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lapacke_zgejsv.c
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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
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21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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28*****************************************************************************
29* Contents: Native high-level C interface to LAPACK function zgejsv
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_int LAPACKE_zgejsv( int matrix_layout, char joba, char jobu, char jobv,
36 char jobr, char jobt, char jobp, lapack_int m,
37 lapack_int n, lapack_complex_double* a, lapack_int lda, double* sva,
38 lapack_complex_double* u, lapack_int ldu, lapack_complex_double* v, lapack_int ldv,
39 double* stat, lapack_int* istat )
40{
41 lapack_int info = 0;
42 lapack_int lwork = (
43 // 1.1
44 ( LAPACKE_lsame( jobu, 'n' ) && LAPACKE_lsame( jobv, 'n' ) &&
45 ( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) )) ? 2*n+1 :
46
47 //1.2
48 ( ( LAPACKE_lsame( jobu, 'n' ) && LAPACKE_lsame( jobv, 'n' ) &&
49 !( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) )) ? n*n+3*n :
50
51 //2.1
52 ( ( ( LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' ) ) &&
53 !( LAPACKE_lsame( jobu, 'u') || LAPACKE_lsame( jobu, 'f' ) )&&
54 ( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? 3*n :
55
56
57 //2.2
58 ( ( ( LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' ) ) &&
59 !( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' ) ) &&
60 !( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? 3*n :
61
62 //3.1
63 ( ( ( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' )) &&
64 !( LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' )) &&
65 ( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? 3*n :
66
67 //3.2
68 ( ( ( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' )) &&
69 !(LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' )) &&
70 !(LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? 3*n :
71
72 //4.1
73 ( ( ( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' ) ) &&
74 ( LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' ) ) &&
75 ( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? 5*n+2*n*n :
76
77 //4.2
78 ( ( ( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' ) ) &&
79 ( LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' ) ) &&
80 ( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? 4*n*n:
81 1) ) ) ) ) ) ) );
82 lapack_int lrwork = (
83 // 1.1
84 ( LAPACKE_lsame( jobu, 'n' ) && LAPACKE_lsame( jobv, 'n' ) &&
85 ( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) )) ? MAX(7,n+2*m) :
86
87 //1.2
88 ( ( LAPACKE_lsame( jobu, 'n' ) && LAPACKE_lsame( jobv, 'n' ) &&
89 !( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) )) ? MAX(7,2*n) :
90
91 //2.1
92 ( ( ( LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' ) ) &&
93 !( LAPACKE_lsame( jobu, 'u') || LAPACKE_lsame( jobu, 'f' ) ) &&
94 ( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? MAX( 7, n+ 2*m ) :
95
96
97 //2.2
98 ( ( ( LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' ) ) &&
99 !( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' ) ) &&
100 !( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? MAX(7,2*n) :
101
102 //3.1
103 ( ( ( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' )) &&
104 !( LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' )) &&
105 ( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? MAX( 7, n+ 2*m ) :
106
107 //3.2
108 ( ( ( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' )) &&
109 !(LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' )) &&
110 !(LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? MAX(7,2*n) :
111
112 //4.1
113 ( ( ( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' ) ) &&
114 ( LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' ) ) &&
115 ( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? MAX( 7, n+ 2*m ) :
116
117 //4.2
118 ( ( ( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' ) ) &&
