LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_chetrs2_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_float *  a,
lapack_int  lda,
const lapack_int *  ipiv,
lapack_complex_float *  b,
lapack_int  ldb,
lapack_complex_float *  work 
)

Definition at line 36 of file lapacke_chetrs2_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_chetrs2( &uplo, &n, &nrhs, a, &lda, ipiv, b, &ldb, work, &info );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int lda_t = MAX(1,n);
51  lapack_int ldb_t = MAX(1,n);
52  lapack_complex_float* a_t = NULL;
53  lapack_complex_float* b_t = NULL;
54  /* Check leading dimension(s) */
55  if( lda < n ) {
56  info = -6;
57  LAPACKE_xerbla( "LAPACKE_chetrs2_work", info );
58  return info;
59  }
60  if( ldb < nrhs ) {
61  info = -9;
62  LAPACKE_xerbla( "LAPACKE_chetrs2_work", info );
63  return info;
64  }
65  /* Allocate memory for temporary array(s) */
66  a_t = (lapack_complex_float*)
67  LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
68  if( a_t == NULL ) {
69  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
70  goto exit_level_0;
71  }
72  b_t = (lapack_complex_float*)
73  LAPACKE_malloc( sizeof(lapack_complex_float) *
74  ldb_t * MAX(1,nrhs) );
75  if( b_t == NULL ) {
76  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
77  goto exit_level_1;
78  }
79  /* Transpose input matrices */
80  LAPACKE_che_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
81  LAPACKE_cge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
82  /* Call LAPACK function and adjust info */
83  LAPACK_chetrs2( &uplo, &n, &nrhs, a_t, &lda_t, ipiv, b_t, &ldb_t, work,
84  &info );
85  if( info < 0 ) {
86  info = info - 1;
87  }
88  /* Transpose output matrices */
89  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
90  /* Release memory and exit */
91  LAPACKE_free( b_t );
92 exit_level_1:
93  LAPACKE_free( a_t );
94 exit_level_0:
95  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
96  LAPACKE_xerbla( "LAPACKE_chetrs2_work", info );
97  }
98  } else {
99  info = -1;
100  LAPACKE_xerbla( "LAPACKE_chetrs2_work", info );
101  }
102  return info;
103 }
LAPACKE_che_trans
void LAPACKE_che_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
Definition: lapacke_che_trans.c:40
LAPACKE_cge_trans
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
Definition: lapacke_cge_trans.c:40
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_complex_float
#define lapack_complex_float
Definition: lapacke.h:74
LAPACK_chetrs2
void LAPACK_chetrs2(char *uplo, lapack_int *n, lapack_int *nrhs, const lapack_complex_float *a, lapack_int *lda, const lapack_int *ipiv, lapack_complex_float *b, lapack_int *ldb, lapack_complex_float *work, lapack_int *info)
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:47
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:113
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:37
lapack_int
#define lapack_int
Definition: lapacke.h:47
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123

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