1 /*
2 * Copyright (c) 1997-1999, 2003 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 Mon Mar 24 02:05:55 EST 2003 */
22
23 #include "fftw-int.h"
24 #include "fftw.h"
25
26 /* Generated by: /homee/stevenj/cvs/fftw/gensrc/genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -real2hc 9 */
27
28 /*
29 * This function contains 38 FP additions, 26 FP multiplications,
30 * (or, 29 additions, 17 multiplications, 9 fused multiply/add),
31 * 21 stack variables, and 18 memory accesses
32 */
33 static const fftw_real K342020143 =
34 FFTW_KONST(+0.342020143325668733044099614682259580763083368);
35 static const fftw_real K813797681 =
36 FFTW_KONST(+0.813797681349373692844693217248393223289101568);
37 static const fftw_real K939692620 =
38 FFTW_KONST(+0.939692620785908384054109277324731469936208134);
39 static const fftw_real K296198132 =
40 FFTW_KONST(+0.296198132726023843175338011893050938967728390);
41 static const fftw_real K852868531 =
42 FFTW_KONST(+0.852868531952443209628250963940074071936020296);
43 static const fftw_real K173648177 =
44 FFTW_KONST(+0.173648177666930348851716626769314796000375677);
45 static const fftw_real K556670399 =
46 FFTW_KONST(+0.556670399226419366452912952047023132968291906);
47 static const fftw_real K766044443 =
48 FFTW_KONST(+0.766044443118978035202392650555416673935832457);
49 static const fftw_real K984807753 =
50 FFTW_KONST(+0.984807753012208059366743024589523013670643252);
51 static const fftw_real K150383733 =
52 FFTW_KONST(+0.150383733180435296639271897612501926072238258);
53 static const fftw_real K642787609 =
54 FFTW_KONST(+0.642787609686539326322643409907263432907559884);
55 static const fftw_real K663413948 =
56 FFTW_KONST(+0.663413948168938396205421319635891297216863310);
57 static const fftw_real K866025403 =
58 FFTW_KONST(+0.866025403784438646763723170752936183471402627);
59 static const fftw_real K500000000 =
60 FFTW_KONST(+0.500000000000000000000000000000000000000000000);
61
62 /*
63 * Generator Id's :
64 * $Id: exprdag.ml,v 1.43 2003/03/16 23:43:46 stevenj Exp $
65 * $Id: fft.ml,v 1.44 2003/03/16 23:43:46 stevenj Exp $
66 * $Id: to_c.ml,v 1.26 2003/03/16 23:43:46 stevenj Exp $
67 */
68
fftw_real2hc_9(const fftw_real * input,fftw_real * real_output,fftw_real * imag_output,int istride,int real_ostride,int imag_ostride)69 void fftw_real2hc_9(const fftw_real *input, fftw_real *real_output,
70 fftw_real *imag_output, int istride, int real_ostride,
71 int imag_ostride)
72 {
73 fftw_real tmp1;
74 fftw_real tmp15;
75 fftw_real tmp20;
76 fftw_real tmp19;
77 fftw_real tmp4;
78 fftw_real tmp27;
79 fftw_real tmp10;
80 fftw_real tmp18;
81 fftw_real tmp21;
82 fftw_real tmp2;
83 fftw_real tmp3;
84 fftw_real tmp5;
85 fftw_real tmp16;
86 ASSERT_ALIGNED_DOUBLE;
87 tmp1 = input[0];
88 {
89 fftw_real tmp11;
90 fftw_real tmp12;
91 fftw_real tmp13;
92 fftw_real tmp14;
93 ASSERT_ALIGNED_DOUBLE;
94 tmp11 = input[2 * istride];
95 tmp12 = input[5 * istride];
96 tmp13 = input[8 * istride];
97 tmp14 = tmp12 + tmp13;
98 tmp15 = tmp11 + tmp14;
99 tmp20 = tmp11 - (K500000000 * tmp14);
100 tmp19 = tmp13 - tmp12;
101 }
102 tmp2 = input[3 * istride];
103 tmp3 = input[6 * istride];
104 tmp4 = tmp2 + tmp3;
105 tmp27 = tmp3 - tmp2;
106 {
107 fftw_real tmp6;
108 fftw_real tmp7;
109 fftw_real tmp8;
110 fftw_real tmp9;
111 ASSERT_ALIGNED_DOUBLE;
112 tmp6 = input[istride];
113 tmp7 = input[4 * istride];
114 tmp8 = input[7 * istride];
115 tmp9 = tmp7 + tmp8;
116 tmp10 = tmp6 + tmp9;
117 tmp18 = tmp6 - (K500000000 * tmp9);
118 tmp21 = tmp8 - tmp7;
119 }
120 imag_output[3 * imag_ostride] = K866025403 * (tmp15 - tmp10);
121 tmp5 = tmp1 + tmp4;
122 tmp16 = tmp10 + tmp15;
123 real_output[3 * real_ostride] = tmp5 - (K500000000 * tmp16);
124 real_output[0] = tmp5 + tmp16;
125 {
126 fftw_real tmp29;
127 fftw_real tmp25;
128 fftw_real tmp26;
129 fftw_real tmp28;
130 fftw_real tmp17;
131 fftw_real tmp22;
132 fftw_real tmp23;
133 fftw_real tmp24;
134 ASSERT_ALIGNED_DOUBLE;
135 tmp29 = K866025403 * tmp27;
136 tmp25 = (K663413948 * tmp21) - (K642787609 * tmp18);
137 tmp26 = (K150383733 * tmp19) - (K984807753 * tmp20);
138 tmp28 = tmp25 + tmp26;
139 tmp17 = tmp1 - (K500000000 * tmp4);
140 tmp22 = (K766044443 * tmp18) + (K556670399 * tmp21);
141 tmp23 = (K173648177 * tmp20) + (K852868531 * tmp19);
142 tmp24 = tmp22 + tmp23;
143 real_output[real_ostride] = tmp17 + tmp24;
144 real_output[4 * real_ostride] =
145 tmp17 + (K866025403 * (tmp25 - tmp26)) -
146 (K500000000 * tmp24);
147 real_output[2 * real_ostride] =
148 tmp17 + (K173648177 * tmp18) - (K296198132 * tmp19) -
149 (K939692620 * tmp20) - (K852868531 * tmp21);
150 imag_output[imag_ostride] = tmp29 + tmp28;
151 imag_output[4 * imag_ostride] =
152 (K866025403 * (tmp27 + (tmp23 - tmp22))) -
153 (K500000000 * tmp28);
154 imag_output[2 * imag_ostride] =
155 (K813797681 * tmp19) - (K342020143 * tmp20) -
156 (K150383733 * tmp21) - (K984807753 * tmp18) - tmp29;
157 }
158 }
159
160 fftw_codelet_desc fftw_real2hc_9_desc = {
161 "fftw_real2hc_9",
162 (void (*)()) fftw_real2hc_9,
163 9,
164 FFTW_FORWARD,
165 FFTW_REAL2HC,
166 200,
167 0,
168 (const int *) 0,
169 };
170