LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dgejsv_work()

lapack_int LAPACKE_dgejsv_work ( int  matrix_layout,
char  joba,
char  jobu,
char  jobv,
char  jobr,
char  jobt,
char  jobp,
lapack_int  m,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  sva,
double *  u,
lapack_int  ldu,
double *  v,
lapack_int  ldv,
double *  work,
lapack_int  lwork,
lapack_int iwork 
)

Definition at line 35 of file lapacke_dgejsv_work.c.

42{
43 lapack_int info = 0;
44 if( matrix_layout == LAPACK_COL_MAJOR ) {
45 /* Call LAPACK function and adjust info */
46 LAPACK_dgejsv( &joba, &jobu, &jobv, &jobr, &jobt, &jobp, &m, &n, a,
47 &lda, sva, u, &ldu, v, &ldv, work, &lwork, iwork,
48 &info );
49 if( info < 0 ) {
50 info = info - 1;
51 }
52 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53 lapack_int nu = LAPACKE_lsame( jobu, 'n' ) ? 1 : m;
54 lapack_int nv = LAPACKE_lsame( jobv, 'n' ) ? 1 : n;
55 lapack_int ncols_u = LAPACKE_lsame( jobu, 'n' ) ? 1 :
56 LAPACKE_lsame( jobu, 'f' ) ? m : n;
57 lapack_int lda_t = MAX(1,m);
58 lapack_int ldu_t = MAX(1,nu);
59 lapack_int ldv_t = MAX(1,nv);
60 double* a_t = NULL;
61 double* u_t = NULL;
62 double* v_t = NULL;
63 /* Check leading dimension(s) */
64 if( lda < n ) {
65 info = -11;
66 LAPACKE_xerbla( "LAPACKE_dgejsv_work", info );
67 return info;
68 }
69 if( ldu < ncols_u ) {
70 info = -14;
71 LAPACKE_xerbla( "LAPACKE_dgejsv_work", info );
72 return info;
73 }
74 if( ldv < n ) {
75 info = -16;
76 LAPACKE_xerbla( "LAPACKE_dgejsv_work", info );
77 return info;
78 }
79 /* Allocate memory for temporary array(s) */
80 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
81 if( a_t == NULL ) {
83 goto exit_level_0;
84 }
85 if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
86 LAPACKE_lsame( jobu, 'w' ) ) {
87 u_t = (double*)LAPACKE_malloc( sizeof(double) * ldu_t * MAX(1,ncols_u) );
88 if( u_t == NULL ) {
90 goto exit_level_1;
91 }
92 }
93 if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
94 LAPACKE_lsame( jobv, 'w' ) ) {
95 v_t = (double*)LAPACKE_malloc( sizeof(double) * ldv_t * MAX(1,n) );
96 if( v_t == NULL ) {
98 goto exit_level_2;
99 }
100 }
101 /* Transpose input matrices */
102 LAPACKE_dge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
103 /* Call LAPACK function and adjust info */
104 LAPACK_dgejsv( &joba, &jobu, &jobv, &jobr, &jobt, &jobp, &m, &n, a_t,
105 &lda_t, sva, u_t, &ldu_t, v_t, &ldv_t, work, &lwork,
106 iwork, &info );
107 if( info < 0 ) {
108 info = info - 1;
109 }
110 /* Transpose output matrices */
111 if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
112 LAPACKE_lsame( jobu, 'w' ) ) {
113 LAPACKE_dge_trans( LAPACK_COL_MAJOR, nu, ncols_u, u_t, ldu_t, u, ldu );
114 }
115 if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
116 LAPACKE_lsame( jobv, 'w' ) ) {
117 LAPACKE_dge_trans( LAPACK_COL_MAJOR, nv, n, v_t, ldv_t, v, ldv );
118 }
119 /* Release memory and exit */
120 if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
121 LAPACKE_lsame( jobv, 'w' ) ) {
122 LAPACKE_free( v_t );
123 }
124exit_level_2:
125 if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
126 LAPACKE_lsame( jobu, 'w' ) ) {
127 LAPACKE_free( u_t );
128 }
129exit_level_1:
130 LAPACKE_free( a_t );
131exit_level_0:
132 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
133 LAPACKE_xerbla( "LAPACKE_dgejsv_work", info );
134 }
135 } else {
136 info = -1;
137 LAPACKE_xerbla( "LAPACKE_dgejsv_work", info );
138 }
139 return info;
140}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_dgejsv(...)
Definition: lapack.h:2062
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
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