119 ( LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' ) ) &&
120 ( LAPACKE_lsame( jobt, 't' ) || LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? MAX(7,2*n) :
121 7) ) ) ) ) ) ) );
122 lapack_int* iwork = NULL;
123 double* rwork = NULL;
124 lapack_complex_double* cwork = NULL;
125 lapack_int i;
126 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
127 LAPACKE_xerbla( "LAPACKE_zgejsv", -1 );
128 return -1;
129 }
130#ifndef LAPACK_DISABLE_NAN_CHECK
131 if( LAPACKE_get_nancheck() ) {
132 /* Optionally check input matrices for NaNs */
133 if( LAPACKE_zge_nancheck( matrix_layout, m, n, a, lda ) ) {
134 return -10;
135 }
136 }
137#endif
138 /* Allocate memory for working array(s) */
139 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(3,m+2*n) );
140 if( iwork == NULL ) {
141 info = LAPACK_WORK_MEMORY_ERROR;
142 goto exit_level_0;
143 }
144 lwork = MAX( lwork, 1 );
145 { /* FIXUP LWORK */
146 int want_u = LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' );
147 int want_v = LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' );
148 int want_sce = LAPACKE_lsame( joba, 'e' ) || LAPACKE_lsame( joba, 'g' );
149 if( !want_u && !want_v && !want_sce ) lwork = MAX( lwork, 2*n+1 ); // 1.1
150 if( !want_u && !want_v && want_sce ) lwork = MAX( lwork, n*n+3*n ); // 1.2
151 if( want_u && LAPACKE_lsame( jobv, 'v' ) ) lwork = MAX( lwork, 5*n+2*n*n ); // 4.1
152 if( want_u && LAPACKE_lsame( jobv, 'j' ) ) lwork = MAX( lwork, 4*n+n*n ); // 4.2
153 }
154 cwork = (lapack_complex_double*)LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
155 if( cwork == NULL ) {
156 info = LAPACK_WORK_MEMORY_ERROR;
157 goto exit_level_1;
158 }
159 lrwork = MAX3( lrwork, 7, n+2*m );
160 rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork );
161 if( rwork == NULL ) {
162 info = LAPACK_WORK_MEMORY_ERROR;
163 goto exit_level_2;
164 }
165 /* Call middle-level interface */
166 info = LAPACKE_zgejsv_work( matrix_layout, joba, jobu, jobv, jobr, jobt,
167 jobp, m, n, a, lda, sva, u, ldu, v, ldv, cwork,
168 lwork, rwork, lrwork, iwork );
169 /* Backup significant data from working array(s) */
170 for( i=0; i<7; i++ ) {
171 stat[i] = rwork[i];
172 }
173 for( i=0; i<3; i++ ) {
174 istat[i] = iwork[i];
175 }
176 /* Release memory and exit */
177 LAPACKE_free( cwork );
178exit_level_2:
179 LAPACKE_free( rwork );
180exit_level_1:
181 LAPACKE_free( iwork );
182exit_level_0:
183 if( info == LAPACK_WORK_MEMORY_ERROR ) {
184 LAPACKE_xerbla( "LAPACKE_zgejsv", info );
185 }
186 return info;
187}
lapack_int
#define lapack_int
Definition lapack.h:83
lapack_complex_double
#define lapack_complex_double
Definition lapack.h:63
LAPACK_WORK_MEMORY_ERROR
#define LAPACK_WORK_MEMORY_ERROR
Definition lapacke.h:55
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_get_nancheck
int LAPACKE_get_nancheck(void)
Definition lapacke_nancheck.c:42
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition lapacke.h:43
LAPACKE_zgejsv_work
lapack_int LAPACKE_zgejsv_work(int matrix_layout, char joba, char jobu, char jobv, char jobr, char jobt, char jobp, lapack_int m, lapack_int n, lapack_complex_double *a, lapack_int lda, double *sva, lapack_complex_double *u, lapack_int ldu, lapack_complex_double *v, lapack_int ldv, lapack_complex_double *cwork, lapack_int lwork, double *work, lapack_int lrwork, lapack_int *iwork)
Definition lapacke_zgejsv_work.c:35
lapacke_utils.h
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
LAPACKE_zge_nancheck
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
Definition lapacke_zge_nancheck.c:36
MAX3
#define MAX3(x, y, z)
Definition lapacke_utils.h:52
MAX
#define MAX(x, y)
Definition lapacke_utils.h:46
LAPACKE_zgejsv
lapack_int LAPACKE_zgejsv(int matrix_layout, char joba, char jobu, char jobv, char jobr, char jobt, char jobp, lapack_int m, lapack_int n, lapack_complex_double *a, lapack_int lda, double *sva, lapack_complex_double *u, lapack_int ldu, lapack_complex_double *v, lapack_int ldv, double *stat, lapack_int *istat)
Definition lapacke_zgejsv.c:35
n
n
Definition schur_example.m:9