LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zspsv_work()

lapack_int LAPACKE_zspsv_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
lapack_complex_double ap,
lapack_int ipiv,
lapack_complex_double b,
lapack_int  ldb 
)

Definition at line 36 of file lapacke_zspsv_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_zspsv( &uplo, &n, &nrhs, ap, ipiv, b, &ldb, &info );
45  if( info < 0 ) {
46  info = info - 1;
47  }
48  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49  lapack_int ldb_t = MAX(1,n);
50  lapack_complex_double* b_t = NULL;
51  lapack_complex_double* ap_t = NULL;
52  /* Check leading dimension(s) */
53  if( ldb < nrhs ) {
54  info = -8;
55  LAPACKE_xerbla( "LAPACKE_zspsv_work", info );
56  return info;
57  }
58  /* Allocate memory for temporary array(s) */
59  b_t = (lapack_complex_double*)
61  ldb_t * MAX(1,nrhs) );
62  if( b_t == NULL ) {
64  goto exit_level_0;
65  }
66  ap_t = (lapack_complex_double*)
68  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
69  if( ap_t == NULL ) {
71  goto exit_level_1;
72  }
73  /* Transpose input matrices */
74  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
75  LAPACKE_zsp_trans( matrix_layout, uplo, n, ap, ap_t );
76  /* Call LAPACK function and adjust info */
77  LAPACK_zspsv( &uplo, &n, &nrhs, ap_t, ipiv, b_t, &ldb_t, &info );
78  if( info < 0 ) {
79  info = info - 1;
80  }
81  /* Transpose output matrices */
82  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
83  LAPACKE_zsp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
84  /* Release memory and exit */
85  LAPACKE_free( ap_t );
86 exit_level_1:
87  LAPACKE_free( b_t );
88 exit_level_0:
89  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
90  LAPACKE_xerbla( "LAPACKE_zspsv_work", info );
91  }
92  } else {
93  info = -1;
94  LAPACKE_xerbla( "LAPACKE_zspsv_work", info );
95  }
96  return info;
97 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
void LAPACKE_zsp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_complex_double *out)
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
#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
void LAPACK_zspsv(char *uplo, lapack_int *n, lapack_int *nrhs, lapack_complex_double *ap, lapack_int *ipiv, lapack_complex_double *b, lapack_int *ldb, lapack_int *info)
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
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