LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cggsvd3()

lapack_int LAPACKE_cggsvd3 ( int  matrix_layout,
char  jobu,
char  jobv,
char  jobq,
lapack_int  m,
lapack_int  n,
lapack_int  p,
lapack_int k,
lapack_int l,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float b,
lapack_int  ldb,
float *  alpha,
float *  beta,
lapack_complex_float u,
lapack_int  ldu,
lapack_complex_float v,
lapack_int  ldv,
lapack_complex_float q,
lapack_int  ldq,
lapack_int iwork 
)

Definition at line 36 of file lapacke_cggsvd3.c.

45 {
46  lapack_int info = 0;
47  float* rwork = NULL;
48  lapack_int lwork = -1;
49  lapack_complex_float* work = NULL;
50  lapack_complex_float work_query;
51  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
52  LAPACKE_xerbla( "LAPACKE_cggsvd3", -1 );
53  return -1;
54  }
55 #ifndef LAPACK_DISABLE_NAN_CHECK
56  /* Optionally check input matrices for NaNs */
57  if( LAPACKE_cge_nancheck( matrix_layout, m, n, a, lda ) ) {
58  return -10;
59  }
60  if( LAPACKE_cge_nancheck( matrix_layout, p, n, b, ldb ) ) {
61  return -12;
62  }
63 #endif
64  /* Query optimal size for working array */
65  info = LAPACKE_cggsvd3_work( matrix_layout, jobu, jobv, jobq, m, n, p, k, l,
66  a, lda, b, ldb, alpha, beta, u, ldu, v, ldv, q,
67  ldq, &work_query, lwork, rwork, iwork );
68  if( info != 0 )
69  goto exit_level_0;
70  lwork = LAPACK_C2INT( work_query );
71  /* Allocate memory for working array(s) */
72  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,2*n) );
73  if( rwork == NULL ) {
75  goto exit_level_0;
76  }
77  work = (lapack_complex_float*)
78  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
79  if( work == NULL ) {
81  goto exit_level_1;
82  }
83  /* Call middle-level interface */
84  info = LAPACKE_cggsvd3_work( matrix_layout, jobu, jobv, jobq, m, n, p, k, l,
85  a, lda, b, ldb, alpha, beta, u, ldu, v, ldv, q,
86  ldq, work, lwork, rwork, iwork );
87  /* Release memory and exit */
88  LAPACKE_free( work );
89 exit_level_1:
90  LAPACKE_free( rwork );
91 exit_level_0:
92  if( info == LAPACK_WORK_MEMORY_ERROR ) {
93  LAPACKE_xerbla( "LAPACKE_cggsvd3", info );
94  }
95  return info;
96 }
#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 lapack_complex_float
Definition: lapacke.h:74
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_C2INT(x)
Definition: lapacke.h:116
#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_cggsvd3_work(int matrix_layout, char jobu, char jobv, char jobq, lapack_int m, lapack_int n, lapack_int p, lapack_int *k, lapack_int *l, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, float *alpha, float *beta, lapack_complex_float *u, lapack_int ldu, lapack_complex_float *v, lapack_int ldv, lapack_complex_float *q, lapack_int ldq, lapack_complex_float *work, lapack_int lwork, float *rwork, lapack_int *iwork)
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