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fn_8.c
Go to the documentation of this file.
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 02:05:37 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 -notwiddle 8 */
27
28 /*
29 * This function contains 52 FP additions, 4 FP multiplications,
30 * (or, 52 additions, 4 multiplications, 0 fused multiply/add),
31 * 26 stack variables, and 32 memory accesses
32 */
33 static const fftw_real K707106781 =
34 FFTW_KONST(+0.707106781186547524400844362104849039284835938);
35
36 /*
37 * Generator Id's :
38 * $Id: exprdag.ml,v 1.43 2003/03/16 23:43:46 stevenj Exp $
39 * $Id: fft.ml,v 1.44 2003/03/16 23:43:46 stevenj Exp $
40 * $Id: to_c.ml,v 1.26 2003/03/16 23:43:46 stevenj Exp $
41 */
42
43 void fftw_no_twiddle_8(const fftw_complex *input, fftw_complex *output,
44 int istride, int ostride)
45 {
46 fftw_real tmp3;
47 fftw_real tmp23;
48 fftw_real tmp18;
49 fftw_real tmp38;
50 fftw_real tmp6;
51 fftw_real tmp37;
52 fftw_real tmp21;
53 fftw_real tmp24;
54 fftw_real tmp13;
55 fftw_real tmp49;
56 fftw_real tmp35;
57 fftw_real tmp43;
58 fftw_real tmp10;
59 fftw_real tmp48;
60 fftw_real tmp30;
61 fftw_real tmp42;
62 ASSERT_ALIGNED_DOUBLE;
63 {
64 fftw_real tmp1;
65 fftw_real tmp2;
66 fftw_real tmp19;
67 fftw_real tmp20;
68 ASSERT_ALIGNED_DOUBLE;
69 tmp1 = c_re(input[0]);
70 tmp2 = c_re(input[4 * istride]);
71 tmp3 = tmp1 + tmp2;
72 tmp23 = tmp1 - tmp2;
73 {
74 fftw_real tmp16;
75 fftw_real tmp17;
76 fftw_real tmp4;
77 fftw_real tmp5;
78 ASSERT_ALIGNED_DOUBLE;
79 tmp16 = c_im(input[0]);
80 tmp17 = c_im(input[4 * istride]);
81 tmp18 = tmp16 + tmp17;
82 tmp38 = tmp16 - tmp17;
83 tmp4 = c_re(input[2 * istride]);
84 tmp5 = c_re(input[6 * istride]);
85 tmp6 = tmp4 + tmp5;
86 tmp37 = tmp4 - tmp5;
87 }
88 tmp19 = c_im(input[2 * istride]);
89 tmp20 = c_im(input[6 * istride]);
90 tmp21 = tmp19 + tmp20;
91 tmp24 = tmp19 - tmp20;
92 {
93 fftw_real tmp11;
94 fftw_real tmp12;
95 fftw_real tmp31;
96 fftw_real tmp32;
97 fftw_real tmp33;
98 fftw_real tmp34;
99 ASSERT_ALIGNED_DOUBLE;
100 tmp11 = c_re(input[7 * istride]);
101 tmp12 = c_re(input[3 * istride]);
102 tmp31 = tmp11 - tmp12;
103 tmp32 = c_im(input[7 * istride]);
104 tmp33 = c_im(input[3 * istride]);
105 tmp34 = tmp32 - tmp33;
106 tmp13 = tmp11 + tmp12;
107 tmp49 = tmp32 + tmp33;
108 tmp35 = tmp31 - tmp34;
109 tmp43 = tmp31 + tmp34;
110 }
111 {
112 fftw_real tmp8;
113 fftw_real tmp9;
114 fftw_real tmp26;
115 fftw_real tmp27;
116 fftw_real tmp28;
117 fftw_real tmp29;
118 ASSERT_ALIGNED_DOUBLE;
119 tmp8 = c_re(input[istride]);
120 tmp9 = c_re(input[5 * istride]);
121 tmp26 = tmp8 - tmp9;
122 tmp27 = c_im(input[istride]);
123 tmp28 = c_im(input[5 * istride]);
