LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cpptrs_work()

lapack_int LAPACKE_cpptrs_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_float ap,
lapack_complex_float b,
lapack_int  ldb 
)

Definition at line 36 of file lapacke_cpptrs_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_cpptrs( &uplo, &n, &nrhs, ap, b, &ldb, &info );
44  if( info < 0 ) {
45  info = info - 1;
46  }
47  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48  lapack_int ldb_t = MAX(1,n);
49  lapack_complex_float* b_t = NULL;
50  lapack_complex_float* ap_t = NULL;
51  /* Check leading dimension(s) */
52  if( ldb < nrhs ) {
53  info = -7;
54  LAPACKE_xerbla( "LAPACKE_cpptrs_work", info );
55  return info;
56  }
57  /* Allocate memory for temporary array(s) */
58  b_t = (lapack_complex_float*)
60  ldb_t * MAX(1,nrhs) );
61  if( b_t == NULL ) {
63  goto exit_level_0;
64  }
65  ap_t = (lapack_complex_float*)
67  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
68  if( ap_t == NULL ) {
70  goto exit_level_1;
71  }
72  /* Transpose input matrices */
73  LAPACKE_cge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
74  LAPACKE_cpp_trans( matrix_layout, uplo, n, ap, ap_t );
75  /* Call LAPACK function and adjust info */
76  LAPACK_cpptrs( &uplo, &n, &nrhs, ap_t, b_t, &ldb_t, &info );
77  if( info < 0 ) {
78  info = info - 1;
79  }
80  /* Transpose output matrices */
81  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
82  /* Release memory and exit */
83  LAPACKE_free( ap_t );
84 exit_level_1:
85  LAPACKE_free( b_t );
86 exit_level_0:
87  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
88  LAPACKE_xerbla( "LAPACKE_cpptrs_work", info );
89  }
90  } else {
91  info = -1;
92  LAPACKE_xerbla( "LAPACKE_cpptrs_work", info );
93  }
94  return info;
95 }
void LAPACKE_cpp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_float *in, lapack_complex_float *out)
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)
void LAPACK_cpptrs(char *uplo, lapack_int *n, lapack_int *nrhs, const lapack_complex_float *ap, lapack_complex_float *b, lapack_int *ldb, lapack_int *info)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_float
Definition: lapacke.h:74
#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
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