LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_spprfs_work()

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

Definition at line 35 of file lapacke_spprfs_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_spprfs( &uplo, &n, &nrhs, ap, afp, b, &ldb, x, &ldx, ferr, berr,
46  work, iwork, &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int ldb_t = MAX(1,n);
52  lapack_int ldx_t = MAX(1,n);
53  float* b_t = NULL;
54  float* x_t = NULL;
55  float* ap_t = NULL;
56  float* afp_t = NULL;
57  /* Check leading dimension(s) */
58  if( ldb < nrhs ) {
59  info = -8;
60  LAPACKE_xerbla( "LAPACKE_spprfs_work", info );
61  return info;
62  }
63  if( ldx < nrhs ) {
64  info = -10;
65  LAPACKE_xerbla( "LAPACKE_spprfs_work", info );
66  return info;
67  }
68  /* Allocate memory for temporary array(s) */
69  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
70  if( b_t == NULL ) {
72  goto exit_level_0;
73  }
74  x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
75  if( x_t == NULL ) {
77  goto exit_level_1;
78  }
79  ap_t = (float*)
80  LAPACKE_malloc( sizeof(float) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
81  if( ap_t == NULL ) {
83  goto exit_level_2;
84  }
85  afp_t = (float*)
86  LAPACKE_malloc( sizeof(float) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
87  if( afp_t == NULL ) {
89  goto exit_level_3;
90  }
91  /* Transpose input matrices */
92  LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
93  LAPACKE_sge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
94  LAPACKE_spp_trans( matrix_layout, uplo, n, ap, ap_t );
95  LAPACKE_spp_trans( matrix_layout, uplo, n, afp, afp_t );
96  /* Call LAPACK function and adjust info */
97  LAPACK_spprfs( &uplo, &n, &nrhs, ap_t, afp_t, b_t, &ldb_t, x_t, &ldx_t,
98  ferr, berr, work, iwork, &info );
99  if( info < 0 ) {
100  info = info - 1;
101  }
102  /* Transpose output matrices */
103  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
104  /* Release memory and exit */
105  LAPACKE_free( afp_t );
106 exit_level_3:
107  LAPACKE_free( ap_t );
108 exit_level_2:
109  LAPACKE_free( x_t );
110 exit_level_1:
111  LAPACKE_free( b_t );
112 exit_level_0:
113  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
114  LAPACKE_xerbla( "LAPACKE_spprfs_work", info );
115  }
116  } else {
117  info = -1;
118  LAPACKE_xerbla( "LAPACKE_spprfs_work", info );
119  }
120  return info;
121 }
#define LAPACK_spprfs(...)
Definition: lapack.h:13841
#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_spp_trans(int matrix_layout, char uplo, lapack_int n, const float *in, float *out)
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
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