LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dtgsja()

lapack_int LAPACKE_dtgsja ( int  matrix_layout,
char  jobu,
char  jobv,
char  jobq,
lapack_int  m,
lapack_int  p,
lapack_int  n,
lapack_int  k,
lapack_int  l,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double  tola,
double  tolb,
double *  alpha,
double *  beta,
double *  u,
lapack_int  ldu,
double *  v,
lapack_int  ldv,
double *  q,
lapack_int  ldq,
lapack_int ncycle 
)

Definition at line 36 of file lapacke_dtgsja.c.

44 {
45  lapack_int info = 0;
46  double* work = NULL;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_dtgsja", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  if( LAPACKE_get_nancheck() ) {
53  /* Optionally check input matrices for NaNs */
54  if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
55  return -10;
56  }
57  if( LAPACKE_dge_nancheck( matrix_layout, p, n, b, ldb ) ) {
58  return -12;
59  }
60  if( LAPACKE_lsame( jobq, 'i' ) || LAPACKE_lsame( jobq, 'q' ) ) {
61  if( LAPACKE_dge_nancheck( matrix_layout, n, n, q, ldq ) ) {
62  return -22;
63  }
64  }
65  if( LAPACKE_d_nancheck( 1, &tola, 1 ) ) {
66  return -14;
67  }
68  if( LAPACKE_d_nancheck( 1, &tolb, 1 ) ) {
69  return -15;
70  }
71  if( LAPACKE_lsame( jobu, 'i' ) || LAPACKE_lsame( jobu, 'u' ) ) {
72  if( LAPACKE_dge_nancheck( matrix_layout, m, m, u, ldu ) ) {
73  return -18;
74  }
75  }
76  if( LAPACKE_lsame( jobv, 'i' ) || LAPACKE_lsame( jobv, 'v' ) ) {
77  if( LAPACKE_dge_nancheck( matrix_layout, p, p, v, ldv ) ) {
78  return -20;
79  }
80  }
81  }
82 #endif
83  /* Allocate memory for working array(s) */
84  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
85  if( work == NULL ) {
87  goto exit_level_0;
88  }
89  /* Call middle-level interface */
90  info = LAPACKE_dtgsja_work( matrix_layout, jobu, jobv, jobq, m, p, n, k, l,
91  a, lda, b, ldb, tola, tolb, alpha, beta, u, ldu,
92  v, ldv, q, ldq, work, ncycle );
93  /* Release memory and exit */
94  LAPACKE_free( work );
95 exit_level_0:
96  if( info == LAPACK_WORK_MEMORY_ERROR ) {
97  LAPACKE_xerbla( "LAPACKE_dtgsja", info );
98  }
99  return info;
100 }
#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
#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
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
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
lapack_int LAPACKE_dtgsja_work(int matrix_layout, char jobu, char jobv, char jobq, lapack_int m, lapack_int p, lapack_int n, lapack_int k, lapack_int l, double *a, lapack_int lda, double *b, lapack_int ldb, double tola, double tolb, double *alpha, double *beta, double *u, lapack_int ldu, double *v, lapack_int ldv, double *q, lapack_int ldq, double *work, lapack_int *ncycle)
int LAPACKE_get_nancheck()
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