LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sposvx_work()

lapack_int LAPACKE_sposvx_work ( int  matrix_layout,
char  fact,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
float *  a,
lapack_int  lda,
float *  af,
lapack_int  ldaf,
char *  equed,
float *  s,
float *  b,
lapack_int  ldb,
float *  x,
lapack_int  ldx,
float *  rcond,
float *  ferr,
float *  berr,
float *  work,
lapack_int iwork 
)

Definition at line 36 of file lapacke_sposvx_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_sposvx( &fact, &uplo, &n, &nrhs, a, &lda, af, &ldaf, equed, s, b,
48  &ldb, x, &ldx, rcond, ferr, berr, work, iwork, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lapack_int lda_t = MAX(1,n);
54  lapack_int ldaf_t = MAX(1,n);
55  lapack_int ldb_t = MAX(1,n);
56  lapack_int ldx_t = MAX(1,n);
57  float* a_t = NULL;
58  float* af_t = NULL;
59  float* b_t = NULL;
60  float* x_t = NULL;
61  /* Check leading dimension(s) */
62  if( lda < n ) {
63  info = -7;
64  LAPACKE_xerbla( "LAPACKE_sposvx_work", info );
65  return info;
66  }
67  if( ldaf < n ) {
68  info = -9;
69  LAPACKE_xerbla( "LAPACKE_sposvx_work", info );
70  return info;
71  }
72  if( ldb < nrhs ) {
73  info = -13;
74  LAPACKE_xerbla( "LAPACKE_sposvx_work", info );
75  return info;
76  }
77  if( ldx < nrhs ) {
78  info = -15;
79  LAPACKE_xerbla( "LAPACKE_sposvx_work", info );
80  return info;
81  }
82  /* Allocate memory for temporary array(s) */
83  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
84  if( a_t == NULL ) {
86  goto exit_level_0;
87  }
88  af_t = (float*)LAPACKE_malloc( sizeof(float) * ldaf_t * MAX(1,n) );
89  if( af_t == NULL ) {
91  goto exit_level_1;
92  }
93  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
94  if( b_t == NULL ) {
96  goto exit_level_2;
97  }
98  x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
99  if( x_t == NULL ) {
101  goto exit_level_3;
102  }
103  /* Transpose input matrices */
104  LAPACKE_spo_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
105  if( LAPACKE_lsame( fact, 'f' ) ) {
106  LAPACKE_spo_trans( matrix_layout, uplo, n, af, ldaf, af_t, ldaf_t );
107  }
108  LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
109  /* Call LAPACK function and adjust info */
110  LAPACK_sposvx( &fact, &uplo, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
111  equed, s, b_t, &ldb_t, x_t, &ldx_t, rcond, ferr, berr,
112  work, iwork, &info );
113  if( info < 0 ) {
114  info = info - 1;
115  }
116  /* Transpose output matrices */
117  if( LAPACKE_lsame( fact, 'e' ) && LAPACKE_lsame( *equed, 'y' ) ) {
118  LAPACKE_spo_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
119  }
120  if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
121  LAPACKE_spo_trans( LAPACK_COL_MAJOR, uplo, n, af_t, ldaf_t, af,
122  ldaf );
123  }
124  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
125  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
126  /* Release memory and exit */
127  LAPACKE_free( x_t );
128 exit_level_3:
129  LAPACKE_free( b_t );
130 exit_level_2:
131  LAPACKE_free( af_t );
132 exit_level_1:
133  LAPACKE_free( a_t );
134 exit_level_0:
135  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
136  LAPACKE_xerbla( "LAPACKE_sposvx_work", info );
137  }
138  } else {
139  info = -1;
140  LAPACKE_xerbla( "LAPACKE_sposvx_work", info );
141  }
142  return info;
143 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_sposvx(char *fact, char *uplo, lapack_int *n, lapack_int *nrhs, float *a, lapack_int *lda, float *af, lapack_int *ldaf, char *equed, float *s, float *b, lapack_int *ldb, float *x, lapack_int *ldx, float *rcond, float *ferr, float *berr, float *work, lapack_int *iwork, 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
void LAPACKE_spo_trans(int matrix_layout, char uplo, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#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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