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2 | pj | 1 | /* |
2 | * Copyright (c) 1997-1999 Massachusetts Institute of Technology |
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3 | * |
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4 | * This program is free software; you can redistribute it and/or modify |
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5 | * it under the terms of the GNU General Public License as published by |
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6 | * the Free Software Foundation; either version 2 of the License, or |
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7 | * (at your option) any later version. |
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8 | * |
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9 | * This program is distributed in the hope that it will be useful, |
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10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 | * GNU General Public License for more details. |
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13 | * |
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14 | * You should have received a copy of the GNU General Public License |
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15 | * along with this program; if not, write to the Free Software |
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16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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17 | * |
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18 | */ |
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19 | |||
20 | /* This file was automatically generated --- DO NOT EDIT */ |
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21 | /* Generated on Tue May 18 13:55:21 EDT 1999 */ |
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22 | |||
23 | #include <ports/fftw-int.h> |
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24 | #include <ports/fftw.h> |
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25 | |||
26 | /* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -twiddle 8 */ |
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27 | |||
28 | /* |
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29 | * This function contains 66 FP additions, 32 FP multiplications, |
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30 | * (or, 52 additions, 18 multiplications, 14 fused multiply/add), |
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31 | * 28 stack variables, and 32 memory accesses |
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32 | */ |
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33 | static const fftw_real K707106781 = FFTW_KONST(+0.707106781186547524400844362104849039284835938); |
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34 | |||
35 | /* |
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36 | * Generator Id's : |
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37 | * $Id: ftw_8.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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38 | * $Id: ftw_8.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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39 | * $Id: ftw_8.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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40 | */ |
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41 | |||
42 | void fftw_twiddle_8(fftw_complex *A, const fftw_complex *W, int iostride, int m, int dist) |
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43 | { |
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44 | int i; |
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45 | fftw_complex *inout; |
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46 | inout = A; |
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47 | for (i = m; i > 0; i = i - 1, inout = inout + dist, W = W + 7) { |
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48 | fftw_real tmp7; |
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49 | fftw_real tmp43; |
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50 | fftw_real tmp71; |
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51 | fftw_real tmp76; |
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52 | fftw_real tmp41; |
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53 | fftw_real tmp53; |
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54 | fftw_real tmp56; |
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55 | fftw_real tmp65; |
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56 | fftw_real tmp18; |
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57 | fftw_real tmp77; |
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58 | fftw_real tmp46; |
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59 | fftw_real tmp68; |
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60 | fftw_real tmp30; |
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61 | fftw_real tmp48; |
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62 | fftw_real tmp51; |
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63 | fftw_real tmp64; |
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64 | ASSERT_ALIGNED_DOUBLE(); |
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65 | { |
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66 | fftw_real tmp1; |
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67 | fftw_real tmp70; |
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68 | fftw_real tmp6; |
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69 | fftw_real tmp69; |
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70 | ASSERT_ALIGNED_DOUBLE(); |
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71 | tmp1 = c_re(inout[0]); |
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72 | tmp70 = c_im(inout[0]); |
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73 | { |
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74 | fftw_real tmp3; |
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75 | fftw_real tmp5; |
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76 | fftw_real tmp2; |
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77 | fftw_real tmp4; |
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78 | ASSERT_ALIGNED_DOUBLE(); |
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79 | tmp3 = c_re(inout[4 * iostride]); |
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80 | tmp5 = c_im(inout[4 * iostride]); |
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81 | tmp2 = c_re(W[3]); |
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82 | tmp4 = c_im(W[3]); |
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83 | tmp6 = (tmp2 * tmp3) - (tmp4 * tmp5); |
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84 | tmp69 = (tmp4 * tmp3) + (tmp2 * tmp5); |
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85 | } |
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86 | tmp7 = tmp1 + tmp6; |
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87 | tmp43 = tmp1 - tmp6; |
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88 | tmp71 = tmp69 + tmp70; |
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89 | tmp76 = tmp70 - tmp69; |
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90 | } |
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91 | { |
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92 | fftw_real tmp35; |
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93 | fftw_real tmp54; |
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94 | fftw_real tmp40; |
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95 | fftw_real tmp55; |
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96 | ASSERT_ALIGNED_DOUBLE(); |
