LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sposv_work()

lapack_int LAPACKE_sposv_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb 
)

Definition at line 35 of file lapacke_sposv_work.c.

38 {
39  lapack_int info = 0;
40  if( matrix_layout == LAPACK_COL_MAJOR ) {
41  /* Call LAPACK function and adjust info */
42  LAPACK_sposv( &uplo, &n, &nrhs, a, &lda, b, &ldb, &info );
43  if( info < 0 ) {
44  info = info - 1;
45  }
46  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
47  lapack_int lda_t = MAX(1,n);
48  lapack_int ldb_t = MAX(1,n);
49  float* a_t = NULL;
50  float* b_t = NULL;
51  /* Check leading dimension(s) */
52  if( lda < n ) {
53  info = -6;
54  LAPACKE_xerbla( "LAPACKE_sposv_work", info );
55  return info;
56  }
57  if( ldb < nrhs ) {
58  info = -8;
59  LAPACKE_xerbla( "LAPACKE_sposv_work", info );
60  return info;
61  }
62  /* Allocate memory for temporary array(s) */
63  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
64  if( a_t == NULL ) {
66  goto exit_level_0;
67  }
68  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
69  if( b_t == NULL ) {
71  goto exit_level_1;
72  }
73  /* Transpose input matrices */
74  LAPACKE_spo_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
75  LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
76  /* Call LAPACK function and adjust info */
77  LAPACK_sposv( &uplo, &n, &nrhs, a_t, &lda_t, b_t, &ldb_t, &info );
78  if( info < 0 ) {
79  info = info - 1;
80  }
81  /* Transpose output matrices */
82  LAPACKE_spo_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
83  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
84  /* Release memory and exit */
85  LAPACKE_free( b_t );
86 exit_level_1:
87  LAPACKE_free( a_t );
88 exit_level_0:
89  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
90  LAPACKE_xerbla( "LAPACKE_sposv_work", info );
91  }
92  } else {
93  info = -1;
94  LAPACKE_xerbla( "LAPACKE_sposv_work", info );
95  }
96  return info;
97 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_sposv(...)
Definition: lapack.h:13014
#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_spo_trans(int matrix_layout, char uplo, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
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:46
Here is the call graph for this function:
Here is the caller graph for this function: