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 02:05:59 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 13 */
27
28 /*
29 * This function contains 76 FP additions, 34 FP multiplications,
30 * (or, 57 additions, 15 multiplications, 19 fused multiply/add),
31 * 34 stack variables, and 26 memory accesses
32 */
33 static const fftw_real K083333333 =
34 FFTW_KONST(+0.083333333333333333333333333333333333333333333);
35 static const fftw_real K075902986 =
36 FFTW_KONST(+0.075902986037193865983102897245103540356428373);
37 static const fftw_real K251768516 =
38 FFTW_KONST(+0.251768516431883313623436926934233488546674281);
39 static const fftw_real K503537032 =
40 FFTW_KONST(+0.503537032863766627246873853868466977093348562);
41 static const fftw_real K113854479 =
42 FFTW_KONST(+0.113854479055790798974654345867655310534642560);
43 static const fftw_real K265966249 =
44 FFTW_KONST(+0.265966249214837287587521063842185948798330267);
45 static const fftw_real K387390585 =
46 FFTW_KONST(+0.387390585467617292130675966426762851778775217);
47 static const fftw_real K300462606 =
48 FFTW_KONST(+0.300462606288665774426601772289207995520941381);
49 static const fftw_real K258260390 =
50 FFTW_KONST(+0.258260390311744861420450644284508567852516811);
51 static const fftw_real K132983124 =
52 FFTW_KONST(+0.132983124607418643793760531921092974399165133);
53 static const fftw_real K2_000000000 =
54 FFTW_KONST(+2.000000000000000000000000000000000000000000000);
55 static const fftw_real K1_732050807 =
56 FFTW_KONST(+1.732050807568877293527446341505872366942805254);
57 static const fftw_real K156891391 =
58 FFTW_KONST(+0.156891391051584611046832726756003269660212636);
59 static const fftw_real K256247671 =
60 FFTW_KONST(+0.256247671582936600958684654061725059144125175);
61 static const fftw_real K011599105 =
62 FFTW_KONST(+0.011599105605768290721655456654083252189827041);
63 static const fftw_real K300238635 =
64 FFTW_KONST(+0.300238635966332641462884626667381504676006424);
65 static const fftw_real K174138601 =
66 FFTW_KONST(+0.174138601152135905005660794929264742616964676);
67 static const fftw_real K575140729 =
68 FFTW_KONST(+0.575140729474003121368385547455453388461001608);
69 static const fftw_real K866025403 =
70 FFTW_KONST(+0.866025403784438646763723170752936183471402627);
71 static const fftw_real K500000000 =
72 FFTW_KONST(+0.500000000000000000000000000000000000000000000);
73
74 /*
75 * Generator Id's :
76 * $Id: exprdag.ml,v 1.43 2003/03/16 23:43:46 stevenj Exp $
77 * $Id: fft.ml,v 1.44 2003/03/16 23:43:46 stevenj Exp $
78 * $Id: to_c.ml,v 1.26 2003/03/16 23:43:46 stevenj Exp $
79 */
80
fftw_real2hc_13(const fftw_real * input,fftw_real * real_output,fftw_real * imag_output,int istride,int real_ostride,int imag_ostride)81 void fftw_real2hc_13(const fftw_real *input, fftw_real *real_output,
