LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgesvx()

lapack_int LAPACKE_zgesvx ( int  matrix_layout,
char  fact,
char  trans,
lapack_int  n,
lapack_int  nrhs,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double af,
lapack_int  ldaf,
lapack_int ipiv,
char *  equed,
double *  r,
double *  c,
lapack_complex_double b,
lapack_int  ldb,
lapack_complex_double x,
lapack_int  ldx,
double *  rcond,
double *  ferr,
double *  berr,
double *  rpivot 
)

Definition at line 36 of file lapacke_zgesvx.c.

45 {
46  lapack_int info = 0;
47  double* rwork = NULL;
48  lapack_complex_double* work = NULL;
49  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50  LAPACKE_xerbla( "LAPACKE_zgesvx", -1 );
51  return -1;
52  }
53 #ifndef LAPACK_DISABLE_NAN_CHECK
54  /* Optionally check input matrices for NaNs */
55  if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
56  return -6;
57  }
58  if( LAPACKE_lsame( fact, 'f' ) ) {
59  if( LAPACKE_zge_nancheck( matrix_layout, n, n, af, ldaf ) ) {
60  return -8;
61  }
62  }
63  if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
64  return -14;
65  }
66  if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
67  LAPACKE_lsame( *equed, 'c' ) ) ) {
68  if( LAPACKE_d_nancheck( n, c, 1 ) ) {
69  return -13;
70  }
71  }
72  if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
73  LAPACKE_lsame( *equed, 'r' ) ) ) {
74  if( LAPACKE_d_nancheck( n, r, 1 ) ) {
75  return -12;
76  }
77  }
78 #endif
79  /* Allocate memory for working array(s) */
80  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
81  if( rwork == NULL ) {
83  goto exit_level_0;
84  }
85  work = (lapack_complex_double*)
86  LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,2*n) );
87  if( work == NULL ) {
89  goto exit_level_1;
90  }
91  /* Call middle-level interface */
92  info = LAPACKE_zgesvx_work( matrix_layout, fact, trans, n, nrhs, a, lda, af,
93  ldaf, ipiv, equed, r, c, b, ldb, x, ldx, rcond,
94  ferr, berr, work, rwork );
95  /* Backup significant data from working array(s) */
96  *rpivot = rwork[0];
97  /* Release memory and exit */
98  LAPACKE_free( work );
99 exit_level_1:
100  LAPACKE_free( rwork );
101 exit_level_0:
102  if( info == LAPACK_WORK_MEMORY_ERROR ) {
103  LAPACKE_xerbla( "LAPACKE_zgesvx", info );
104  }
105  return info;
106 }
#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_int LAPACKE_zgesvx_work(int matrix_layout, char fact, char trans, lapack_int n, lapack_int nrhs, lapack_complex_double *a, lapack_int lda, lapack_complex_double *af, lapack_int ldaf, lapack_int *ipiv, char *equed, double *r, double *c, lapack_complex_double *b, lapack_int ldb, lapack_complex_double *x, lapack_int ldx, double *rcond, double *ferr, double *berr, lapack_complex_double *work, double *rwork)
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
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)
#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)
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