LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zsptrs_work()

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

Definition at line 36 of file lapacke_zsptrs_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_zsptrs( &uplo, &n, &nrhs, ap, ipiv, b, &ldb, &info );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int ldb_t = MAX(1,n);
51  lapack_complex_double* b_t = NULL;
52  lapack_complex_double* ap_t = NULL;
53  /* Check leading dimension(s) */
54  if( ldb < nrhs ) {
55  info = -8;
56  LAPACKE_xerbla( "LAPACKE_zsptrs_work", info );
57  return info;
58  }
59  /* Allocate memory for temporary array(s) */
60  b_t = (lapack_complex_double*)
62  ldb_t * MAX(1,nrhs) );
63  if( b_t == NULL ) {
65  goto exit_level_0;
66  }
67  ap_t = (lapack_complex_double*)
69  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
70  if( ap_t == NULL ) {
72  goto exit_level_1;
73  }
74  /* Transpose input matrices */
75  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
76  LAPACKE_zsp_trans( matrix_layout, uplo, n, ap, ap_t );
77  /* Call LAPACK function and adjust info */
78  LAPACK_zsptrs( &uplo, &n, &nrhs, ap_t, ipiv, b_t, &ldb_t, &info );
79  if( info < 0 ) {
80  info = info - 1;
81  }
82  /* Transpose output matrices */
83  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
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_zsptrs_work", info );
91  }
92  } else {
93  info = -1;
94  LAPACKE_xerbla( "LAPACKE_zsptrs_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
void LAPACK_zsptrs(char *uplo, lapack_int *n, lapack_int *nrhs, const lapack_complex_double *ap, const lapack_int *ipiv, lapack_complex_double *b, lapack_int *ldb, lapack_int *info)
#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
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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