LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dspsvx_work()

lapack_int LAPACKE_dspsvx_work ( int  matrix_layout,
char  fact,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const double *  ap,
double *  afp,
lapack_int ipiv,
const double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
double *  rcond,
double *  ferr,
double *  berr,
double *  work,
lapack_int iwork 
)

Definition at line 36 of file lapacke_dspsvx_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_dspsvx( &fact, &uplo, &n, &nrhs, ap, afp, ipiv, b, &ldb, x, &ldx,
47  rcond, ferr, berr, work, iwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int ldb_t = MAX(1,n);
53  lapack_int ldx_t = MAX(1,n);
54  double* b_t = NULL;
55  double* x_t = NULL;
56  double* ap_t = NULL;
57  double* afp_t = NULL;
58  /* Check leading dimension(s) */
59  if( ldb < nrhs ) {
60  info = -10;
61  LAPACKE_xerbla( "LAPACKE_dspsvx_work", info );
62  return info;
63  }
64  if( ldx < nrhs ) {
65  info = -12;
66  LAPACKE_xerbla( "LAPACKE_dspsvx_work", info );
67  return info;
68  }
69  /* Allocate memory for temporary array(s) */
70  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
71  if( b_t == NULL ) {
73  goto exit_level_0;
74  }
75  x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
76  if( x_t == NULL ) {
78  goto exit_level_1;
79  }
80  ap_t = (double*)
81  LAPACKE_malloc( sizeof(double) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
82  if( ap_t == NULL ) {
84  goto exit_level_2;
85  }
86  afp_t = (double*)
87  LAPACKE_malloc( sizeof(double) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
88  if( afp_t == NULL ) {
90  goto exit_level_3;
91  }
92  /* Transpose input matrices */
93  LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
94  LAPACKE_dsp_trans( matrix_layout, uplo, n, ap, ap_t );
95  if( LAPACKE_lsame( fact, 'f' ) ) {
96  LAPACKE_dsp_trans( matrix_layout, uplo, n, afp, afp_t );
97  }
98  /* Call LAPACK function and adjust info */
99  LAPACK_dspsvx( &fact, &uplo, &n, &nrhs, ap_t, afp_t, ipiv, b_t, &ldb_t,
100  x_t, &ldx_t, rcond, ferr, berr, work, iwork, &info );
101  if( info < 0 ) {
102  info = info - 1;
103  }
104  /* Transpose output matrices */
105  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
106  if( LAPACKE_lsame( fact, 'n' ) ) {
107  LAPACKE_dsp_trans( LAPACK_COL_MAJOR, uplo, n, afp_t, afp );
108  }
109  /* Release memory and exit */
110  LAPACKE_free( afp_t );
111 exit_level_3:
112  LAPACKE_free( ap_t );
113 exit_level_2:
114  LAPACKE_free( x_t );
115 exit_level_1:
116  LAPACKE_free( b_t );
117 exit_level_0:
118  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
119  LAPACKE_xerbla( "LAPACKE_dspsvx_work", info );
120  }
121  } else {
122  info = -1;
123  LAPACKE_xerbla( "LAPACKE_dspsvx_work", info );
124  }
125  return info;
126 }
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_dspsvx(char *fact, char *uplo, lapack_int *n, lapack_int *nrhs, const double *ap, double *afp, lapack_int *ipiv, const double *b, lapack_int *ldb, double *x, lapack_int *ldx, double *rcond, double *ferr, double *berr, double *work, lapack_int *iwork, lapack_int *info)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#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
void LAPACKE_dsp_trans(int matrix_layout, char uplo, lapack_int n, const double *in, double *out)
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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