LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zsprfs_work()

lapack_int LAPACKE_zsprfs_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_double ap,
const lapack_complex_double afp,
const lapack_int ipiv,
const lapack_complex_double b,
lapack_int  ldb,
lapack_complex_double x,
lapack_int  ldx,
double *  ferr,
double *  berr,
lapack_complex_double work,
double *  rwork 
)

Definition at line 36 of file lapacke_zsprfs_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_zsprfs( &uplo, &n, &nrhs, ap, afp, ipiv, b, &ldb, x, &ldx, ferr,
50  berr, work, rwork, &info );
51  if( info < 0 ) {
52  info = info - 1;
53  }
54  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55  lapack_int ldb_t = MAX(1,n);
56  lapack_int ldx_t = MAX(1,n);
57  lapack_complex_double* b_t = NULL;
58  lapack_complex_double* x_t = NULL;
59  lapack_complex_double* ap_t = NULL;
60  lapack_complex_double* afp_t = NULL;
61  /* Check leading dimension(s) */
62  if( ldb < nrhs ) {
63  info = -9;
64  LAPACKE_xerbla( "LAPACKE_zsprfs_work", info );
65  return info;
66  }
67  if( ldx < nrhs ) {
68  info = -11;
69  LAPACKE_xerbla( "LAPACKE_zsprfs_work", info );
70  return info;
71  }
72  /* Allocate memory for temporary array(s) */
73  b_t = (lapack_complex_double*)
75  ldb_t * MAX(1,nrhs) );
76  if( b_t == NULL ) {
78  goto exit_level_0;
79  }
80  x_t = (lapack_complex_double*)
82  ldx_t * MAX(1,nrhs) );
83  if( x_t == NULL ) {
85  goto exit_level_1;
86  }
87  ap_t = (lapack_complex_double*)
89  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
90  if( ap_t == NULL ) {
92  goto exit_level_2;
93  }
94  afp_t = (lapack_complex_double*)
96  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
97  if( afp_t == NULL ) {
99  goto exit_level_3;
100  }
101  /* Transpose input matrices */
102  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
103  LAPACKE_zge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
104  LAPACKE_zsp_trans( matrix_layout, uplo, n, ap, ap_t );
105  LAPACKE_zsp_trans( matrix_layout, uplo, n, afp, afp_t );
106  /* Call LAPACK function and adjust info */
107  LAPACK_zsprfs( &uplo, &n, &nrhs, ap_t, afp_t, ipiv, b_t, &ldb_t, x_t,
108  &ldx_t, ferr, berr, work, rwork, &info );
109  if( info < 0 ) {
110  info = info - 1;
111  }
112  /* Transpose output matrices */
113  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
114  /* Release memory and exit */
115  LAPACKE_free( afp_t );
116 exit_level_3:
117  LAPACKE_free( ap_t );
118 exit_level_2:
119  LAPACKE_free( x_t );
120 exit_level_1:
121  LAPACKE_free( b_t );
122 exit_level_0:
123  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
124  LAPACKE_xerbla( "LAPACKE_zsprfs_work", info );
125  }
126  } else {
127  info = -1;
128  LAPACKE_xerbla( "LAPACKE_zsprfs_work", info );
129  }
130  return info;
131 }
void LAPACK_zsprfs(char *uplo, lapack_int *n, lapack_int *nrhs, const lapack_complex_double *ap, const lapack_complex_double *afp, const lapack_int *ipiv, const lapack_complex_double *b, lapack_int *ldb, lapack_complex_double *x, lapack_int *ldx, double *ferr, double *berr, lapack_complex_double *work, double *rwork, lapack_int *info)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
void LAPACKE_zsp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_complex_double *out)
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
#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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