LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_cgesvdq_work()

lapack_int LAPACKE_cgesvdq_work ( int  matrix_layout,
char  joba,
char  jobp,
char  jobr,
char  jobu,
char  jobv,
lapack_int  m,
lapack_int  n,
lapack_complex_float *  a,
lapack_int  lda,
float *  s,
lapack_complex_float *  u,
lapack_int  ldu,
lapack_complex_float *  v,
lapack_int  ldv,
lapack_int *  numrank,
lapack_int *  iwork,
lapack_int  liwork,
lapack_complex_float *  cwork,
lapack_int  lcwork,
float *  rwork,
lapack_int  lrwork 
)

Definition at line 35 of file lapacke_cgesvdq_work.c.

43{
44 lapack_int info = 0;
45 if( matrix_layout == LAPACK_COL_MAJOR ) {
46 /* Call LAPACK function and adjust info */
47 LAPACK_cgesvdq( &joba, &jobp, &jobr, &jobu, &jobv, &m, &n, a, &lda, s, u, &ldu, v, &ldv,
48 numrank, iwork, &liwork, cwork, &lcwork, rwork, &lrwork, &info );
49 if( info < 0 ) {
50 info = info - 1;
51 }
52 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53 lapack_int nrows_u = ( LAPACKE_lsame( jobu, 'a' ) ||
54 LAPACKE_lsame( jobu, 's' ) ) ? m : 1;
55 lapack_int ncols_u = LAPACKE_lsame( jobu, 'a' ) ? m :
56 (LAPACKE_lsame( jobu, 's' ) ? MIN(m,n) : 1);
57 lapack_int nrows_v = LAPACKE_lsame( jobv, 'a' ) ? n :
58 ( LAPACKE_lsame( jobv, 's' ) ? MIN(m,n) : 1);
59 lapack_int lda_t = MAX(1,m);
60 lapack_int ldu_t = MAX(1,nrows_u);
61 lapack_int ldv_t = MAX(1,nrows_v);
62 lapack_complex_float* a_t = NULL;
63 lapack_complex_float* u_t = NULL;
64 lapack_complex_float* v_t = NULL;
65 /* Check leading dimension(s) */
66 if( lda < n ) {
67 info = -9;
68 LAPACKE_xerbla( "LAPACKE_cgesvdq_work", info );
69 return info;
70 }
71 if( ldu < ncols_u ) {
72 info = -12;
73 LAPACKE_xerbla( "LAPACKE_cgesvdq_work", info );
74 return info;
75 }
76 if( ldv < n ) {
77 info = -14;
78 LAPACKE_xerbla( "LAPACKE_cgesvdq_work", info );
79 return info;
80 }
81 /* Query optimal working array(s) size if requested */
82 if( lcwork == -1 ) {
83 LAPACK_cgesvdq( &joba, &jobp, &jobr, &jobu, &jobv, &m, &n, a, &lda_t,
84 s, u, &ldu_t, v, &ldv_t, numrank, iwork, &liwork,
85 cwork, &lcwork, rwork, &lrwork, &info );
86 return (info < 0) ? (info - 1) : info;
87 }
88 /* Allocate memory for temporary array(s) */
89 a_t = (lapack_complex_float*)LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
90 if( a_t == NULL ) {
91 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
92 goto exit_level_0;
93 }
94 if( LAPACKE_lsame( jobu, 'a' ) || LAPACKE_lsame( jobu, 's' ) ) {
95 u_t = (lapack_complex_float*)
96 LAPACKE_malloc( sizeof(lapack_complex_float) * ldu_t * MAX(1,ncols_u) );
97 if( u_t == NULL ) {
98 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
99 goto exit_level_1;
100 }
101 }
102 if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 's' ) ) {
103 v_t = (lapack_complex_float*)
104 LAPACKE_malloc( sizeof(lapack_complex_float) * ldv_t * MAX(1,n) );
105 if( v_t == NULL ) {
106 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
107 goto exit_level_2;
108 }
109 }
110 /* Transpose input matrices */
111 LAPACKE_cge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
112 /* Call LAPACK function and adjust info */
113 LAPACK_cgesvdq( &joba, &jobp, &jobr, &jobu, &jobv, &m, &n, a, &lda_t,
114 s, u, &ldu_t, v, &ldv_t, numrank, iwork, &liwork,
115 cwork, &lcwork, rwork, &lrwork, &info );
116 if( info < 0 ) {
117 info = info - 1;
118 }
119 /* Transpose output matrices */
120 LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
121 if( LAPACKE_lsame( jobu, 'a' ) || LAPACKE_lsame( jobu, 's' ) ) {
122 LAPACKE_cge_trans( LAPACK_COL_MAJOR, nrows_u, ncols_u, u_t, ldu_t,
123 u, ldu );
124 }
125 if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 's' ) ) {
126 LAPACKE_cge_trans( LAPACK_COL_MAJOR, nrows_v, n, v_t, ldv_t, v,
127 ldv );
128 }
129 /* Release memory and exit */
130 if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 's' ) ) {
131 LAPACKE_free( v_t );
132 }
133exit_level_2:
134 if( LAPACKE_lsame( jobu, 'a' ) || LAPACKE_lsame( jobu, 's' ) ) {
135 LAPACKE_free( u_t );
136 }
137exit_level_1:
138 LAPACKE_free( a_t );
139exit_level_0:
140 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
141 LAPACKE_xerbla( "LAPACKE_cgesvdq_work", info );
142 }
143 } else {
144 info = -1;
145 LAPACKE_xerbla( "LAPACKE_cgesvdq_work", info );
146 }
147 return info;
148}
LAPACK_cgesvdq
#define LAPACK_cgesvdq(...)
Definition: lapack.h:3470
lapack_int
#define lapack_int
Definition: lapack.h:87
lapack_complex_float
#define lapack_complex_float
Definition: lapack.h:46
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
MIN
#define MIN(x, y)
Definition: lapacke_utils.h:49
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
LAPACKE_cge_trans
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)
Definition: lapacke_cge_trans.c:39
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