LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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lapacke_chgeqz_work.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:
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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
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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
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28*****************************************************************************
29* Contents: Native middle-level C interface to LAPACK function chgeqz
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_int LAPACKE_chgeqz_work( int matrix_layout, char job, char compq,
36 char compz, lapack_int n, lapack_int ilo,
44 float* rwork )
45{
46 lapack_int info = 0;
47 if( matrix_layout == LAPACK_COL_MAJOR ) {
48 /* Call LAPACK function and adjust info */
49 LAPACK_chgeqz( &job, &compq, &compz, &n, &ilo, &ihi, h, &ldh, t, &ldt,
50 alpha, beta, q, &ldq, z, &ldz, work, &lwork, rwork,
51 &info );
52 if( info < 0 ) {
53 info = info - 1;
54 }
55 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56 lapack_int ldh_t = MAX(1,n);
57 lapack_int ldq_t = MAX(1,n);
58 lapack_int ldt_t = MAX(1,n);
59 lapack_int ldz_t = MAX(1,n);
60 lapack_complex_float* h_t = NULL;
61 lapack_complex_float* t_t = NULL;
62 lapack_complex_float* q_t = NULL;
63 lapack_complex_float* z_t = NULL;
64 /* Check leading dimension(s) */
65 if( ldh < n ) {
66 info = -9;
67 LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
68 return info;
69 }
70 if( ldq < n ) {
71 info = -15;
72 LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
73 return info;
74 }
75 if( ldt < n ) {
76 info = -11;
77 LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
78 return info;
79 }
80 if( ldz < n ) {
81 info = -17;
82 LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
83 return info;
84 }
85 /* Query optimal working array(s) size if requested */
86 if( lwork == -1 ) {
87 LAPACK_chgeqz( &job, &compq, &compz, &n, &ilo, &ihi, h, &ldh_t, t,
88 &ldt_t, alpha, beta, q, &ldq_t, z, &ldz_t, work,
89 &lwork, rwork, &info );
90 return (info < 0) ? (info - 1) : info;
91 }
92 /* Allocate memory for temporary array(s) */
94 LAPACKE_malloc( sizeof(lapack_complex_float) * ldh_t * MAX(1,n) );
95 if( h_t == NULL ) {
97 goto exit_level_0;
98 }
100 LAPACKE_malloc( sizeof(lapack_complex_float) * ldt_t * MAX(1,n) );
101 if( t_t == NULL ) {
103 goto exit_level_1;
104 }
105 if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
106 q_t = (lapack_complex_float*)
108 ldq_t * MAX(1,n) );
109 if( q_t == NULL ) {
111 goto exit_level_2;
112 }
113 }
114 if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
115 z_t = (lapack_complex_float*)
117 ldz_t * MAX(1,n) );
118 if( z_t == NULL ) {
120 goto exit_level_3;
121 }
122 }
123 /* Transpose input matrices */
124 LAPACKE_cge_trans( matrix_layout, n, n, h, ldh, h_t, ldh_t );
125 LAPACKE_cge_trans( matrix_layout, n, n, t, ldt, t_t, ldt_t );
126 if( LAPACKE_lsame( compq, 'v' ) ) {
127 LAPACKE_cge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
128 }
129 if( LAPACKE_lsame( compz, 'v' ) ) {
130 LAPACKE_cge_trans( matrix_layout, n, n, z, ldz, z_t, ldz_t );
131 }
132 /* Call LAPACK function and adjust info */
133 LAPACK_chgeqz( &job, &compq, &compz, &n, &ilo, &ihi, h_t, &ldh_t, t_t,
134 &ldt_t, alpha, beta, q_t, &ldq_t, z_t, &ldz_t, work,
135 &lwork, rwork, &info );
136 if( info < 0 ) {
137 info = info - 1;
138 }
139 /* Transpose output matrices */
140 LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, h_t, ldh_t, h, ldh );
141 LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, t_t, ldt_t, t, ldt );
142 if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
143 LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
144 }
145 if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
146 LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
147 }
148 /* Release memory and exit */
149 if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
150 LAPACKE_free( z_t );
151 }
152exit_level_3:
153 if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
154 LAPACKE_free( q_t );
155 }
156exit_level_2:
157 LAPACKE_free( t_t );
158exit_level_1:
159 LAPACKE_free( h_t );
160exit_level_0:
161 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
162 LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
163 }
164 } else {
165 info = -1;
166 LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
167 }
168 return info;
169}
#define LAPACK_chgeqz(...)
Definition: lapack.h:8370
#define lapack_int
Definition: lapack.h:87
#define lapack_complex_float
Definition: lapack.h:46
#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_chgeqz_work(int matrix_layout, char job, char compq, char compz, lapack_int n, lapack_int ilo, lapack_int ihi, lapack_complex_float *h, lapack_int ldh, lapack_complex_float *t, lapack_int ldt, lapack_complex_float *alpha, lapack_complex_float *beta, lapack_complex_float *q, lapack_int ldq, lapack_complex_float *z, lapack_int ldz, lapack_complex_float *work, lapack_int lwork, float *rwork)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)