LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cggsvd_work()

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 
)

Definition at line 36 of file lapacke_cggsvd_work.c.

47 {
48  lapack_int info = 0;
49  if( matrix_layout == LAPACK_COL_MAJOR ) {
50  /* Call LAPACK function and adjust info */
51  LAPACK_cggsvd( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a, &lda, b, &ldb,
52  alpha, beta, u, &ldu, v, &ldv, q, &ldq, work, rwork,
53  iwork, &info );
54  if( info < 0 ) {
55  info = info - 1;
56  }
57  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
58  lapack_int lda_t = MAX(1,m);
59  lapack_int ldb_t = MAX(1,p);
60  lapack_int ldq_t = MAX(1,n);
61  lapack_int ldu_t = MAX(1,m);
62  lapack_int ldv_t = MAX(1,p);
63  lapack_complex_float* a_t = NULL;
64  lapack_complex_float* b_t = NULL;
65  lapack_complex_float* u_t = NULL;
66  lapack_complex_float* v_t = NULL;
67  lapack_complex_float* q_t = NULL;
68  /* Check leading dimension(s) */
69  if( lda < n ) {
70  info = -11;
71  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
72  return info;
73  }
74  if( ldb < n ) {
75  info = -13;
76  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
77  return info;
78  }
79  if( ldq < n ) {
80  info = -21;
81  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
82  return info;
83  }
84  if( ldu < m ) {
85  info = -17;
86  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
87  return info;
88  }
89  if( ldv < p ) {
90  info = -19;
91  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
92  return info;
93  }
94  /* Allocate memory for temporary array(s) */
95  a_t = (lapack_complex_float*)
96  LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
97  if( a_t == NULL ) {
99  goto exit_level_0;
100  }
101  b_t = (lapack_complex_float*)
102  LAPACKE_malloc( sizeof(lapack_complex_float) * ldb_t * MAX(1,n) );
103  if( b_t == NULL ) {
105  goto exit_level_1;
106  }
107  if( LAPACKE_lsame( jobu, 'u' ) ) {
108  u_t = (lapack_complex_float*)
110  ldu_t * MAX(1,m) );
111  if( u_t == NULL ) {
113  goto exit_level_2;
114  }
115  }
116  if( LAPACKE_lsame( jobv, 'v' ) ) {
117  v_t = (lapack_complex_float*)
119  ldv_t * MAX(1,p) );
120  if( v_t == NULL ) {
122  goto exit_level_3;
123  }
124  }
125  if( LAPACKE_lsame( jobq, 'q' ) ) {
126  q_t = (lapack_complex_float*)
128  ldq_t * MAX(1,n) );
129  if( q_t == NULL ) {
131  goto exit_level_4;
132  }
133  }
134  /* Transpose input matrices */
135  LAPACKE_cge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
136  LAPACKE_cge_trans( matrix_layout, p, n, b, ldb, b_t, ldb_t );
137  /* Call LAPACK function and adjust info */
138  LAPACK_cggsvd( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a_t, &lda_t, b_t,
139  &ldb_t, alpha, beta, u_t, &ldu_t, v_t, &ldv_t, q_t,
140  &ldq_t, work, rwork, iwork, &info );
141  if( info < 0 ) {
142  info = info - 1;
143  }
144  /* Transpose output matrices */
145  LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
146  LAPACKE_cge_trans( LAPACK_COL_MAJOR, p, n, b_t, ldb_t, b, ldb );
147  if( LAPACKE_lsame( jobu, 'u' ) ) {
148  LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, m, u_t, ldu_t, u, ldu );
149  }
150  if( LAPACKE_lsame( jobv, 'v' ) ) {
151  LAPACKE_cge_trans( LAPACK_COL_MAJOR, p, p, v_t, ldv_t, v, ldv );
152  }
153  if( LAPACKE_lsame( jobq, 'q' ) ) {
154  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
155  }
156  /* Release memory and exit */
157  if( LAPACKE_lsame( jobq, 'q' ) ) {
158  LAPACKE_free( q_t );
159  }
160 exit_level_4:
161  if( LAPACKE_lsame( jobv, 'v' ) ) {
162  LAPACKE_free( v_t );
163  }
164 exit_level_3:
165  if( LAPACKE_lsame( jobu, 'u' ) ) {
166  LAPACKE_free( u_t );
167  }
168 exit_level_2:
169  LAPACKE_free( b_t );
170 exit_level_1:
171  LAPACKE_free( a_t );
172 exit_level_0:
173  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
174  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
175  }
176  } else {
177  info = -1;
178  LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
179  }
180  return info;
181 }
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_cggsvd(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, lapack_int *info)
#define lapack_complex_float
Definition: lapacke.h:74
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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