82 fftw_real *imag_output, int istride, int real_ostride,
83 int imag_ostride)
84 {
85 fftw_real tmp65;
86 fftw_real tmp36;
87 fftw_real tmp19;
88 fftw_real tmp32;
89 fftw_real tmp51;
90 fftw_real tmp62;
91 fftw_real tmp39;
92 fftw_real tmp58;
93 fftw_real tmp59;
94 fftw_real tmp66;
95 fftw_real tmp56;
96 fftw_real tmp63;
97 fftw_real tmp30;
98 fftw_real tmp33;
99 ASSERT_ALIGNED_DOUBLE;
100 tmp65 = input[0];
101 {
102 fftw_real tmp3;
103 fftw_real tmp53;
104 fftw_real tmp17;
105 fftw_real tmp38;
106 fftw_real tmp28;
107 fftw_real tmp14;
108 fftw_real tmp37;
109 fftw_real tmp25;
110 fftw_real tmp6;
111 fftw_real tmp20;
112 fftw_real tmp9;
113 fftw_real tmp21;
114 fftw_real tmp10;
115 fftw_real tmp54;
116 fftw_real tmp1;
117 fftw_real tmp2;
118 ASSERT_ALIGNED_DOUBLE;
119 tmp1 = input[8 * istride];
120 tmp2 = input[5 * istride];
121 tmp3 = tmp1 - tmp2;
122 tmp53 = tmp1 + tmp2;
123 {
124 fftw_real tmp26;
125 fftw_real tmp15;
126 fftw_real tmp16;
127 fftw_real tmp27;
128 ASSERT_ALIGNED_DOUBLE;
129 tmp26 = input[12 * istride];
130 tmp15 = input[4 * istride];
131 tmp16 = input[10 * istride];
132 tmp27 = tmp15 + tmp16;
133 tmp17 = tmp15 - tmp16;
134 tmp38 = tmp26 + tmp27;
135 tmp28 = tmp26 - (K500000000 * tmp27);
136 }
137 {
138 fftw_real tmp23;
139 fftw_real tmp12;
140 fftw_real tmp13;
141 fftw_real tmp24;
142 ASSERT_ALIGNED_DOUBLE;
143 tmp23 = input[istride];
144 tmp12 = input[3 * istride];
145 tmp13 = input[9 * istride];
146 tmp24 = tmp12 + tmp13;
147 tmp14 = tmp12 - tmp13;
148 tmp37 = tmp23 + tmp24;
149 tmp25 = tmp23 - (K500000000 * tmp24);
150 }
151 {
152 fftw_real tmp4;
153 fftw_real tmp5;
154 fftw_real tmp7;
155 fftw_real tmp8;
156 ASSERT_ALIGNED_DOUBLE;
157 tmp4 = input[6 * istride];
158 tmp5 = input[11 * istride];
159 tmp6 = tmp4 - tmp5;
160 tmp20 = tmp4 + tmp5;
161 tmp7 = input[2 * istride];
162 tmp8 = input[7 * istride];
163 tmp9 = tmp7 - tmp8;
164 tmp21 = tmp7 + tmp8;
165 }
166 tmp10 = tmp6 + tmp9;
167 tmp54 = tmp20 + tmp21;
168 tmp36 = tmp3 - tmp10;
169 {
170 fftw_real tmp11;
171 fftw_real tmp18;
172 fftw_real tmp49;
173 fftw_real tmp50;
174 ASSERT_ALIGNED_DOUBLE;
175 tmp11 = tmp3 + (K500000000 * tmp10);
176 tmp18 = K866025403 * (tmp14 + tmp17);
177 tmp19 = tmp11 - tmp18;
178 tmp32 = tmp11 + tmp18;
179 tmp49 = tmp9 - tmp6;
180 tmp50 = tmp14 - tmp17;
181 tmp51 = tmp49 - tmp50;
182 tmp62 = tmp49 + tmp50;
183 }
184 tmp39 = tmp37 - tmp38;
185 tmp58 = tmp37 + tmp38;
186 tmp59 = tmp53 + tmp54;
187 tmp66 = tmp59 + tmp58;
188 {
189 fftw_real tmp52;
190 fftw_real tmp55;
191 fftw_real tmp22;
192 fftw_real tmp29;
193 ASSERT_ALIGNED_DOUBLE;
194 tmp52 = tmp25 + tmp28;
195 tmp55 = tmp53 - (K500000000 * tmp54);
196 tmp56 = tmp52 - tmp55;
197 tmp63 = tmp55 + tmp52;
198 tmp22 = K866025403 * (tmp20 - tmp21);