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97 | { |
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98 | fftw_real tmp32; |
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99 | fftw_real tmp34; |
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100 | fftw_real tmp31; |
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101 | fftw_real tmp33; |
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102 | ASSERT_ALIGNED_DOUBLE(); |
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103 | tmp32 = c_re(inout[7 * iostride]); |
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104 | tmp34 = c_im(inout[7 * iostride]); |
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105 | tmp31 = c_re(W[6]); |
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106 | tmp33 = c_im(W[6]); |
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107 | tmp35 = (tmp31 * tmp32) - (tmp33 * tmp34); |
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108 | tmp54 = (tmp33 * tmp32) + (tmp31 * tmp34); |
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109 | } |
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110 | { |
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111 | fftw_real tmp37; |
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112 | fftw_real tmp39; |
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113 | fftw_real tmp36; |
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114 | fftw_real tmp38; |
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115 | ASSERT_ALIGNED_DOUBLE(); |
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116 | tmp37 = c_re(inout[3 * iostride]); |
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117 | tmp39 = c_im(inout[3 * iostride]); |
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118 | tmp36 = c_re(W[2]); |
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119 | tmp38 = c_im(W[2]); |
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120 | tmp40 = (tmp36 * tmp37) - (tmp38 * tmp39); |
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121 | tmp55 = (tmp38 * tmp37) + (tmp36 * tmp39); |
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122 | } |
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123 | tmp41 = tmp35 + tmp40; |
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124 | tmp53 = tmp35 - tmp40; |
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125 | tmp56 = tmp54 - tmp55; |
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126 | tmp65 = tmp54 + tmp55; |
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127 | } |
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128 | { |
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129 | fftw_real tmp12; |
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130 | fftw_real tmp44; |
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131 | fftw_real tmp17; |
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132 | fftw_real tmp45; |
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133 | ASSERT_ALIGNED_DOUBLE(); |
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134 | { |
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135 | fftw_real tmp9; |
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136 | fftw_real tmp11; |
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137 | fftw_real tmp8; |
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138 | fftw_real tmp10; |
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139 | ASSERT_ALIGNED_DOUBLE(); |
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140 | tmp9 = c_re(inout[2 * iostride]); |
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141 | tmp11 = c_im(inout[2 * iostride]); |
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142 | tmp8 = c_re(W[1]); |
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143 | tmp10 = c_im(W[1]); |
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144 | tmp12 = (tmp8 * tmp9) - (tmp10 * tmp11); |
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145 | tmp44 = (tmp10 * tmp9) + (tmp8 * tmp11); |
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146 | } |
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147 | { |
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148 | fftw_real tmp14; |
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149 | fftw_real tmp16; |
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150 | fftw_real tmp13; |
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151 | fftw_real tmp15; |
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152 | ASSERT_ALIGNED_DOUBLE(); |
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153 | tmp14 = c_re(inout[6 * iostride]); |
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154 | tmp16 = c_im(inout[6 * iostride]); |
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155 | tmp13 = c_re(W[5]); |
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156 | tmp15 = c_im(W[5]); |
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157 | tmp17 = (tmp13 * tmp14) - (tmp15 * tmp16); |
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158 | tmp45 = (tmp15 * tmp14) + (tmp13 * tmp16); |
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159 | } |
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160 | tmp18 = tmp12 + tmp17; |
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161 | tmp77 = tmp12 - tmp17; |
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162 | tmp46 = tmp44 - tmp45; |
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163 | tmp68 = tmp44 + tmp45; |
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164 | } |
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165 | { |
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166 | fftw_real tmp24; |
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167 | fftw_real tmp49; |
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168 | fftw_real tmp29; |
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169 | fftw_real tmp50; |
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170 | ASSERT_ALIGNED_DOUBLE(); |
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171 | { |
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172 | fftw_real tmp21; |
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173 | fftw_real tmp23; |
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174 | fftw_real tmp20; |
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175 | fftw_real tmp22; |
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176 | ASSERT_ALIGNED_DOUBLE(); |
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177 | tmp21 = c_re(inout[iostride]); |
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178 | tmp23 = c_im(inout[iostride]); |
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179 | tmp20 = c_re(W[0]); |
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180 | tmp22 = c_im(W[0]); |
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181 | tmp24 = (tmp20 * tmp21) - (tmp22 * tmp23); |
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182 | tmp49 = (tmp22 * tmp21) + (tmp20 * tmp23); |
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183 | } |
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184 | { |
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185 | fftw_real tmp26; |
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186 | fftw_real tmp28; |
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187 | fftw_real tmp25; |
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188 | fftw_real tmp27; |
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189 | ASSERT_ALIGNED_DOUBLE(); |
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190 | tmp26 = c_re(inout[5 * iostride]); |
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191 | tmp28 = c_im(inout[5 * iostride]); |
