1 /*****************************************************************************
2 Copyright (c) 2014, Intel Corp.
3 All rights reserved.
4
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are met:
7
8 * Redistributions of source code must retain the above copyright notice,
9 this list of conditions and the following disclaimer.
10 * Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the distribution.
13 * Neither the name of Intel Corporation nor the names of its contributors
14 may be used to endorse or promote products derived from this software
15 without specific prior written permission.
16
17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27 THE POSSIBILITY OF SUCH DAMAGE.
28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function zunbdb
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33
34 #include "lapacke_utils.h"
35
LAPACKE_zunbdb_work(int matrix_layout,char trans,char signs,lapack_int m,lapack_int p,lapack_int q,lapack_complex_double * x11,lapack_int ldx11,lapack_complex_double * x12,lapack_int ldx12,lapack_complex_double * x21,lapack_int ldx21,lapack_complex_double * x22,lapack_int ldx22,double * theta,double * phi,lapack_complex_double * taup1,lapack_complex_double * taup2,lapack_complex_double * tauq1,lapack_complex_double * tauq2,lapack_complex_double * work,lapack_int lwork)36 lapack_int LAPACKE_zunbdb_work( int matrix_layout, char trans, char signs,
37 lapack_int m, lapack_int p, lapack_int q,
38 lapack_complex_double* x11, lapack_int ldx11,
39 lapack_complex_double* x12, lapack_int ldx12,
40 lapack_complex_double* x21, lapack_int ldx21,
41 lapack_complex_double* x22, lapack_int ldx22,
42 double* theta, double* phi,
43 lapack_complex_double* taup1,
44 lapack_complex_double* taup2,
45 lapack_complex_double* tauq1,
46 lapack_complex_double* tauq2,
47 lapack_complex_double* work, lapack_int lwork )
48 {
49 lapack_int info = 0;
50 if( matrix_layout == LAPACK_COL_MAJOR ) {
51 /* Call LAPACK function and adjust info */
52 LAPACK_zunbdb( &trans, &signs, &m, &p, &q, x11, &ldx11, x12, &ldx12,
53 x21, &ldx21, x22, &ldx22, theta, phi, taup1, taup2,
54 tauq1, tauq2, work, &lwork, &info );
55 if( info < 0 ) {
56 info = info - 1;
57 }
58 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
59 lapack_int nrows_x11 = ( LAPACKE_lsame( trans, 'n' ) ? p : q);
60 lapack_int nrows_x12 = ( LAPACKE_lsame( trans, 'n' ) ? p : m-q);
61 lapack_int nrows_x21 = ( LAPACKE_lsame( trans, 'n' ) ? m-p : q);
62 lapack_int nrows_x22 = ( LAPACKE_lsame( trans, 'n' ) ? m-p : m-q);
63 lapack_int ldx11_t = MAX(1,nrows_x11);
64 lapack_int ldx12_t = MAX(1,nrows_x12);
65 lapack_int ldx21_t = MAX(1,nrows_x21);
66 lapack_int ldx22_t = MAX(1,nrows_x22);
67 lapack_complex_double* x11_t = NULL;
68 lapack_complex_double* x12_t = NULL;
69 lapack_complex_double* x21_t = NULL;
70 lapack_complex_double* x22_t = NULL;
71 /* Check leading dimension(s) */
72 if( ldx11 < q ) {
73 info = -8;
74 LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
75 return info;
76 }
77 if( ldx12 < m-q ) {
78 info = -10;
79 LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
80 return info;
81 }
82 if( ldx21 < q ) {
83 info = -12;
84 LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
85 return info;
86 }
87 if( ldx22 < m-q ) {
88 info = -14;
89 LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
90 return info;
91 }
92 /* Query optimal working array(s) size if requested */
93 if( lwork == -1 ) {
94 LAPACK_zunbdb( &trans, &signs, &m, &p, &q, x11, &ldx11_t, x12,
95 &ldx12_t, x21, &ldx21_t, x22, &ldx22_t, theta, phi,
96 taup1, taup2, tauq1, tauq2, work, &lwork, &info );
97 return (info < 0) ? (info - 1) : info;
98 }
99 /* Allocate memory for temporary array(s) */
100 x11_t = (lapack_complex_double*)
101 LAPACKE_malloc( sizeof(lapack_complex_double) *
102 ldx11_t * MAX(1,q) );
103 if( x11_t == NULL ) {
104 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
105 goto exit_level_0;
106 }
107 x12_t = (lapack_complex_double*)
108 LAPACKE_malloc( sizeof(lapack_complex_double) *
109 ldx12_t * MAX(1,m-q) );
110 if( x12_t == NULL ) {
111 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
112 goto exit_level_1;
113 }
114 x21_t = (lapack_complex_double*)
115 LAPACKE_malloc( sizeof(lapack_complex_double) *
116 ldx21_t * MAX(1,q) );
117 if( x21_t == NULL ) {
118 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
119 goto exit_level_2;
120 }
121 x22_t = (lapack_complex_double*)
122 LAPACKE_malloc( sizeof(lapack_complex_double) *
123 ldx22_t * MAX(1,m-q) );
124 if( x22_t == NULL ) {
125 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
126 goto exit_level_3;
127 }
128 /* Transpose input matrices */
129 LAPACKE_zge_trans( matrix_layout, nrows_x11, q, x11, ldx11, x11_t,
130 ldx11_t );
131 LAPACKE_zge_trans( matrix_layout, nrows_x12, m-q, x12, ldx12, x12_t,
132 ldx12_t );
133 LAPACKE_zge_trans( matrix_layout, nrows_x21, q, x21, ldx21, x21_t,
134 ldx21_t );
135 LAPACKE_zge_trans( matrix_layout, nrows_x22, m-q, x22, ldx22, x22_t,
136 ldx22_t );
137 /* Call LAPACK function and adjust info */
138 LAPACK_zunbdb( &trans, &signs, &m, &p, &q, x11_t, &ldx11_t, x12_t,
139 &ldx12_t, x21_t, &ldx21_t, x22_t, &ldx22_t, theta, phi,
140 taup1, taup2, tauq1, tauq2, work, &lwork, &info );
141 if( info < 0 ) {
142 info = info - 1;
143 }
144 /* Transpose output matrices */
145 LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_x11, q, x11_t, ldx11_t, x11,
146 ldx11 );
147 LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_x12, m-q, x12_t, ldx12_t,
148 x12, ldx12 );
149 LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_x21, q, x21_t, ldx21_t, x21,
150 ldx21 );
151 LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_x22, m-q, x22_t, ldx22_t,
152 x22, ldx22 );
153 /* Release memory and exit */
154 LAPACKE_free( x22_t );
155 exit_level_3:
156 LAPACKE_free( x21_t );
157 exit_level_2:
158 LAPACKE_free( x12_t );
159 exit_level_1:
160 LAPACKE_free( x11_t );
161 exit_level_0:
162 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
163 LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
164 }
165 } else {
166 info = -1;
167 LAPACKE_xerbla( "LAPACKE_zunbdb_work", info );
168 }
169 return info;
170 }
171