199 tmp29 = tmp25 - tmp28;
200 tmp30 = tmp22 + tmp29;
201 tmp33 = tmp29 - tmp22;
202 }
203 }
204 real_output[0] = tmp66 + tmp65;
205 {
206 fftw_real tmp40;
207 fftw_real tmp46;
208 fftw_real tmp35;
209 fftw_real tmp48;
210 fftw_real tmp43;
211 fftw_real tmp45;
212 fftw_real tmp44;
213 fftw_real tmp47;
214 ASSERT_ALIGNED_DOUBLE;
215 tmp40 = (K575140729 * tmp36) - (K174138601 * tmp39);
216 tmp46 = (K174138601 * tmp36) + (K575140729 * tmp39);
217 {
218 fftw_real tmp31;
219 fftw_real tmp34;
220 fftw_real tmp41;
221 fftw_real tmp42;
222 ASSERT_ALIGNED_DOUBLE;
223 tmp31 = (K300238635 * tmp19) + (K011599105 * tmp30);
224 tmp34 = (K256247671 * tmp32) + (K156891391 * tmp33);
225 tmp35 = tmp31 - tmp34;
226 tmp48 = K1_732050807 * (tmp31 + tmp34);
227 tmp41 = (K300238635 * tmp30) - (K011599105 * tmp19);
228 tmp42 = (K156891391 * tmp32) - (K256247671 * tmp33);
229 tmp43 = K1_732050807 * (tmp41 - tmp42);
230 tmp45 = tmp41 + tmp42;
231 }
232 imag_output[imag_ostride] = (K2_000000000 * tmp35) + tmp40;
233 tmp44 = tmp40 - tmp35;
234 imag_output[4 * imag_ostride] = -(tmp43 + tmp44);
235 imag_output[3 * imag_ostride] = tmp44 - tmp43;
236 imag_output[5 * imag_ostride] =
237 -((K2_000000000 * tmp45) + tmp46);
238 tmp47 = tmp45 - tmp46;
239 imag_output[2 * imag_ostride] = tmp47 - tmp48;
240 imag_output[6 * imag_ostride] = tmp48 + tmp47;
241 }
242 {
243 fftw_real tmp61;
244 fftw_real tmp70;
245 fftw_real tmp74;
246 fftw_real tmp76;
247 fftw_real tmp68;
248 fftw_real tmp69;
249 fftw_real tmp57;
250 fftw_real tmp60;
251 fftw_real tmp71;
252 fftw_real tmp75;
253 ASSERT_ALIGNED_DOUBLE;
254 tmp57 = (K132983124 * tmp51) + (K258260390 * tmp56);
255 tmp60 = K300462606 * (tmp58 - tmp59);
256 tmp61 = (K2_000000000 * tmp57) + tmp60;
257 tmp70 = tmp60 - tmp57;
258 {
259 fftw_real tmp72;
260 fftw_real tmp73;
261 fftw_real tmp64;
262 fftw_real tmp67;
263 ASSERT_ALIGNED_DOUBLE;
264 tmp72 = (K387390585 * tmp51) - (K265966249 * tmp56);
265 tmp73 = (K113854479 * tmp62) - (K503537032 * tmp63);
266 tmp74 = tmp72 + tmp73;
267 tmp76 = tmp73 - tmp72;
268 tmp64 = (K251768516 * tmp62) + (K075902986 * tmp63);
269 tmp67 = tmp65 - (K083333333 * tmp66);
270 tmp68 = (K2_000000000 * tmp64) + tmp67;
271 tmp69 = tmp67 - tmp64;
272 }
273 real_output[real_ostride] = tmp61 + tmp68;
274 real_output[5 * real_ostride] = tmp68 - tmp61;
275 tmp71 = tmp69 - tmp70;
276 real_output[2 * real_ostride] = tmp71 - tmp74;
277 real_output[6 * real_ostride] = tmp74 + tmp71;
278 tmp75 = tmp70 + tmp69;
279 real_output[3 * real_ostride] = tmp75 - tmp76;
280 real_output[4 * real_ostride] = tmp76 + tmp75;
281 }
282 }
283
284 fftw_codelet_desc fftw_real2hc_13_desc = {
285 "fftw_real2hc_13",
286 (void (*)()) fftw_real2hc_13,
287 13,
288 FFTW_FORWARD,
289 FFTW_REAL2HC,
290 288,
291 0,
292 (const int *) 0,
293 };
294