LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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lapacke_clarfb.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
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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 high-level C interface to LAPACK function clarfb
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_int LAPACKE_clarfb( int matrix_layout, char side, char trans, char direct,
36 char storev, lapack_int m, lapack_int n,
38 lapack_int ldv, const lapack_complex_float* t,
40 lapack_int ldc )
41{
42 lapack_int info = 0;
43 lapack_int ldwork;
44 lapack_complex_float* work = NULL;
45 lapack_int nrows_v, ncols_v;
46 lapack_logical left, col, forward;
47 char uplo;
48 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49 LAPACKE_xerbla( "LAPACKE_clarfb", -1 );
50 return -1;
51 }
52#ifndef LAPACK_DISABLE_NAN_CHECK
53 if( LAPACKE_get_nancheck() ) {
54 /* Optionally check input matrices for NaNs */
55 left = LAPACKE_lsame( side, 'l' );
56 col = LAPACKE_lsame( storev, 'c' );
57 forward = LAPACKE_lsame( direct, 'f' );
58
59 nrows_v = ( col && left ) ? m : ( ( col && !left ) ? n : ( !col ? k : 1) );
60 ncols_v = ( !col && left ) ? m : ( ( !col && !left ) ? n : ( col ? k : 1 ) );
61 uplo = ( ( left && col ) || !( left || col ) ) ? 'l' : 'u';
62
63 if( !forward && ( col && k > nrows_v ) || ( !col && k > ncols_v )) {
64 LAPACKE_xerbla( "LAPACKE_clarfb", -8 );
65 return -8;
66 }
67 if( LAPACKE_ctz_nancheck( matrix_layout, direct, uplo, 'u',
68 nrows_v, ncols_v, v, ldv ) ) {
69 return -9;
70 }
71 if( LAPACKE_cge_nancheck( matrix_layout, k, k, t, ldt ) ) {
72 return -11;
73 }
74 if( LAPACKE_cge_nancheck( matrix_layout, m, n, c, ldc ) ) {
75 return -13;
76 }
77 }
78#endif
79 if( LAPACKE_lsame( side, 'l' ) ) {
80 ldwork = n;
81 } else if( LAPACKE_lsame( side, 'r' ) ) {
82 ldwork = m;
83 } else {
84 ldwork = 1;
85 }
86 /* Allocate memory for working array(s) */
87 work = (lapack_complex_float*)
88 LAPACKE_malloc( sizeof(lapack_complex_float) * ldwork * MAX(1,k) );
89 if( work == NULL ) {
91 goto exit_level_0;
92 }
93 /* Call middle-level interface */
94 info = LAPACKE_clarfb_work( matrix_layout, side, trans, direct, storev, m, n,
95 k, v, ldv, t, ldt, c, ldc, work, ldwork );
96 /* Release memory and exit */
97 LAPACKE_free( work );
98exit_level_0:
99 if( info == LAPACK_WORK_MEMORY_ERROR ) {
100 LAPACKE_xerbla( "LAPACKE_clarfb", info );
101 }
102 return info;
103}
#define lapack_int
Definition: lapack.h:87
#define lapack_complex_float
Definition: lapack.h:46
#define lapack_logical
Definition: lapack.h:103
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
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)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_int LAPACKE_clarfb(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_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
lapack_logical LAPACKE_ctz_nancheck(int matrix_layout, char direct, char uplo, char diag, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)