LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cggsvd()

lapack_int LAPACKE_cggsvd ( 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 35 of file lapacke_cggsvd.c.

44 {
45  lapack_int info = 0;
46  float* rwork = NULL;
47  lapack_complex_float* work = NULL;
48  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49  LAPACKE_xerbla( "LAPACKE_cggsvd", -1 );
50  return -1;
51  }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
53  if( LAPACKE_get_nancheck() ) {
54  /* Optionally check input matrices for NaNs */
55  if( LAPACKE_cge_nancheck( matrix_layout, m, n, a, lda ) ) {
56  return -10;
57  }
58  if( LAPACKE_cge_nancheck( matrix_layout, p, n, b, ldb ) ) {
59  return -12;
60  }
61  }
62 #endif
63  /* Allocate memory for working array(s) */
64  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,2*n) );
65  if( rwork == NULL ) {
67  goto exit_level_0;
68  }
69  work = (lapack_complex_float*)
70  LAPACKE_malloc( sizeof(lapack_complex_float) * MAX(1,MAX3(3*n,m,p)+n) );
71  if( work == NULL ) {
73  goto exit_level_1;
74  }
75  /* Call middle-level interface */
76  info = LAPACKE_cggsvd_work( matrix_layout, jobu, jobv, jobq, m, n, p, k, l,
77  a, lda, b, ldb, alpha, beta, u, ldu, v, ldv, q,
78  ldq, work, rwork, iwork );
79  /* Release memory and exit */
80  LAPACKE_free( work );
81 exit_level_1:
82  LAPACKE_free( rwork );
83 exit_level_0:
84  if( info == LAPACK_WORK_MEMORY_ERROR ) {
85  LAPACKE_xerbla( "LAPACKE_cggsvd", info );
86  }
87  return info;
88 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_float
Definition: lapack.h:45
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
lapack_int LAPACKE_cggsvd_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, float *rwork, lapack_int *iwork)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX3(x, y, z)
Definition: lapacke_utils.h:52
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
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