LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ssytrs_aa_2stage_work()

lapack_int LAPACKE_ssytrs_aa_2stage_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
float *  a,
lapack_int  lda,
float *  tb,
lapack_int  ltb,
lapack_int ipiv,
lapack_int ipiv2,
float *  b,
lapack_int  ldb 
)

Definition at line 36 of file lapacke_ssytrs_aa_2stage_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_ssytrs_aa_2stage( &uplo, &n, &nrhs, a, &lda, tb,
45  &ltb, ipiv, ipiv2, b, &ldb, &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  float* a_t = NULL;
53  float* tb_t = NULL;
54  float* b_t = NULL;
55  /* Check leading dimension(s) */
56  if( lda < n ) {
57  info = -6;
58  LAPACKE_xerbla( "LAPACKE_ssytrs_aa_2stage_work", info );
59  return info;
60  }
61  if( ltb < 4*n ) {
62  info = -8;
63  LAPACKE_xerbla( "LAPACKE_ssytrs_aa_2stage_work", info );
64  return info;
65  }
66  if( ldb < nrhs ) {
67  info = -12;
68  LAPACKE_xerbla( "LAPACKE_ssytrs_aa_2stage_work", info );
69  return info;
70  }
71  /* Allocate memory for temporary array(s) */
72  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
73  if( a_t == NULL ) {
75  goto exit_level_0;
76  }
77  tb_t = (float*)LAPACKE_malloc( sizeof(float) * ltb );
78  if( tb_t == NULL ) {
80  goto exit_level_1;
81  }
82  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
83  if( b_t == NULL ) {
85  goto exit_level_2;
86  }
87  /* Transpose input matrices */
88  LAPACKE_ssy_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
89  LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
90  /* Call LAPACK function and adjust info */
91  LAPACK_ssytrs_aa_2stage( &uplo, &n, &nrhs, a_t, &lda_t,
92  tb_t, &ltb, ipiv, ipiv2, b_t, &ldb_t, &info );
93  if( info < 0 ) {
94  info = info - 1;
95  }
96  /* Transpose output matrices */
97  LAPACKE_ssy_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
98  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
99  /* Release memory and exit */
100  LAPACKE_free( b_t );
101 exit_level_2:
102  LAPACKE_free( tb_t );
103 exit_level_1:
104  LAPACKE_free( a_t );
105 exit_level_0:
106  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
107  LAPACKE_xerbla( "LAPACKE_ssytrs_aa_2stage_work", info );
108  }
109  } else {
110  info = -1;
111  LAPACKE_xerbla( "LAPACKE_ssytrs_aa_2stage_work", info );
112  }
113  return info;
114 }
void LAPACKE_ssy_trans(int matrix_layout, char uplo, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_ssytrs_aa_2stage(char *uplo, lapack_int *n, lapack_int *nrhs, float *a, lapack_int *lda, float *tb, lapack_int *ltb, lapack_int *ipiv, lapack_int *ipiv2, 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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