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 02:07:15 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 -hc2real 14 */
27
28 /*
29 * This function contains 62 FP additions, 38 FP multiplications,
30 * (or, 60 additions, 36 multiplications, 2 fused multiply/add),
31 * 24 stack variables, and 28 memory accesses
32 */
33 static const fftw_real K445041867 =
34 FFTW_KONST(+0.445041867912628808577805128993589518932711138);
35 static const fftw_real K1_801937735 =
36 FFTW_KONST(+1.801937735804838252472204639014890102331838324);
37 static const fftw_real K1_246979603 =
38 FFTW_KONST(+1.246979603717467061050009768008479621264549462);
39 static const fftw_real K867767478 =
40 FFTW_KONST(+0.867767478235116240951536665696717509219981456);
41 static const fftw_real K1_949855824 =
42 FFTW_KONST(+1.949855824363647214036263365987862434465571601);
43 static const fftw_real K1_563662964 =
44 FFTW_KONST(+1.563662964936059617416889053348115500464669037);
45 static const fftw_real K2_000000000 =
46 FFTW_KONST(+2.000000000000000000000000000000000000000000000);
47
48 /*
49 * Generator Id's :
50 * $Id: exprdag.ml,v 1.43 2003/03/16 23:43:46 stevenj Exp $
51 * $Id: fft.ml,v 1.44 2003/03/16 23:43:46 stevenj Exp $
52 * $Id: to_c.ml,v 1.26 2003/03/16 23:43:46 stevenj Exp $
53 */
54
fftw_hc2real_14(const fftw_real * real_input,const fftw_real * imag_input,fftw_real * output,int real_istride,int imag_istride,int ostride)55 void fftw_hc2real_14(const fftw_real *real_input,
56 const fftw_real *imag_input, fftw_real *output,
57 int real_istride, int imag_istride, int ostride)
58 {
59 fftw_real tmp3;
60 fftw_real tmp13;
61 fftw_real tmp6;
62 fftw_real tmp14;
63 fftw_real tmp26;
64 fftw_real tmp35;
65 fftw_real tmp23;
66 fftw_real tmp34;
67 fftw_real tmp12;
68 fftw_real tmp16;
69 fftw_real tmp20;
70 fftw_real tmp33;
71 fftw_real tmp9;
72 fftw_real tmp15;
73 fftw_real tmp1;
74 fftw_real tmp2;
75 ASSERT_ALIGNED_DOUBLE;
76 tmp1 = real_input[0];
77 tmp2 = real_input[7 * real_istride];
78 tmp3 = tmp1 - tmp2;
79 tmp13 = tmp1 + tmp2;
80 {
81 fftw_real tmp4;
82 fftw_real tmp5;
83 fftw_real tmp24;
84 fftw_real tmp25;
85 ASSERT_ALIGNED_DOUBLE;
86 tmp4 = real_input[2 * real_istride];
87 tmp5 = real_input[5 * real_istride];
88 tmp6 = tmp4 - tmp5;
89 tmp14 = tmp4 + tmp5;
90 tmp24 = imag_input[2 * imag_istride];
91 tmp25 = imag_input[5 * imag_istride];
92 tmp26 = tmp24 - tmp25;
93 tmp35 = tmp24 + tmp25;
94 }
95 {
96 fftw_real tmp21;
97 fftw_real tmp22;
98 fftw_real tmp10;
99 fftw_real tmp11;
100 ASSERT_ALIGNED_DOUBLE;
101 tmp21 = imag_input[6 * imag_istride];
102 tmp22 = imag_input[imag_istride];
103 tmp23 = tmp21 - tmp22;
104 tmp34 = tmp21 + tmp22;
105 tmp10 = real_input[6 * real_istride];
106 tmp11 = real_input[real_istride];
107 tmp12 = tmp10 - tmp11;
