LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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lapacke_clarfb_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
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 clarfb
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_int LAPACKE_clarfb_work( int matrix_layout, char side, char trans,
36 char direct, char storev, lapack_int m,
38 const lapack_complex_float* v, lapack_int ldv,
39 const lapack_complex_float* t, lapack_int ldt,
41 lapack_complex_float* work, lapack_int ldwork )
42{
43 lapack_int info = 0;
44 lapack_int nrows_v, ncols_v;
45 lapack_logical left, col, forward;
46 char uplo;
47 lapack_int ldc_t, ldt_t, ldv_t;
48 lapack_complex_float *v_t = NULL, *t_t = NULL, *c_t = NULL;
49 if( matrix_layout == LAPACK_COL_MAJOR ) {
50 /* Call LAPACK function and adjust info */
51 LAPACK_clarfb( &side, &trans, &direct, &storev, &m, &n, &k, v, &ldv, t,
52 &ldt, c, &ldc, work, &ldwork );
53 if( info < 0 ) {
54 info = info - 1;
55 }
56 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
57 left = LAPACKE_lsame( side, 'l' );
58 col = LAPACKE_lsame( storev, 'c' );
59 forward = LAPACKE_lsame( direct, 'f' );
60
61 nrows_v = ( col && left ) ? m : ( ( col && !left ) ? n : ( !col ? k : 1) );
62 ncols_v = ( !col && left ) ? m : ( ( !col && !left ) ? n : ( col ? k : 1 ) );
63 uplo = ( ( left && col ) || !( left || col ) ) ? 'l' : 'u';
64
65 ldc_t = MAX(1,m);
66 ldt_t = MAX(1,k);
67 ldv_t = MAX(1,nrows_v);
68 /* Check leading dimension(s) */
69 if( ldc < n ) {
70 info = -14;
71 LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
72 return info;
73 }
74 if( ldt < k ) {
75 info = -12;
76 LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
77 return info;
78 }
79 if( ldv < ncols_v ) {
80 info = -10;
81 LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
82 return info;
83 }
84 if( !forward && ( col && k > nrows_v ) || ( !col && k > ncols_v )) {
85 info = -8;
86 LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
87 return info;
88 }
89 /* Allocate memory for temporary array(s) */
92 ldv_t * MAX(1,ncols_v) );
93 if( v_t == NULL ) {
95 goto exit_level_0;
96 }
98 LAPACKE_malloc( sizeof(lapack_complex_float) * ldt_t * MAX(1,k) );
99 if( t_t == NULL ) {
101 goto exit_level_1;
102 }
103 c_t = (lapack_complex_float*)
104 LAPACKE_malloc( sizeof(lapack_complex_float) * ldc_t * MAX(1,n) );
105 if( c_t == NULL ) {
107 goto exit_level_2;
108 }
109 /* Transpose input matrices */
110 LAPACKE_ctz_trans( matrix_layout, direct, uplo, 'u', nrows_v, ncols_v,
111 v, ldv, v_t, ldv_t );
112 LAPACKE_cge_trans( matrix_layout, k, k, t, ldt, t_t, ldt_t );
113 LAPACKE_cge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
114 /* Call LAPACK function and adjust info */
115 LAPACK_clarfb( &side, &trans, &direct, &storev, &m, &n, &k, v_t, &ldv_t,
116 t_t, &ldt_t, c_t, &ldc_t, work, &ldwork );
117 info = 0; /* LAPACK call is ok! */
118 /* Transpose output matrices */
119 LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
120 /* Release memory and exit */
121 LAPACKE_free( c_t );
122exit_level_2:
123 LAPACKE_free( t_t );
124exit_level_1:
125 LAPACKE_free( v_t );
126exit_level_0:
127 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
128 LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
129 }
130 } else {
131 info = -1;
132 LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
133 }
134 return info;
135}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_clarfb(...)
Definition: lapack.h:10465
#define lapack_complex_float
Definition: lapack.h:46
#define lapack_logical
Definition: lapack.h:103
#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_clarfb_work(int matrix_layout, char side, char trans, char direct, char storev, lapack_int m, lapack_int n, lapack_int k, const lapack_complex_float *v, lapack_int ldv, const lapack_complex_float *t, lapack_int ldt, lapack_complex_float *c, lapack_int ldc, lapack_complex_float *work, lapack_int ldwork)
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)
void LAPACKE_ctz_trans(int matrix_layout, char direct, char uplo, char diag, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)