LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zsysvx()

lapack_int LAPACKE_zsysvx ( 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 
)

Definition at line 36 of file lapacke_zsysvx.c.

43 {
44  lapack_int info = 0;
45  lapack_int lwork = -1;
46  double* rwork = NULL;
47  lapack_complex_double* work = NULL;
48  lapack_complex_double work_query;
49  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50  LAPACKE_xerbla( "LAPACKE_zsysvx", -1 );
51  return -1;
52  }
53 #ifndef LAPACK_DISABLE_NAN_CHECK
54  /* Optionally check input matrices for NaNs */
55  if( LAPACKE_zsy_nancheck( matrix_layout, uplo, n, a, lda ) ) {
56  return -6;
57  }
58  if( LAPACKE_lsame( fact, 'f' ) ) {
59  if( LAPACKE_zsy_nancheck( matrix_layout, uplo, n, af, ldaf ) ) {
60  return -8;
61  }
62  }
63  if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
64  return -11;
65  }
66 #endif
67  /* Allocate memory for working array(s) */
68  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
69  if( rwork == NULL ) {
71  goto exit_level_0;
72  }
73  /* Query optimal working array(s) size */
74  info = LAPACKE_zsysvx_work( matrix_layout, fact, uplo, n, nrhs, a, lda, af,
75  ldaf, ipiv, b, ldb, x, ldx, rcond, ferr, berr,
76  &work_query, lwork, rwork );
77  if( info != 0 ) {
78  goto exit_level_1;
79  }
80  lwork = LAPACK_Z2INT( work_query );
81  /* Allocate memory for work arrays */
82  work = (lapack_complex_double*)
83  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
84  if( work == NULL ) {
86  goto exit_level_1;
87  }
88  /* Call middle-level interface */
89  info = LAPACKE_zsysvx_work( matrix_layout, fact, uplo, n, nrhs, a, lda, af,
90  ldaf, ipiv, b, ldb, x, ldx, rcond, ferr, berr,
91  work, lwork, rwork );
92  /* Release memory and exit */
93  LAPACKE_free( work );
94 exit_level_1:
95  LAPACKE_free( rwork );
96 exit_level_0:
97  if( info == LAPACK_WORK_MEMORY_ERROR ) {
98  LAPACKE_xerbla( "LAPACKE_zsysvx", info );
99  }
100  return info;
101 }
#define LAPACK_Z2INT(x)
Definition: lapacke.h:117
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
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)
#define lapack_int
Definition: lapacke.h:47
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
lapack_logical LAPACKE_zsy_nancheck(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *a, lapack_int lda)
Here is the call graph for this function: