LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dtgsyl()

lapack_int LAPACKE_dtgsyl ( int  matrix_layout,
char  trans,
lapack_int  ijob,
lapack_int  m,
lapack_int  n,
const double *  a,
lapack_int  lda,
const double *  b,
lapack_int  ldb,
double *  c,
lapack_int  ldc,
const double *  d,
lapack_int  ldd,
const double *  e,
lapack_int  lde,
double *  f,
lapack_int  ldf,
double *  scale,
double *  dif 
)

Definition at line 36 of file lapacke_dtgsyl.c.

43 {
44  lapack_int info = 0;
45  lapack_int lwork = -1;
46  lapack_int* iwork = NULL;
47  double* work = NULL;
48  double work_query;
49  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50  LAPACKE_xerbla( "LAPACKE_dtgsyl", -1 );
51  return -1;
52  }
53 #ifndef LAPACK_DISABLE_NAN_CHECK
54  if( LAPACKE_get_nancheck() ) {
55  /* Optionally check input matrices for NaNs */
56  if( LAPACKE_dge_nancheck( matrix_layout, m, m, a, lda ) ) {
57  return -6;
58  }
59  if( LAPACKE_dge_nancheck( matrix_layout, n, n, b, ldb ) ) {
60  return -8;
61  }
62  if( LAPACKE_dge_nancheck( matrix_layout, m, n, c, ldc ) ) {
63  return -10;
64  }
65  if( LAPACKE_dge_nancheck( matrix_layout, m, m, d, ldd ) ) {
66  return -12;
67  }
68  if( LAPACKE_dge_nancheck( matrix_layout, n, n, e, lde ) ) {
69  return -14;
70  }
71  if( LAPACKE_dge_nancheck( matrix_layout, m, n, f, ldf ) ) {
72  return -16;
73  }
74  }
75 #endif
76  /* Allocate memory for working array(s) */
77  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,m+n+6) );
78  if( iwork == NULL ) {
80  goto exit_level_0;
81  }
82  /* Query optimal working array(s) size */
83  info = LAPACKE_dtgsyl_work( matrix_layout, trans, ijob, m, n, a, lda, b, ldb,
84  c, ldc, d, ldd, e, lde, f, ldf, scale, dif,
85  &work_query, lwork, iwork );
86  if( info != 0 ) {
87  goto exit_level_1;
88  }
89  lwork = (lapack_int)work_query;
90  /* Allocate memory for work arrays */
91  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
92  if( work == NULL ) {
94  goto exit_level_1;
95  }
96  /* Call middle-level interface */
97  info = LAPACKE_dtgsyl_work( matrix_layout, trans, ijob, m, n, a, lda, b, ldb,
98  c, ldc, d, ldd, e, lde, f, ldf, scale, dif,
99  work, lwork, iwork );
100  /* Release memory and exit */
101  LAPACKE_free( work );
102 exit_level_1:
103  LAPACKE_free( iwork );
104 exit_level_0:
105  if( info == LAPACK_WORK_MEMORY_ERROR ) {
106  LAPACKE_xerbla( "LAPACKE_dtgsyl", info );
107  }
108  return info;
109 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
logical function lde(RI, RJ, LR)
Definition: dblat2.f:2945
lapack_int LAPACKE_dtgsyl_work(int matrix_layout, char trans, lapack_int ijob, lapack_int m, lapack_int n, const double *a, lapack_int lda, const double *b, lapack_int ldb, double *c, lapack_int ldc, const double *d, lapack_int ldd, const double *e, lapack_int lde, double *f, lapack_int ldf, double *scale, double *dif, double *work, lapack_int lwork, lapack_int *iwork)
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#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
int LAPACKE_get_nancheck()
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