124 tmp29 = tmp27 - tmp28;
125 tmp10 = tmp8 + tmp9;
126 tmp48 = tmp27 + tmp28;
127 tmp30 = tmp26 + tmp29;
128 tmp42 = tmp29 - tmp26;
129 }
130 }
131 {
132 fftw_real tmp7;
133 fftw_real tmp14;
134 fftw_real tmp15;
135 fftw_real tmp22;
136 ASSERT_ALIGNED_DOUBLE;
137 tmp7 = tmp3 + tmp6;
138 tmp14 = tmp10 + tmp13;
139 c_re(output[4 * ostride]) = tmp7 - tmp14;
140 c_re(output[0]) = tmp7 + tmp14;
141 tmp15 = tmp13 - tmp10;
142 tmp22 = tmp18 - tmp21;
143 c_im(output[2 * ostride]) = tmp15 + tmp22;
144 c_im(output[6 * ostride]) = tmp22 - tmp15;
145 }
146 {
147 fftw_real tmp51;
148 fftw_real tmp52;
149 fftw_real tmp47;
150 fftw_real tmp50;
151 ASSERT_ALIGNED_DOUBLE;
152 tmp51 = tmp18 + tmp21;
153 tmp52 = tmp48 + tmp49;
154 c_im(output[4 * ostride]) = tmp51 - tmp52;
155 c_im(output[0]) = tmp51 + tmp52;
156 tmp47 = tmp3 - tmp6;
157 tmp50 = tmp48 - tmp49;
158 c_re(output[6 * ostride]) = tmp47 - tmp50;
159 c_re(output[2 * ostride]) = tmp47 + tmp50;
160 }
161 {
162 fftw_real tmp25;
163 fftw_real tmp36;
164 fftw_real tmp39;
165 fftw_real tmp40;
166 ASSERT_ALIGNED_DOUBLE;
167 tmp25 = tmp23 + tmp24;
168 tmp36 = K707106781 * (tmp30 + tmp35);
169 c_re(output[5 * ostride]) = tmp25 - tmp36;
170 c_re(output[ostride]) = tmp25 + tmp36;
171 tmp39 = tmp37 + tmp38;
172 tmp40 = K707106781 * (tmp35 - tmp30);
173 c_im(output[7 * ostride]) = tmp39 - tmp40;
174 c_im(output[3 * ostride]) = tmp39 + tmp40;
175 }
176 {
177 fftw_real tmp45;
178 fftw_real tmp46;
179 fftw_real tmp41;
180 fftw_real tmp44;
181 ASSERT_ALIGNED_DOUBLE;
182 tmp45 = tmp38 - tmp37;
183 tmp46 = K707106781 * (tmp42 + tmp43);
184 c_im(output[5 * ostride]) = tmp45 - tmp46;
185 c_im(output[ostride]) = tmp45 + tmp46;
186 tmp41 = tmp23 - tmp24;
187 tmp44 = K707106781 * (tmp42 - tmp43);
188 c_re(output[7 * ostride]) = tmp41 - tmp44;
189 c_re(output[3 * ostride]) = tmp41 + tmp44;
190 }
191 }
192
193 fftw_codelet_desc fftw_no_twiddle_8_desc = {
194 "fftw_no_twiddle_8",
195 (void (*)()) fftw_no_twiddle_8,
196 8,
197 FFTW_FORWARD,
198 FFTW_NOTW,
199 177,
200 0,
201 (const int *) 0,
202 };
fftw_codelet_desc
Definition: fftw.h:126
fftw-int.h
fftw_complex
Definition: fftw.h:57
FFTW_KONST
#define FFTW_KONST(x)
Definition: fftw-int.h:178
fftw.h
fftw_no_twiddle_8_desc
fftw_codelet_desc fftw_no_twiddle_8_desc
Definition: fn_8.c:193
fftw_no_twiddle_8
void fftw_no_twiddle_8(const fftw_complex *input, fftw_complex *output, int istride, int ostride)
Definition: fn_8.c:43
c_re
#define c_re(c)
Definition: fftw.h:60
ASSERT_ALIGNED_DOUBLE
#define ASSERT_ALIGNED_DOUBLE
Definition: fftw-int.h:236
c_im
#define c_im(c)
Definition: fftw.h:61
fftw_real
float fftw_real
Definition: fftw.h:49
FFTW_NOTW
Definition: fftw.h:121
FFTW_FORWARD
Definition: fftw.h:64