Subversion Repositories shark

Rev

Rev 3 | Details | Compare with Previous | 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 13:54:33 EDT 1999 */
22
 
107 pj 23
#include <fftw-int.h>
24
#include <fftw.h>
2 pj 25
 
26
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -real2hc 5 */
27
 
28
/*
29
 * This function contains 12 FP additions, 6 FP multiplications,
30
 * (or, 9 additions, 3 multiplications, 3 fused multiply/add),
31
 * 12 stack variables, and 10 memory accesses
32
 */
33
static const fftw_real K250000000 = FFTW_KONST(+0.250000000000000000000000000000000000000000000);
34
static const fftw_real K559016994 = FFTW_KONST(+0.559016994374947424102293417182819058860154590);
35
static const fftw_real K587785252 = FFTW_KONST(+0.587785252292473129168705954639072768597652438);
36
static const fftw_real K951056516 = FFTW_KONST(+0.951056516295153572116439333379382143405698634);
37
 
38
/*
39
 * Generator Id's :
107 pj 40
 * $Id: frc_5.c,v 1.2 2003-03-24 11:14:59 pj Exp $
41
 * $Id: frc_5.c,v 1.2 2003-03-24 11:14:59 pj Exp $
42
 * $Id: frc_5.c,v 1.2 2003-03-24 11:14:59 pj Exp $
2 pj 43
 */
44
 
45
void fftw_real2hc_5(const fftw_real *input, fftw_real *real_output, fftw_real *imag_output, int istride, int real_ostride, int imag_ostride)
46
{
47
     fftw_real tmp10;
48
     fftw_real tmp7;
49
     fftw_real tmp8;
50
     fftw_real tmp3;
51
     fftw_real tmp11;
52
     fftw_real tmp6;
53
     fftw_real tmp9;
54
     fftw_real tmp12;
55
     ASSERT_ALIGNED_DOUBLE();
56
     tmp10 = input[0];
57
     {
58
          fftw_real tmp1;
59
          fftw_real tmp2;
60
          fftw_real tmp4;
61
          fftw_real tmp5;
62
          ASSERT_ALIGNED_DOUBLE();
63
          tmp1 = input[istride];
64
          tmp2 = input[4 * istride];
65
          tmp7 = tmp1 + tmp2;
66
          tmp4 = input[2 * istride];
67
          tmp5 = input[3 * istride];
68
          tmp8 = tmp4 + tmp5;
69
          tmp3 = tmp1 - tmp2;
70
          tmp11 = tmp7 + tmp8;
71
          tmp6 = tmp4 - tmp5;
72
     }
73
     imag_output[imag_ostride] = -((K951056516 * tmp3) + (K587785252 * tmp6));
74
     imag_output[2 * imag_ostride] = (K951056516 * tmp6) - (K587785252 * tmp3);
75
     real_output[0] = tmp10 + tmp11;
76
     tmp9 = K559016994 * (tmp7 - tmp8);
77
     tmp12 = tmp10 - (K250000000 * tmp11);
78
     real_output[real_ostride] = tmp9 + tmp12;
79
     real_output[2 * real_ostride] = tmp12 - tmp9;
80
}
81
 
82
fftw_codelet_desc fftw_real2hc_5_desc =
83
{
84
     "fftw_real2hc_5",
85
     (void (*)()) fftw_real2hc_5,
86
     5,
87
     FFTW_FORWARD,
88
     FFTW_REAL2HC,
89
     112,
90
     0,
91
     (const int *) 0,
92
};