LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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lapacke_sggev3_work.c
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1/*****************************************************************************
2 Copyright (c) 2015, 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
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25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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27 THE POSSIBILITY OF SUCH DAMAGE.
28*****************************************************************************
29* Contents: Native middle-level C interface to LAPACK function sggev3
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
36 char jobvl, char jobvr, lapack_int n,
37 float* a, lapack_int lda,
38 float* b, lapack_int ldb,
39 float* alphar, float* alphai, float* beta,
40 float* vl, lapack_int ldvl,
41 float* vr, lapack_int ldvr,
42 float* work, lapack_int lwork )
43{
44 lapack_int info = 0;
45 if( matrix_layout == LAPACK_COL_MAJOR ) {
46 /* Call LAPACK function and adjust info */
47 LAPACK_sggev3( &jobvl, &jobvr, &n, a, &lda, b, &ldb, alphar, alphai,
48 beta, vl, &ldvl, vr, &ldvr, work, &lwork, &info );
49 if( info < 0 ) {
50 info = info - 1;
51 }
52 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53 lapack_int nrows_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
54 lapack_int ncols_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
55 lapack_int nrows_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
56 lapack_int ncols_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
57 lapack_int lda_t = MAX(1,n);
58 lapack_int ldb_t = MAX(1,n);
59 lapack_int ldvl_t = MAX(1,nrows_vl);
60 lapack_int ldvr_t = MAX(1,nrows_vr);
61 float* a_t = NULL;
62 float* b_t = NULL;
63 float* vl_t = NULL;
64 float* vr_t = NULL;
65 /* Check leading dimension(s) */
66 if( lda < n ) {
67 info = -6;
68 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
69 return info;
70 }
71 if( ldb < n ) {
72 info = -8;
73 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
74 return info;
75 }
76 if( ldvl < ncols_vl ) {
77 info = -13;
78 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
79 return info;
80 }
81 if( ldvr < ncols_vr ) {
82 info = -15;
83 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
84 return info;
85 }
86 /* Query optimal working array(s) size if requested */
87 if( lwork == -1 ) {
88 LAPACK_sggev3( &jobvl, &jobvr, &n, a, &lda_t, b, &ldb_t,
89 alphar, alphai, beta, vl, &ldvl_t, vr, &ldvr_t,
90 work, &lwork, &info );
91 return (info < 0) ? (info - 1) : info;
92 }
93 /* Allocate memory for temporary array(s) */
94 a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
95 if( a_t == NULL ) {
97 goto exit_level_0;
98 }
99 b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
100 if( b_t == NULL ) {
102 goto exit_level_1;
103 }
104 if( LAPACKE_lsame( jobvl, 'v' ) ) {
105 vl_t = (float*)
106 LAPACKE_malloc( sizeof(float) * ldvl_t * MAX(1,ncols_vl) );
107 if( vl_t == NULL ) {
109 goto exit_level_2;
110 }
111 }
112 if( LAPACKE_lsame( jobvr, 'v' ) ) {
113 vr_t = (float*)
114 LAPACKE_malloc( sizeof(float) * ldvr_t * MAX(1,ncols_vr) );
115 if( vr_t == NULL ) {
117 goto exit_level_3;
118 }
119 }
120 /* Transpose input matrices */
121 LAPACKE_sge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
122 LAPACKE_sge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
123 /* Call LAPACK function and adjust info */
124 LAPACK_sggev3( &jobvl, &jobvr, &n, a_t, &lda_t, b_t, &ldb_t, alphar,
125 alphai, beta, vl_t, &ldvl_t, vr_t, &ldvr_t,
126 work, &lwork, &info );
127 if( info < 0 ) {
128 info = info - 1;
129 }
130 /* Transpose output matrices */
131 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
132 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
133 if( LAPACKE_lsame( jobvl, 'v' ) ) {
134 LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrows_vl, ncols_vl, vl_t,
135 ldvl_t, vl, ldvl );
136 }
137 if( LAPACKE_lsame( jobvr, 'v' ) ) {
138 LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrows_vr, ncols_vr, vr_t,
139 ldvr_t, vr, ldvr );
140 }
141 /* Release memory and exit */
142 if( LAPACKE_lsame( jobvr, 'v' ) ) {
143 LAPACKE_free( vr_t );
144 }
145exit_level_3:
146 if( LAPACKE_lsame( jobvl, 'v' ) ) {
147 LAPACKE_free( vl_t );
148 }
149exit_level_2:
150 LAPACKE_free( b_t );
151exit_level_1:
152 LAPACKE_free( a_t );
153exit_level_0:
154 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
155 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
156 }
157 } else {
158 info = -1;
159 LAPACKE_xerbla( "LAPACKE_sggev3_work", info );
160 }
161 return info;
162}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_sggev3(...)
Definition: lapack.h:4814
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
lapack_int LAPACKE_sggev3_work(int matrix_layout, char jobvl, char jobvr, lapack_int n, float *a, lapack_int lda, float *b, lapack_int ldb, float *alphar, float *alphai, float *beta, float *vl, lapack_int ldvl, float *vr, lapack_int ldvr, float *work, lapack_int lwork)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46