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192 | tmp25 = c_re(W[4]); |
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193 | tmp27 = c_im(W[4]); |
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194 | tmp29 = (tmp25 * tmp26) - (tmp27 * tmp28); |
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195 | tmp50 = (tmp27 * tmp26) + (tmp25 * tmp28); |
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196 | } |
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197 | tmp30 = tmp24 + tmp29; |
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198 | tmp48 = tmp24 - tmp29; |
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199 | tmp51 = tmp49 - tmp50; |
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200 | tmp64 = tmp49 + tmp50; |
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201 | } |
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202 | { |
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203 | fftw_real tmp19; |
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204 | fftw_real tmp42; |
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205 | fftw_real tmp63; |
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206 | fftw_real tmp66; |
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207 | ASSERT_ALIGNED_DOUBLE(); |
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208 | tmp19 = tmp7 + tmp18; |
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209 | tmp42 = tmp30 + tmp41; |
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210 | c_re(inout[4 * iostride]) = tmp19 - tmp42; |
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211 | c_re(inout[0]) = tmp19 + tmp42; |
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212 | { |
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213 | fftw_real tmp73; |
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214 | fftw_real tmp74; |
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215 | fftw_real tmp67; |
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216 | fftw_real tmp72; |
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217 | ASSERT_ALIGNED_DOUBLE(); |
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218 | tmp73 = tmp41 - tmp30; |
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219 | tmp74 = tmp71 - tmp68; |
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220 | c_im(inout[2 * iostride]) = tmp73 + tmp74; |
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221 | c_im(inout[6 * iostride]) = tmp74 - tmp73; |
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222 | tmp67 = tmp64 + tmp65; |
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223 | tmp72 = tmp68 + tmp71; |
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224 | c_im(inout[0]) = tmp67 + tmp72; |
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225 | c_im(inout[4 * iostride]) = tmp72 - tmp67; |
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226 | } |
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227 | tmp63 = tmp7 - tmp18; |
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228 | tmp66 = tmp64 - tmp65; |
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229 | c_re(inout[6 * iostride]) = tmp63 - tmp66; |
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230 | c_re(inout[2 * iostride]) = tmp63 + tmp66; |
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231 | { |
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232 | fftw_real tmp59; |
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233 | fftw_real tmp78; |
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234 | fftw_real tmp62; |
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235 | fftw_real tmp75; |
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236 | fftw_real tmp60; |
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237 | fftw_real tmp61; |
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238 | ASSERT_ALIGNED_DOUBLE(); |
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239 | tmp59 = tmp43 - tmp46; |
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240 | tmp78 = tmp76 - tmp77; |
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241 | tmp60 = tmp51 - tmp48; |
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242 | tmp61 = tmp53 + tmp56; |
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243 | tmp62 = K707106781 * (tmp60 - tmp61); |
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244 | tmp75 = K707106781 * (tmp60 + tmp61); |
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245 | c_re(inout[7 * iostride]) = tmp59 - tmp62; |
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246 | c_re(inout[3 * iostride]) = tmp59 + tmp62; |
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247 | c_im(inout[iostride]) = tmp75 + tmp78; |
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248 | c_im(inout[5 * iostride]) = tmp78 - tmp75; |
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249 | } |
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250 | { |
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251 | fftw_real tmp47; |
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252 | fftw_real tmp80; |
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253 | fftw_real tmp58; |
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254 | fftw_real tmp79; |
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255 | fftw_real tmp52; |
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256 | fftw_real tmp57; |
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257 | ASSERT_ALIGNED_DOUBLE(); |
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258 | tmp47 = tmp43 + tmp46; |
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259 | tmp80 = tmp77 + tmp76; |
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260 | tmp52 = tmp48 + tmp51; |
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261 | tmp57 = tmp53 - tmp56; |
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262 | tmp58 = K707106781 * (tmp52 + tmp57); |
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263 | tmp79 = K707106781 * (tmp57 - tmp52); |
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264 | c_re(inout[5 * iostride]) = tmp47 - tmp58; |
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265 | c_re(inout[iostride]) = tmp47 + tmp58; |
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266 | c_im(inout[3 * iostride]) = tmp79 + tmp80; |
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267 | c_im(inout[7 * iostride]) = tmp80 - tmp79; |
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268 | } |
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269 | } |
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270 | } |
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271 | } |
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272 | |||
273 | static const int twiddle_order[] = |
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274 | {1, 2, 3, 4, 5, 6, 7}; |
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275 | fftw_codelet_desc fftw_twiddle_8_desc = |
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276 | { |
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277 | "fftw_twiddle_8", |
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278 | (void (*)()) fftw_twiddle_8, |
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279 | 8, |
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280 | FFTW_FORWARD, |
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281 | FFTW_TWIDDLE, |
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282 | 176, |
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283 | 7, |
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284 | twiddle_order, |
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285 | }; |