LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sggsvd3_work()

lapack_int LAPACKE_sggsvd3_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,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb,
float *  alpha,
float *  beta,
float *  u,
lapack_int  ldu,
float *  v,
lapack_int  ldv,
float *  q,
lapack_int  ldq,
float *  work,
lapack_int  lwork,
lapack_int *  iwork 
)

Definition at line 35 of file lapacke_sggsvd3_work.c.

44{
45 lapack_int info = 0;
46 if( matrix_layout == LAPACK_COL_MAJOR ) {
47 /* Call LAPACK function and adjust info */
48 LAPACK_sggsvd3( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a, &lda,
49 b, &ldb, alpha, beta, u, &ldu, v, &ldv, q, &ldq,
50 work, &lwork, iwork, &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 float* a_t = NULL;
61 float* b_t = NULL;
62 float* u_t = NULL;
63 float* v_t = NULL;
64 float* q_t = NULL;
65 /* Check leading dimension(s) */
66 if( lda < n ) {
67 info = -11;
68 LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
69 return info;
70 }
71 if( ldb < n ) {
72 info = -13;
73 LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
74 return info;
75 }
76 if( ldq < n ) {
77 info = -21;
78 LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
79 return info;
80 }
81 if( ldu < m ) {
82 info = -17;
83 LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
84 return info;
85 }
86 if( ldv < p ) {
87 info = -19;
88 LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
89 return info;
90 }
91 /* Query optimal working array(s) size if requested */
92 if( lwork == -1 ) {
93 LAPACK_sggsvd3( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a, &lda_t,
94 b, &ldb_t, alpha, beta, u, &ldu_t, v, &ldv_t,
95 q, &ldq_t, work, &lwork, iwork, &info );
96 return (info < 0) ? (info - 1) : info;
97 }
98
99 /* Allocate memory for temporary array(s) */
100 a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
101 if( a_t == NULL ) {
102 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
103 goto exit_level_0;
104 }
105 b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
106 if( b_t == NULL ) {
107 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
108 goto exit_level_1;
109 }
110 if( LAPACKE_lsame( jobu, 'u' ) ) {
111 u_t = (float*)LAPACKE_malloc( sizeof(float) * ldu_t * MAX(1,m) );
112 if( u_t == NULL ) {
113 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
114 goto exit_level_2;
115 }
116 }
117 if( LAPACKE_lsame( jobv, 'v' ) ) {
118 v_t = (float*)LAPACKE_malloc( sizeof(float) * ldv_t * MAX(1,p) );
119 if( v_t == NULL ) {
120 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
121 goto exit_level_3;
122 }
123 }
124 if( LAPACKE_lsame( jobq, 'q' ) ) {
125 q_t = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
126 if( q_t == NULL ) {
127 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
128 goto exit_level_4;
129 }
130 }
131 /* Transpose input matrices */
132 LAPACKE_sge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
133 LAPACKE_sge_trans( matrix_layout, p, n, b, ldb, b_t, ldb_t );
134 /* Call LAPACK function and adjust info */
135 LAPACK_sggsvd3( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a_t, &lda_t, b_t,
136 &ldb_t, alpha, beta, u_t, &ldu_t, v_t, &ldv_t, q_t,
137 &ldq_t, work, &lwork, iwork, &info );
138 if( info < 0 ) {
139 info = info - 1;
140 }
141 /* Transpose output matrices */
142 LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
143 LAPACKE_sge_trans( LAPACK_COL_MAJOR, p, n, b_t, ldb_t, b, ldb );
144 if( LAPACKE_lsame( jobu, 'u' ) ) {
145 LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, m, u_t, ldu_t, u, ldu );
146 }
147 if( LAPACKE_lsame( jobv, 'v' ) ) {
148 LAPACKE_sge_trans( LAPACK_COL_MAJOR, p, p, v_t, ldv_t, v, ldv );
149 }
150 if( LAPACKE_lsame( jobq, 'q' ) ) {
151 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
152 }
153 /* Release memory and exit */
154 if( LAPACKE_lsame( jobq, 'q' ) ) {
155 LAPACKE_free( q_t );
156 }
157exit_level_4:
158 if( LAPACKE_lsame( jobv, 'v' ) ) {
159 LAPACKE_free( v_t );
160 }
161exit_level_3:
162 if( LAPACKE_lsame( jobu, 'u' ) ) {
163 LAPACKE_free( u_t );
164 }
165exit_level_2:
166 LAPACKE_free( b_t );
167exit_level_1:
168 LAPACKE_free( a_t );
169exit_level_0:
170 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
171 LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
172 }
173 } else {
174 info = -1;
175 LAPACKE_xerbla( "LAPACKE_sggsvd3_work", info );
176 }
177 return info;
178}
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_sggsvd3
#define LAPACK_sggsvd3(...)
Definition: lapack.h:5444
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
LAPACKE_sge_trans
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
Definition: lapacke_sge_trans.c:39
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
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