LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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lapacke_zlarft_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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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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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 zlarft
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_int LAPACKE_zlarft_work( int matrix_layout, char direct, char storev,
38 const lapack_complex_double* tau,
40{
41 lapack_int info = 0;
42 lapack_int nrows_v, ncols_v;
43 lapack_int ldt_t, ldv_t;
44 lapack_complex_double *v_t = NULL, *t_t = NULL;
45 if( matrix_layout == LAPACK_COL_MAJOR ) {
46 /* Call LAPACK function and adjust info */
47 LAPACK_zlarft( &direct, &storev, &n, &k, v, &ldv, tau, t, &ldt );
48 if( info < 0 ) {
49 info = info - 1;
50 }
51 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52 nrows_v = LAPACKE_lsame( storev, 'c' ) ? n :
53 ( LAPACKE_lsame( storev, 'r' ) ? k : 1);
54 ncols_v = LAPACKE_lsame( storev, 'c' ) ? k :
55 ( LAPACKE_lsame( storev, 'r' ) ? n : 1);
56 ldt_t = MAX(1,k);
57 ldv_t = MAX(1,nrows_v);
58 /* Check leading dimension(s) */
59 if( ldt < k ) {
60 info = -10;
61 LAPACKE_xerbla( "LAPACKE_zlarft_work", info );
62 return info;
63 }
64 if( ldv < ncols_v ) {
65 info = -7;
66 LAPACKE_xerbla( "LAPACKE_zlarft_work", info );
67 return info;
68 }
69 /* Allocate memory for temporary array(s) */
72 ldv_t * MAX(1,ncols_v) );
73 if( v_t == NULL ) {
75 goto exit_level_0;
76 }
78 LAPACKE_malloc( sizeof(lapack_complex_double) * ldt_t * MAX(1,k) );
79 if( t_t == NULL ) {
81 goto exit_level_1;
82 }
83 /* Transpose input matrices */
84 LAPACKE_zge_trans( matrix_layout, nrows_v, ncols_v, v, ldv, v_t, ldv_t );
85 /* Call LAPACK function and adjust info */
86 LAPACK_zlarft( &direct, &storev, &n, &k, v_t, &ldv_t, tau, t_t,
87 &ldt_t );
88 info = 0; /* LAPACK call is ok! */
89 /* Transpose output matrices */
90 LAPACKE_zge_trans( LAPACK_COL_MAJOR, k, k, t_t, ldt_t, t, ldt );
91 /* Release memory and exit */
92 LAPACKE_free( t_t );
93exit_level_1:
94 LAPACKE_free( v_t );
95exit_level_0:
96 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
97 LAPACKE_xerbla( "LAPACKE_zlarft_work", info );
98 }
99 } else {
100 info = -1;
101 LAPACKE_xerbla( "LAPACKE_zlarft_work", info );
102 }
103 return info;
104}
#define LAPACK_zlarft(...)
Definition: lapack.h:10615
#define lapack_int
Definition: lapack.h:87
#define lapack_complex_double
Definition: lapack.h:64
#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_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_int LAPACKE_zlarft_work(int matrix_layout, char direct, char storev, lapack_int n, lapack_int k, const lapack_complex_double *v, lapack_int ldv, const lapack_complex_double *tau, lapack_complex_double *t, lapack_int ldt)