108 tmp16 = tmp10 + tmp11;
109 }
110 {
111 fftw_real tmp18;
112 fftw_real tmp19;
113 fftw_real tmp7;
114 fftw_real tmp8;
115 ASSERT_ALIGNED_DOUBLE;
116 tmp18 = imag_input[4 * imag_istride];
117 tmp19 = imag_input[3 * imag_istride];
118 tmp20 = tmp18 - tmp19;
119 tmp33 = tmp18 + tmp19;
120 tmp7 = real_input[4 * real_istride];
121 tmp8 = real_input[3 * real_istride];
122 tmp9 = tmp7 - tmp8;
123 tmp15 = tmp7 + tmp8;
124 }
125 {
126 fftw_real tmp38;
127 fftw_real tmp37;
128 fftw_real tmp29;
129 fftw_real tmp28;
130 ASSERT_ALIGNED_DOUBLE;
131 output[7 * ostride] =
132 tmp3 + (K2_000000000 * (tmp6 + tmp9 + tmp12));
133 tmp38 =
134 (K1_563662964 * tmp35) + (K1_949855824 * tmp33) +
135 (K867767478 * tmp34);
136 tmp37 =
137 tmp3 + (K1_246979603 * tmp6) - (K1_801937735 * tmp12) -
138 (K445041867 * tmp9);
139 output[ostride] = tmp37 - tmp38;
140 output[13 * ostride] = tmp37 + tmp38;
141 {
142 fftw_real tmp40;
143 fftw_real tmp39;
144 fftw_real tmp36;
145 fftw_real tmp32;
146 ASSERT_ALIGNED_DOUBLE;
147 tmp40 =
148 (K867767478 * tmp33) + (K1_563662964 * tmp34) -
149 (K1_949855824 * tmp35);
150 tmp39 =
151 tmp3 + (K1_246979603 * tmp12) - (K1_801937735 * tmp9) -
152 (K445041867 * tmp6);
153 output[5 * ostride] = tmp39 - tmp40;
154 output[9 * ostride] = tmp39 + tmp40;
155 tmp36 =
156 (K1_563662964 * tmp33) - (K1_949855824 * tmp34) -
157 (K867767478 * tmp35);
158 tmp32 =
159 tmp3 + (K1_246979603 * tmp9) - (K445041867 * tmp12) -
160 (K1_801937735 * tmp6);
161 output[11 * ostride] = tmp32 - tmp36;
162 output[3 * ostride] = tmp32 + tmp36;
163 }
164 output[0] = tmp13 + (K2_000000000 * (tmp14 + tmp15 + tmp16));
165 tmp29 =
166 (K867767478 * tmp20) + (K1_563662964 * tmp23) -
167 (K1_949855824 * tmp26);
168 tmp28 =
169 tmp13 + (K1_246979603 * tmp16) - (K1_801937735 * tmp15) -
170 (K445041867 * tmp14);
171 output[12 * ostride] = tmp28 - tmp29;
172 output[2 * ostride] = tmp28 + tmp29;
173 {
174 fftw_real tmp31;
175 fftw_real tmp30;
176 fftw_real tmp27;
177 fftw_real tmp17;
178 ASSERT_ALIGNED_DOUBLE;
179 tmp31 =
180 (K1_563662964 * tmp26) + (K1_949855824 * tmp20) +
181 (K867767478 * tmp23);
182 tmp30 =
183 tmp13 + (K1_246979603 * tmp14) -
184 (K1_801937735 * tmp16) - (K445041867 * tmp15);
185 output[8 * ostride] = tmp30 - tmp31;
186 output[6 * ostride] = tmp30 + tmp31;
187 tmp27 =
188 (K1_563662964 * tmp20) - (K1_949855824 * tmp23) -
189 (K867767478 * tmp26);
190 tmp17 =
191 tmp13 + (K1_246979603 * tmp15) - (K445041867 * tmp16) -
192 (K1_801937735 * tmp14);
193 output[4 * ostride] = tmp17 - tmp27;
194 output[10 * ostride] = tmp17 + tmp27;
195 }
196 }
197 }
198
199 fftw_codelet_desc fftw_hc2real_14_desc = {
200 "fftw_hc2real_14",
201 (void (*)()) fftw_hc2real_14,
202 14,
203 FFTW_BACKWARD,
204 FFTW_HC2REAL,
205 323,
206 0,
207 (const int *) 0,
208 };
209