LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgerfs_work()

lapack_int LAPACKE_zgerfs_work ( int  matrix_layout,
char  trans,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_double a,
lapack_int  lda,
const lapack_complex_double af,
lapack_int  ldaf,
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_zgerfs_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_zgerfs( &trans, &n, &nrhs, a, &lda, af, &ldaf, ipiv, b, &ldb, x,
49  &ldx, ferr, berr, work, rwork, &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int lda_t = MAX(1,n);
55  lapack_int ldaf_t = MAX(1,n);
56  lapack_int ldb_t = MAX(1,n);
57  lapack_int ldx_t = MAX(1,n);
58  lapack_complex_double* a_t = NULL;
59  lapack_complex_double* af_t = NULL;
60  lapack_complex_double* b_t = NULL;
61  lapack_complex_double* x_t = NULL;
62  /* Check leading dimension(s) */
63  if( lda < n ) {
64  info = -6;
65  LAPACKE_xerbla( "LAPACKE_zgerfs_work", info );
66  return info;
67  }
68  if( ldaf < n ) {
69  info = -8;
70  LAPACKE_xerbla( "LAPACKE_zgerfs_work", info );
71  return info;
72  }
73  if( ldb < nrhs ) {
74  info = -11;
75  LAPACKE_xerbla( "LAPACKE_zgerfs_work", info );
76  return info;
77  }
78  if( ldx < nrhs ) {
79  info = -13;
80  LAPACKE_xerbla( "LAPACKE_zgerfs_work", info );
81  return info;
82  }
83  /* Allocate memory for temporary array(s) */
84  a_t = (lapack_complex_double*)
85  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
86  if( a_t == NULL ) {
88  goto exit_level_0;
89  }
90  af_t = (lapack_complex_double*)
91  LAPACKE_malloc( sizeof(lapack_complex_double) * ldaf_t * MAX(1,n) );
92  if( af_t == NULL ) {
94  goto exit_level_1;
95  }
96  b_t = (lapack_complex_double*)
98  ldb_t * MAX(1,nrhs) );
99  if( b_t == NULL ) {
101  goto exit_level_2;
102  }
103  x_t = (lapack_complex_double*)
105  ldx_t * MAX(1,nrhs) );
106  if( x_t == NULL ) {
108  goto exit_level_3;
109  }
110  /* Transpose input matrices */
111  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
112  LAPACKE_zge_trans( matrix_layout, n, n, af, ldaf, af_t, ldaf_t );
113  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
114  LAPACKE_zge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
115  /* Call LAPACK function and adjust info */
116  LAPACK_zgerfs( &trans, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t, ipiv, b_t,
117  &ldb_t, x_t, &ldx_t, ferr, berr, work, rwork, &info );
118  if( info < 0 ) {
119  info = info - 1;
120  }
121  /* Transpose output matrices */
122  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
123  /* Release memory and exit */
124  LAPACKE_free( x_t );
125 exit_level_3:
126  LAPACKE_free( b_t );
127 exit_level_2:
128  LAPACKE_free( af_t );
129 exit_level_1:
130  LAPACKE_free( a_t );
131 exit_level_0:
132  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
133  LAPACKE_xerbla( "LAPACKE_zgerfs_work", info );
134  }
135  } else {
136  info = -1;
137  LAPACKE_xerbla( "LAPACKE_zgerfs_work", info );
138  }
139  return info;
140 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#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 LAPACK_zgerfs(char *trans, lapack_int *n, lapack_int *nrhs, const lapack_complex_double *a, lapack_int *lda, const lapack_complex_double *af, lapack_int *ldaf, 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)
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)
Here is the call graph for this function:
Here is the caller graph for this function: