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 02:07:07 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 12 */
27
28 /*
29 * This function contains 38 FP additions, 10 FP multiplications,
30 * (or, 34 additions, 6 multiplications, 4 fused multiply/add),
31 * 22 stack variables, and 24 memory accesses
32 */
33 static const fftw_real K1_732050807 =
34 FFTW_KONST(+1.732050807568877293527446341505872366942805254);
35 static const fftw_real K2_000000000 =
36 FFTW_KONST(+2.000000000000000000000000000000000000000000000);
37
38 /*
39 * Generator Id's :
40 * $Id: exprdag.ml,v 1.43 2003/03/16 23:43:46 stevenj Exp $
41 * $Id: fft.ml,v 1.44 2003/03/16 23:43:46 stevenj Exp $
42 * $Id: to_c.ml,v 1.26 2003/03/16 23:43:46 stevenj Exp $
43 */
44
fftw_hc2real_12(const fftw_real * real_input,const fftw_real * imag_input,fftw_real * output,int real_istride,int imag_istride,int ostride)45 void fftw_hc2real_12(const fftw_real *real_input,
46 const fftw_real *imag_input, fftw_real *output,
47 int real_istride, int imag_istride, int ostride)
48 {
49 fftw_real tmp8;
50 fftw_real tmp11;
51 fftw_real tmp22;
52 fftw_real tmp36;
53 fftw_real tmp32;
54 fftw_real tmp33;
55 fftw_real tmp25;
56 fftw_real tmp37;
57 fftw_real tmp3;
58 fftw_real tmp27;
59 fftw_real tmp16;
60 fftw_real tmp6;
61 fftw_real tmp28;
62 fftw_real tmp20;
63 ASSERT_ALIGNED_DOUBLE;
64 {
65 fftw_real tmp9;
66 fftw_real tmp10;
67 fftw_real tmp23;
68 fftw_real tmp24;
69 ASSERT_ALIGNED_DOUBLE;
70 tmp8 = real_input[3 * real_istride];
71 tmp9 = real_input[5 * real_istride];
72 tmp10 = real_input[real_istride];
73 tmp11 = tmp9 + tmp10;
74 tmp22 = (K2_000000000 * tmp8) - tmp11;
75 tmp36 = K1_732050807 * (tmp9 - tmp10);
76 tmp32 = imag_input[3 * imag_istride];
77 tmp23 = imag_input[5 * imag_istride];
78 tmp24 = imag_input[imag_istride];
79 tmp33 = tmp23 + tmp24;
80 tmp25 = K1_732050807 * (tmp23 - tmp24);
81 tmp37 = tmp33 + (K2_000000000 * tmp32);
82 }
83 {
84 fftw_real tmp15;
85 fftw_real tmp1;
86 fftw_real tmp2;
87 fftw_real tmp13;
88 fftw_real tmp14;
89 ASSERT_ALIGNED_DOUBLE;
90 tmp14 = imag_input[4 * imag_istride];
91 tmp15 = K1_732050807 * tmp14;
92 tmp1 = real_input[0];
93 tmp2 = real_input[4 * real_istride];
94 tmp13 = tmp1 - tmp2;
95 tmp3 = tmp1 + (K2_000000000 * tmp2);
96 tmp27 = tmp13 - tmp15;
97 tmp16 = tmp13 + tmp15;
98 }
99 {
100 fftw_real tmp19;
101 fftw_real tmp4;
102 fftw_real tmp5;
103 fftw_real tmp17;
104 fftw_real tmp18;
105 ASSERT_ALIGNED_DOUBLE;
106 tmp18 = imag_input[2 * imag_istride];
107 tmp19 = K1_732050807 * tmp18;
108 tmp4 = real_input[6 * real_istride];
109 tmp5 = real_input[2 * real_istride];
110 tmp17 = tmp4 - tmp5;
111 tmp6 = tmp4 + (K2_000000000 * tmp5);
112 tmp28 = tmp17 + tmp19;
113 tmp20 = tmp17 - tmp19;
114 }
115 {
116 fftw_real tmp7;
117 fftw_real tmp12;
118 fftw_real tmp39;
119 fftw_real tmp40;
120 ASSERT_ALIGNED_DOUBLE;
121 tmp7 = tmp3 + tmp6;
122 tmp12 = K2_000000000 * (tmp8 + tmp11);
123 output[6 * ostride] = tmp7 - tmp12;
124 output[0] = tmp7 + tmp12;
125 {
126 fftw_real tmp31;
127 fftw_real tmp34;
128 fftw_real tmp21;
129 fftw_real tmp26;
130 ASSERT_ALIGNED_DOUBLE;
131 tmp31 = tmp3 - tmp6;
132 tmp34 = K2_000000000 * (tmp32 - tmp33);
133 output[9 * ostride] = tmp31 - tmp34;
134 output[3 * ostride] = tmp31 + tmp34;
135 tmp21 = tmp16 + tmp20;
136 tmp26 = tmp22 - tmp25;
137 output[2 * ostride] = tmp21 - tmp26;
138 output[8 * ostride] = tmp21 + tmp26;
139 }
140 tmp39 = tmp16 - tmp20;
141 tmp40 = tmp37 - tmp36;
142 output[5 * ostride] = tmp39 - tmp40;
143 output[11 * ostride] = tmp39 + tmp40;
144 {
145 fftw_real tmp35;
146 fftw_real tmp38;
147 fftw_real tmp29;
148 fftw_real tmp30;
149 ASSERT_ALIGNED_DOUBLE;
150 tmp35 = tmp27 - tmp28;
151 tmp38 = tmp36 + tmp37;
152 output[ostride] = tmp35 - tmp38;
153 output[7 * ostride] = tmp35 + tmp38;
154 tmp29 = tmp27 + tmp28;
155 tmp30 = tmp22 + tmp25;
156 output[10 * ostride] = tmp29 - tmp30;
157 output[4 * ostride] = tmp29 + tmp30;
158 }
159 }
160 }
161
162 fftw_codelet_desc fftw_hc2real_12_desc = {
163 "fftw_hc2real_12",
164 (void (*)()) fftw_hc2real_12,
165 12,
166 FFTW_BACKWARD,
167 FFTW_HC2REAL,
168 279,
169 0,
170 (const int *) 0,
171 };
172