Subversion Repositories shark

Rev

Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 pj 1
/*
2
 * Copyright (c) 1997-1999 Massachusetts Institute of Technology
3
 *
4
 * This program is free software; you can redistribute it and/or modify
5
 * it under the terms of the GNU General Public License as published by
6
 * the Free Software Foundation; either version 2 of the License, or
7
 * (at your option) any later version.
8
 *
9
 * This program is distributed in the hope that it will be useful,
10
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12
 * GNU General Public License for more details.
13
 *
14
 * You should have received a copy of the GNU General Public License
15
 * along with this program; if not, write to the Free Software
16
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
17
 *
18
 */
19
 
20
/* This file was automatically generated --- DO NOT EDIT */
21
/* Generated on Tue May 18 13:55:06 EDT 1999 */
22
 
23
#include <ports/fftw-int.h>
24
#include <ports/fftw.h>
25
 
26
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -hc2real 7 */
27
 
28
/*
29
 * This function contains 24 FP additions, 19 FP multiplications,
30
 * (or, 23 additions, 18 multiplications, 1 fused multiply/add),
31
 * 13 stack variables, and 14 memory accesses
32
 */
33
static const fftw_real K2_000000000 = FFTW_KONST(+2.000000000000000000000000000000000000000000000);
34
static const fftw_real K1_801937735 = FFTW_KONST(+1.801937735804838252472204639014890102331838324);
35
static const fftw_real K445041867 = FFTW_KONST(+0.445041867912628808577805128993589518932711138);
36
static const fftw_real K1_246979603 = FFTW_KONST(+1.246979603717467061050009768008479621264549462);
37
static const fftw_real K867767478 = FFTW_KONST(+0.867767478235116240951536665696717509219981456);
38
static const fftw_real K1_949855824 = FFTW_KONST(+1.949855824363647214036263365987862434465571601);
39
static const fftw_real K1_563662964 = FFTW_KONST(+1.563662964936059617416889053348115500464669037);
40
 
41
/*
42
 * Generator Id's :
43
 * $Id: fcr_7.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $
44
 * $Id: fcr_7.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $
45
 * $Id: fcr_7.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $
46
 */
47
 
48
void fftw_hc2real_7(const fftw_real *real_input, const fftw_real *imag_input, fftw_real *output, int real_istride, int imag_istride, int ostride)
49
{
50
     fftw_real tmp9;
51
     fftw_real tmp13;
52
     fftw_real tmp11;
53
     fftw_real tmp1;
54
     fftw_real tmp4;
55
     fftw_real tmp2;
56
     fftw_real tmp3;
57
     fftw_real tmp5;
58
     fftw_real tmp12;
59
     fftw_real tmp10;
60
     fftw_real tmp6;
61
     fftw_real tmp8;
62
     fftw_real tmp7;
63
     ASSERT_ALIGNED_DOUBLE();
64
     tmp6 = imag_input[2 * imag_istride];
65
     tmp8 = imag_input[imag_istride];
66
     tmp7 = imag_input[3 * imag_istride];
67
     tmp9 = (K1_563662964 * tmp6) - (K1_949855824 * tmp7) - (K867767478 * tmp8);
68
     tmp13 = (K867767478 * tmp6) + (K1_563662964 * tmp7) - (K1_949855824 * tmp8);
69
     tmp11 = (K1_563662964 * tmp8) + (K1_949855824 * tmp6) + (K867767478 * tmp7);
70
     tmp1 = real_input[0];
71
     tmp4 = real_input[3 * real_istride];
72
     tmp2 = real_input[real_istride];
73
     tmp3 = real_input[2 * real_istride];
74
     tmp5 = tmp1 + (K1_246979603 * tmp3) - (K445041867 * tmp4) - (K1_801937735 * tmp2);
75
     tmp12 = tmp1 + (K1_246979603 * tmp4) - (K1_801937735 * tmp3) - (K445041867 * tmp2);
76
     tmp10 = tmp1 + (K1_246979603 * tmp2) - (K1_801937735 * tmp4) - (K445041867 * tmp3);
77
     output[4 * ostride] = tmp5 - tmp9;
78
     output[3 * ostride] = tmp5 + tmp9;
79
     output[0] = tmp1 + (K2_000000000 * (tmp2 + tmp3 + tmp4));
80
     output[2 * ostride] = tmp12 + tmp13;
81
     output[5 * ostride] = tmp12 - tmp13;
82
     output[6 * ostride] = tmp10 + tmp11;
83
     output[ostride] = tmp10 - tmp11;
84
}
85
 
86
fftw_codelet_desc fftw_hc2real_7_desc =
87
{
88
     "fftw_hc2real_7",
89
     (void (*)()) fftw_hc2real_7,
90
     7,
91
     FFTW_BACKWARD,
92
     FFTW_HC2REAL,
93
     169,
94
     0,
95
     (const int *) 0,
96
};