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2 Copyright (c) 2014, Intel Corp.
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function dtgsja
30 * Author: Intel Corporation
31 *****************************************************************************/
32
33 #include "lapacke_utils.h"
34
LAPACKE_dtgsja_work(int matrix_layout,char jobu,char jobv,char jobq,lapack_int m,lapack_int p,lapack_int n,lapack_int k,lapack_int l,double * a,lapack_int lda,double * b,lapack_int ldb,double tola,double tolb,double * alpha,double * beta,double * u,lapack_int ldu,double * v,lapack_int ldv,double * q,lapack_int ldq,double * work,lapack_int * ncycle)35 lapack_int LAPACKE_dtgsja_work( int matrix_layout, char jobu, char jobv,
36 char jobq, lapack_int m, lapack_int p,
37 lapack_int n, lapack_int k, lapack_int l,
38 double* a, lapack_int lda, double* b,
39 lapack_int ldb, double tola, double tolb,
40 double* alpha, double* beta, double* u,
41 lapack_int ldu, double* v, lapack_int ldv,
42 double* q, lapack_int ldq, double* work,
43 lapack_int* ncycle )
44 {
45 lapack_int info = 0;
46 if( matrix_layout == LAPACK_COL_MAJOR ) {
47 /* Call LAPACK function and adjust info */
48 LAPACK_dtgsja( &jobu, &jobv, &jobq, &m, &p, &n, &k, &l, a, &lda, b,
49 &ldb, &tola, &tolb, alpha, beta, u, &ldu, v, &ldv, q,
50 &ldq, work, ncycle, &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 = -11;
68 LAPACKE_xerbla( "LAPACKE_dtgsja_work", info );
69 return info;
70 }
71 if( ldb < n ) {
72 info = -13;
73 LAPACKE_xerbla( "LAPACKE_dtgsja_work", info );
74 return info;
75 }
76 if( ldq < n ) {
77 info = -23;
78 LAPACKE_xerbla( "LAPACKE_dtgsja_work", info );
79 return info;
80 }
81 if( ldu < m ) {
82 info = -19;
83 LAPACKE_xerbla( "LAPACKE_dtgsja_work", info );
84 return info;
85 }
86 if( ldv < p ) {
87 info = -21;
88 LAPACKE_xerbla( "LAPACKE_dtgsja_work", info );
89 return info;
90 }
91 /* Allocate memory for temporary array(s) */
92 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
93 if( a_t == NULL ) {
94 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
95 goto exit_level_0;
96 }
97 b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
98 if( b_t == NULL ) {
99 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
100 goto exit_level_1;
101 }
102 if( LAPACKE_lsame( jobu, 'i' ) || LAPACKE_lsame( jobu, 'u' ) ) {
103 u_t = (double*)LAPACKE_malloc( sizeof(double) * ldu_t * MAX(1,m) );
104 if( u_t == NULL ) {
105 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
106 goto exit_level_2;
107 }
108 }
109 if( LAPACKE_lsame( jobv, 'i' ) || LAPACKE_lsame( jobv, 'v' ) ) {
110 v_t = (double*)LAPACKE_malloc( sizeof(double) * ldv_t * MAX(1,p) );
111 if( v_t == NULL ) {
112 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
113 goto exit_level_3;
114 }
115 }
116 if( LAPACKE_lsame( jobq, 'i' ) || LAPACKE_lsame( jobq, 'q' ) ) {
117 q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,n) );
118 if( q_t == NULL ) {
119 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
120 goto exit_level_4;
121 }
122 }
123 /* Transpose input matrices */
124 LAPACKE_dge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
125 LAPACKE_dge_trans( matrix_layout, p, n, b, ldb, b_t, ldb_t );
126 if( LAPACKE_lsame( jobu, 'u' ) ) {
127 LAPACKE_dge_trans( matrix_layout, m, m, u, ldu, u_t, ldu_t );
128 }
129 if( LAPACKE_lsame( jobv, 'v' ) ) {
130 LAPACKE_dge_trans( matrix_layout, p, p, v, ldv, v_t, ldv_t );
131 }
132 if( LAPACKE_lsame( jobq, 'q' ) ) {
133 LAPACKE_dge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
134 }
135 /* Call LAPACK function and adjust info */
136 LAPACK_dtgsja( &jobu, &jobv, &jobq, &m, &p, &n, &k, &l, a_t, &lda_t,
137 b_t, &ldb_t, &tola, &tolb, alpha, beta, u_t, &ldu_t, v_t,
138 &ldv_t, q_t, &ldq_t, work, ncycle, &info );
139 if( info < 0 ) {
140 info = info - 1;
141 }
142 /* Transpose output matrices */
143 LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
144 LAPACKE_dge_trans( LAPACK_COL_MAJOR, p, n, b_t, ldb_t, b, ldb );
145 if( LAPACKE_lsame( jobu, 'i' ) || LAPACKE_lsame( jobu, 'u' ) ) {
146 LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, m, u_t, ldu_t, u, ldu );
147 }
148 if( LAPACKE_lsame( jobv, 'i' ) || LAPACKE_lsame( jobv, 'v' ) ) {
149 LAPACKE_dge_trans( LAPACK_COL_MAJOR, p, p, v_t, ldv_t, v, ldv );
150 }
151 if( LAPACKE_lsame( jobq, 'i' ) || LAPACKE_lsame( jobq, 'q' ) ) {
152 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
153 }
154 /* Release memory and exit */
155 if( LAPACKE_lsame( jobq, 'i' ) || LAPACKE_lsame( jobq, 'q' ) ) {
156 LAPACKE_free( q_t );
157 }
158 exit_level_4:
159 if( LAPACKE_lsame( jobv, 'i' ) || LAPACKE_lsame( jobv, 'v' ) ) {
160 LAPACKE_free( v_t );
161 }
162 exit_level_3:
163 if( LAPACKE_lsame( jobu, 'i' ) || LAPACKE_lsame( jobu, 'u' ) ) {
164 LAPACKE_free( u_t );
165 }
166 exit_level_2:
167 LAPACKE_free( b_t );
168 exit_level_1:
169 LAPACKE_free( a_t );
170 exit_level_0:
171 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
172 LAPACKE_xerbla( "LAPACKE_dtgsja_work", info );
173 }
174 } else {
175 info = -1;
176 LAPACKE_xerbla( "LAPACKE_dtgsja_work", info );
177 }
178 return info;
179 }
180