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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function zgbbrd
30 * Author: Intel Corporation
31 *****************************************************************************/
32
33 #include "lapacke_utils.h"
34
LAPACKE_zgbbrd_work(int matrix_layout,char vect,lapack_int m,lapack_int n,lapack_int ncc,lapack_int kl,lapack_int ku,lapack_complex_double * ab,lapack_int ldab,double * d,double * e,lapack_complex_double * q,lapack_int ldq,lapack_complex_double * pt,lapack_int ldpt,lapack_complex_double * c,lapack_int ldc,lapack_complex_double * work,double * rwork)35 lapack_int LAPACKE_zgbbrd_work( int matrix_layout, char vect, lapack_int m,
36 lapack_int n, lapack_int ncc, lapack_int kl,
37 lapack_int ku, lapack_complex_double* ab,
38 lapack_int ldab, double* d, double* e,
39 lapack_complex_double* q, lapack_int ldq,
40 lapack_complex_double* pt, lapack_int ldpt,
41 lapack_complex_double* c, lapack_int ldc,
42 lapack_complex_double* work, double* rwork )
43 {
44 lapack_int info = 0;
45 if( matrix_layout == LAPACK_COL_MAJOR ) {
46 /* Call LAPACK function and adjust info */
47 LAPACK_zgbbrd( &vect, &m, &n, &ncc, &kl, &ku, ab, &ldab, d, e, q, &ldq,
48 pt, &ldpt, c, &ldc, work, rwork, &info );
49 if( info < 0 ) {
50 info = info - 1;
51 }
52 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53 lapack_int ldab_t = MAX(1,kl+ku+1);
54 lapack_int ldc_t = MAX(1,m);
55 lapack_int ldpt_t = MAX(1,n);
56 lapack_int ldq_t = MAX(1,m);
57 lapack_complex_double* ab_t = NULL;
58 lapack_complex_double* q_t = NULL;
59 lapack_complex_double* pt_t = NULL;
60 lapack_complex_double* c_t = NULL;
61 /* Check leading dimension(s) */
62 if( ldab < n ) {
63 info = -9;
64 LAPACKE_xerbla( "LAPACKE_zgbbrd_work", info );
65 return info;
66 }
67 if( ldc < ncc ) {
68 info = -17;
69 LAPACKE_xerbla( "LAPACKE_zgbbrd_work", info );
70 return info;
71 }
72 if( ldpt < n ) {
73 info = -15;
74 LAPACKE_xerbla( "LAPACKE_zgbbrd_work", info );
75 return info;
76 }
77 if( ldq < m ) {
78 info = -13;
79 LAPACKE_xerbla( "LAPACKE_zgbbrd_work", info );
80 return info;
81 }
82 /* Allocate memory for temporary array(s) */
83 ab_t = (lapack_complex_double*)
84 LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
85 if( ab_t == NULL ) {
86 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
87 goto exit_level_0;
88 }
89 if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'q' ) ) {
90 q_t = (lapack_complex_double*)
91 LAPACKE_malloc( sizeof(lapack_complex_double) *
92 ldq_t * MAX(1,m) );
93 if( q_t == NULL ) {
94 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
95 goto exit_level_1;
96 }
97 }
98 if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'p' ) ) {
99 pt_t = (lapack_complex_double*)
100 LAPACKE_malloc( sizeof(lapack_complex_double) *
101 ldpt_t * MAX(1,n) );
102 if( pt_t == NULL ) {
103 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
104 goto exit_level_2;
105 }
106 }
107 if( ncc != 0 ) {
108 c_t = (lapack_complex_double*)
109 LAPACKE_malloc( sizeof(lapack_complex_double) *
110 ldc_t * MAX(1,ncc) );
111 if( c_t == NULL ) {
112 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
113 goto exit_level_3;
114 }
115 }
116 /* Transpose input matrices */
117 LAPACKE_zgb_trans( matrix_layout, m, n, kl, ku, ab, ldab, ab_t, ldab_t );
118 if( ncc != 0 ) {
119 LAPACKE_zge_trans( matrix_layout, m, ncc, c, ldc, c_t, ldc_t );
120 }
121 /* Call LAPACK function and adjust info */
122 LAPACK_zgbbrd( &vect, &m, &n, &ncc, &kl, &ku, ab_t, &ldab_t, d, e, q_t,
123 &ldq_t, pt_t, &ldpt_t, c_t, &ldc_t, work, rwork, &info );
124 if( info < 0 ) {
125 info = info - 1;
126 }
127 /* Transpose output matrices */
128 LAPACKE_zgb_trans( LAPACK_COL_MAJOR, m, n, kl, ku, ab_t, ldab_t, ab,
129 ldab );
130 if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'q' ) ) {
131 LAPACKE_zge_trans( LAPACK_COL_MAJOR, m, m, q_t, ldq_t, q, ldq );
132 }
133 if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'p' ) ) {
134 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, pt_t, ldpt_t, pt, ldpt );
135 }
136 if( ncc != 0 ) {
137 LAPACKE_zge_trans( LAPACK_COL_MAJOR, m, ncc, c_t, ldc_t, c, ldc );
138 }
139 /* Release memory and exit */
140 if( ncc != 0 ) {
141 LAPACKE_free( c_t );
142 }
143 exit_level_3:
144 if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'p' ) ) {
145 LAPACKE_free( pt_t );
146 }
147 exit_level_2:
148 if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'q' ) ) {
149 LAPACKE_free( q_t );
150 }
151 exit_level_1:
152 LAPACKE_free( ab_t );
153 exit_level_0:
154 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
155 LAPACKE_xerbla( "LAPACKE_zgbbrd_work", info );
156 }
157 } else {
158 info = -1;
159 LAPACKE_xerbla( "LAPACKE_zgbbrd_work", info );
160 }
161 return info;
162 }
163