LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ctrtrs_work()

lapack_int LAPACKE_ctrtrs_work ( int  matrix_layout,
char  uplo,
char  trans,
char  diag,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_float a,
lapack_int  lda,
lapack_complex_float b,
lapack_int  ldb 
)

Definition at line 36 of file lapacke_ctrtrs_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_ctrtrs( &uplo, &trans, &diag, &n, &nrhs, a, &lda, b, &ldb,
45  &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 = -8;
57  LAPACKE_xerbla( "LAPACKE_ctrtrs_work", info );
58  return info;
59  }
60  if( ldb < nrhs ) {
61  info = -10;
62  LAPACKE_xerbla( "LAPACKE_ctrtrs_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 ) {
70  goto exit_level_0;
71  }
72  b_t = (lapack_complex_float*)
74  ldb_t * MAX(1,nrhs) );
75  if( b_t == NULL ) {
77  goto exit_level_1;
78  }
79  /* Transpose input matrices */
80  LAPACKE_ctr_trans( matrix_layout, uplo, diag, 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_ctrtrs( &uplo, &trans, &diag, &n, &nrhs, a_t, &lda_t, b_t,
84  &ldb_t, &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_ctrtrs_work", info );
97  }
98  } else {
99  info = -1;
100  LAPACKE_xerbla( "LAPACKE_ctrtrs_work", info );
101  }
102  return info;
103 }
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)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_float
Definition: lapacke.h:74
void LAPACKE_ctr_trans(int matrix_layout, char uplo, char diag, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACK_ctrtrs(char *uplo, char *trans, char *diag, lapack_int *n, lapack_int *nrhs, const lapack_complex_float *a, lapack_int *lda, lapack_complex_float *b, lapack_int *ldb, lapack_int *info)
#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
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