LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dggsvp3_work()

lapack_int LAPACKE_dggsvp3_work ( int  matrix_layout,
char  jobu,
char  jobv,
char  jobq,
lapack_int  m,
lapack_int  p,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double  tola,
double  tolb,
lapack_int *  k,
lapack_int *  l,
double *  u,
lapack_int  ldu,
double *  v,
lapack_int  ldv,
double *  q,
lapack_int  ldq,
lapack_int *  iwork,
double *  tau,
double *  work,
lapack_int  lwork 
)

Definition at line 35 of file lapacke_dggsvp3_work.c.

44{
45 lapack_int info = 0;
46 if( matrix_layout == LAPACK_COL_MAJOR ) {
47 /* Call LAPACK function and adjust info */
48 LAPACK_dggsvp3( &jobu, &jobv, &jobq, &m, &p, &n, a, &lda, b, &ldb, &tola,
49 &tolb, k, l, u, &ldu, v, &ldv, q, &ldq, iwork, tau, work,
50 &lwork, &info );
51 if( info < 0 ) {
52 info = info - 1;
53 }
54 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55 lapack_int lda_t = MAX(1,m);
56 lapack_int ldb_t = MAX(1,p);
57 lapack_int ldq_t = MAX(1,n);
58 lapack_int ldu_t = MAX(1,m);
59 lapack_int ldv_t = MAX(1,p);
60 double* a_t = NULL;
61 double* b_t = NULL;
62 double* u_t = NULL;
63 double* v_t = NULL;
64 double* q_t = NULL;
65 /* Check leading dimension(s) */
66 if( lda < n ) {
67 info = -9;
68 LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
69 return info;
70 }
71 if( ldb < n ) {
72 info = -11;
73 LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
74 return info;
75 }
76 if( ldq < n ) {
77 info = -21;
78 LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
79 return info;
80 }
81 if( ldu < m ) {
82 info = -17;
83 LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
84 return info;
85 }
86 if( ldv < p ) {
87 info = -19;
88 LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
89 return info;
90 }
91 if( lwork == -1 ) {
92 LAPACK_dggsvp3( &jobu, &jobv, &jobq, &m, &p, &n, a, &lda_t, b,
93 &ldb_t, &tola, &tolb, k, l, u, &ldu_t, v,
94 &ldv_t, q, &ldq_t, iwork, tau, work, &lwork,
95 &info );
96 return (info < 0) ? (info - 1) : info;
97 }
98 /* Allocate memory for temporary array(s) */
99 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
100 if( a_t == NULL ) {
101 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
102 goto exit_level_0;
103 }
104 b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
105 if( b_t == NULL ) {
106 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
107 goto exit_level_1;
108 }
109 if( LAPACKE_lsame( jobu, 'u' ) ) {
110 u_t = (double*)LAPACKE_malloc( sizeof(double) * ldu_t * MAX(1,m) );
111 if( u_t == NULL ) {
112 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
113 goto exit_level_2;
114 }
115 }
116 if( LAPACKE_lsame( jobv, 'v' ) ) {
117 v_t = (double*)LAPACKE_malloc( sizeof(double) * ldv_t * MAX(1,p) );
118 if( v_t == NULL ) {
119 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
120 goto exit_level_3;
121 }
122 }
123 if( LAPACKE_lsame( jobq, 'q' ) ) {
124 q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,n) );
125 if( q_t == NULL ) {
126 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
127 goto exit_level_4;
128 }
129 }
130 /* Transpose input matrices */
131 LAPACKE_dge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
132 LAPACKE_dge_trans( matrix_layout, p, n, b, ldb, b_t, ldb_t );
133 /* Call LAPACK function and adjust info */
134 LAPACK_dggsvp3( &jobu, &jobv, &jobq, &m, &p, &n, a_t, &lda_t, b_t,
135 &ldb_t, &tola, &tolb, k, l, u_t, &ldu_t, v_t, &ldv_t,
136 q_t, &ldq_t, iwork, tau, work, &lwork, &info );
137 if( info < 0 ) {
138 info = info - 1;
139 }
140 /* Transpose output matrices */
141 LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
142 LAPACKE_dge_trans( LAPACK_COL_MAJOR, p, n, b_t, ldb_t, b, ldb );
143 if( LAPACKE_lsame( jobu, 'u' ) ) {
144 LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, m, u_t, ldu_t, u, ldu );
145 }
146 if( LAPACKE_lsame( jobv, 'v' ) ) {
147 LAPACKE_dge_trans( LAPACK_COL_MAJOR, p, p, v_t, ldv_t, v, ldv );
148 }
149 if( LAPACKE_lsame( jobq, 'q' ) ) {
150 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
151 }
152 /* Release memory and exit */
153 if( LAPACKE_lsame( jobq, 'q' ) ) {
154 LAPACKE_free( q_t );
155 }
156exit_level_4:
157 if( LAPACKE_lsame( jobv, 'v' ) ) {
158 LAPACKE_free( v_t );
159 }
160exit_level_3:
161 if( LAPACKE_lsame( jobu, 'u' ) ) {
162 LAPACKE_free( u_t );
163 }
164exit_level_2:
165 LAPACKE_free( b_t );
166exit_level_1:
167 LAPACKE_free( a_t );
168exit_level_0:
169 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
170 LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
171 }
172 } else {
173 info = -1;
174 LAPACKE_xerbla( "LAPACKE_dggsvp3_work", info );
175 }
176 return info;
177}
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_dggsvp3
#define LAPACK_dggsvp3(...)
Definition: lapack.h:5610
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
LAPACKE_dge_trans
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
Definition: lapacke_dge_trans.c:39
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