LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_stprfs_work()

lapack_int LAPACKE_stprfs_work ( int  matrix_layout,
char  uplo,
char  trans,
char  diag,
lapack_int  n,
lapack_int  nrhs,
const float *  ap,
const float *  b,
lapack_int  ldb,
const float *  x,
lapack_int  ldx,
float *  ferr,
float *  berr,
float *  work,
lapack_int iwork 
)

Definition at line 35 of file lapacke_stprfs_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_stprfs( &uplo, &trans, &diag, &n, &nrhs, ap, b, &ldb, x, &ldx,
45  ferr, berr, work, iwork, &info );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int ldb_t = MAX(1,n);
51  lapack_int ldx_t = MAX(1,n);
52  float* b_t = NULL;
53  float* x_t = NULL;
54  float* ap_t = NULL;
55  /* Check leading dimension(s) */
56  if( ldb < nrhs ) {
57  info = -9;
58  LAPACKE_xerbla( "LAPACKE_stprfs_work", info );
59  return info;
60  }
61  if( ldx < nrhs ) {
62  info = -11;
63  LAPACKE_xerbla( "LAPACKE_stprfs_work", info );
64  return info;
65  }
66  /* Allocate memory for temporary array(s) */
67  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
68  if( b_t == NULL ) {
70  goto exit_level_0;
71  }
72  x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
73  if( x_t == NULL ) {
75  goto exit_level_1;
76  }
77  ap_t = (float*)
78  LAPACKE_malloc( sizeof(float) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
79  if( ap_t == NULL ) {
81  goto exit_level_2;
82  }
83  /* Transpose input matrices */
84  LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
85  LAPACKE_sge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
86  LAPACKE_stp_trans( matrix_layout, uplo, diag, n, ap, ap_t );
87  /* Call LAPACK function and adjust info */
88  LAPACK_stprfs( &uplo, &trans, &diag, &n, &nrhs, ap_t, b_t, &ldb_t, x_t,
89  &ldx_t, ferr, berr, work, iwork, &info );
90  if( info < 0 ) {
91  info = info - 1;
92  }
93  /* Release memory and exit */
94  LAPACKE_free( ap_t );
95 exit_level_2:
96  LAPACKE_free( x_t );
97 exit_level_1:
98  LAPACKE_free( b_t );
99 exit_level_0:
100  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
101  LAPACKE_xerbla( "LAPACKE_stprfs_work", info );
102  }
103  } else {
104  info = -1;
105  LAPACKE_xerbla( "LAPACKE_stprfs_work", info );
106  }
107  return info;
108 }
#define LAPACK_stprfs(...)
Definition: lapack.h:21036
#define lapack_int
Definition: lapack.h:83
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
void LAPACKE_stp_trans(int matrix_layout, char uplo, char diag, lapack_int n, const float *in, float *out)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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