LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_stptrs_work()

lapack_int LAPACKE_stptrs_work ( int  matrix_layout,
char  uplo,
char  trans,
char  diag,
lapack_int  n,
lapack_int  nrhs,
const float *  ap,
float *  b,
lapack_int  ldb 
)

Definition at line 36 of file lapacke_stptrs_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_stptrs( &uplo, &trans, &diag, &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  float* b_t = NULL;
50  float* ap_t = NULL;
51  /* Check leading dimension(s) */
52  if( ldb < nrhs ) {
53  info = -9;
54  LAPACKE_xerbla( "LAPACKE_stptrs_work", info );
55  return info;
56  }
57  /* Allocate memory for temporary array(s) */
58  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
59  if( b_t == NULL ) {
61  goto exit_level_0;
62  }
63  ap_t = (float*)
64  LAPACKE_malloc( sizeof(float) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
65  if( ap_t == NULL ) {
67  goto exit_level_1;
68  }
69  /* Transpose input matrices */
70  LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
71  LAPACKE_stp_trans( matrix_layout, uplo, diag, n, ap, ap_t );
72  /* Call LAPACK function and adjust info */
73  LAPACK_stptrs( &uplo, &trans, &diag, &n, &nrhs, ap_t, b_t, &ldb_t,
74  &info );
75  if( info < 0 ) {
76  info = info - 1;
77  }
78  /* Transpose output matrices */
79  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
80  /* Release memory and exit */
81  LAPACKE_free( ap_t );
82 exit_level_1:
83  LAPACKE_free( b_t );
84 exit_level_0:
85  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
86  LAPACKE_xerbla( "LAPACKE_stptrs_work", info );
87  }
88  } else {
89  info = -1;
90  LAPACKE_xerbla( "LAPACKE_stptrs_work", info );
91  }
92  return info;
93 }
void LAPACKE_stp_trans(int matrix_layout, char uplo, char diag, lapack_int n, const float *in, float *out)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_stptrs(char *uplo, char *trans, char *diag, lapack_int *n, lapack_int *nrhs, const float *ap, float *b, lapack_int *ldb, 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)
#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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