,nrhs) );
108  if( b_t == NULL ) {
110  goto exit_level_2;
111  }
112  x_t = (lapack_complex_double*)
114  ldx_t * MAX(1,nrhs) );
115  if( x_t == NULL ) {
117  goto exit_level_3;
118  }
119  /* Transpose input matrices */
120  LAPACKE_zsy_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
121  if( LAPACKE_lsame( fact, 'f' ) ) {
122  LAPACKE_zsy_trans( matrix_layout, uplo, n, af, ldaf, af_t, ldaf_t );
123  }
124  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
125  /* Call LAPACK function and adjust info */
126  LAPACK_zsysvx( &fact, &uplo, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
127  ipiv, b_t, &ldb_t, x_t, &ldx_t, rcond, ferr, berr, work,
128  &lwork, rwork, &info );
129  if( info < 0 ) {
130  info = info - 1;
131  }
132  /* Transpose output matrices */
133  if( LAPACKE_lsame( fact, 'n' ) ) {
134  LAPACKE_zsy_trans( LAPACK_COL_MAJOR, uplo, n, af_t, ldaf_t, af,
135  ldaf );
136  }
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( af_t );
144 exit_level_1:
145  LAPACKE_free( a_t );
146 exit_level_0:
147  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
148  LAPACKE_xerbla( "LAPACKE_zsysvx_work", info );
149  }
150  } else {
151  info = -1;
152  LAPACKE_xerbla( "LAPACKE_zsysvx_work", info );
153  }
154  return info;
155 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_zsysvx(...)
Definition: lapack.h:18230
#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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_zsy_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
Here is the call graph for this function:
Here is the caller graph for this function: