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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 13:55:47 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 -twiddleinv 5 */ |
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27 | |||
28 | /* |
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29 | * This function contains 40 FP additions, 28 FP multiplications, |
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30 | * (or, 26 additions, 14 multiplications, 14 fused multiply/add), |
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31 | * 26 stack variables, and 20 memory accesses |
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32 | */ |
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33 | static const fftw_real K559016994 = FFTW_KONST(+0.559016994374947424102293417182819058860154590); |
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34 | static const fftw_real K250000000 = FFTW_KONST(+0.250000000000000000000000000000000000000000000); |
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35 | static const fftw_real K951056516 = FFTW_KONST(+0.951056516295153572116439333379382143405698634); |
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36 | static const fftw_real K587785252 = FFTW_KONST(+0.587785252292473129168705954639072768597652438); |
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37 | |||
38 | /* |
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39 | * Generator Id's : |
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40 | * $Id: ftwi_5.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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41 | * $Id: ftwi_5.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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42 | * $Id: ftwi_5.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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43 | */ |
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44 | |||
45 | void fftwi_twiddle_5(fftw_complex *A, const fftw_complex *W, int iostride, int m, int dist) |
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46 | { |
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47 | int i; |
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48 | fftw_complex *inout; |
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49 | inout = A; |
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50 | for (i = m; i > 0; i = i - 1, inout = inout + dist, W = W + 4) { |
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51 | fftw_real tmp1; |
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52 | fftw_real tmp40; |
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53 | fftw_real tmp30; |
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54 | fftw_real tmp33; |
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55 | fftw_real tmp37; |
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56 | fftw_real tmp38; |
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57 | fftw_real tmp39; |
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58 | fftw_real tmp42; |
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59 | fftw_real tmp41; |
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60 | fftw_real tmp12; |
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61 | fftw_real tmp23; |
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62 | fftw_real tmp24; |
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63 | ASSERT_ALIGNED_DOUBLE(); |
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64 | tmp1 = c_re(inout[0]); |
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65 | tmp40 = c_im(inout[0]); |
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66 | { |
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67 | fftw_real tmp6; |
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68 | fftw_real tmp28; |
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69 | fftw_real tmp22; |
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70 | fftw_real tmp32; |
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71 | fftw_real tmp11; |
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72 | fftw_real tmp29; |
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73 | fftw_real tmp17; |
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74 | fftw_real tmp31; |
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75 | ASSERT_ALIGNED_DOUBLE(); |
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76 | { |
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77 | fftw_real tmp3; |
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78 | fftw_real tmp5; |
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79 | fftw_real tmp2; |
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80 | fftw_real tmp4; |
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81 | ASSERT_ALIGNED_DOUBLE(); |
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82 | tmp3 = c_re(inout[iostride]); |
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83 | tmp5 = c_im(inout[iostride]); |
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84 | tmp2 = c_re(W[0]); |
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85 | tmp4 = c_im(W[0]); |
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86 | tmp6 = (tmp2 * tmp3) + (tmp4 * tmp5); |
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87 | tmp28 = (tmp2 * tmp5) - (tmp4 * tmp3); |
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88 | } |
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89 | { |
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90 | fftw_real tmp19; |
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91 | fftw_real tmp21; |
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92 | fftw_real tmp18; |
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93 | fftw_real tmp20; |
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94 | ASSERT_ALIGNED_DOUBLE(); |
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95 | tmp19 = c_re(inout[3 * iostride]); |
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96 | tmp21 = c_im(inout[3 * iostride]); |
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97 | tmp18 = c_re(W[2]); |
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98 | tmp20 = c_im(W[2]); |
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99 | tmp22 = (tmp18 * tmp19) + (tmp20 * tmp21); |
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100 | tmp32 = (tmp18 * tmp21) - (tmp20 * tmp19); |
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101 | } |
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102 | { |
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103 | fftw_real tmp8; |
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104 | fftw_real tmp10; |
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105 | fftw_real tmp7; |
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106 | fftw_real tmp9; |
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107 | ASSERT_ALIGNED_DOUBLE(); |
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108 | tmp8 = c_re(inout[4 * iostride]); |
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109 | tmp10 = c_im(inout[4 * iostride]); |
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110 | tmp7 = c_re(W[3]); |
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111 | tmp9 = c_im(W[3]); |
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112 | tmp11 = (tmp7 * tmp8) + (tmp9 * tmp10); |
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113 | tmp29 = (tmp7 * tmp10) - (tmp9 * tmp8); |
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114 | } |
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115 | { |
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116 | fftw_real tmp14; |
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117 | fftw_real tmp16; |
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118 | fftw_real tmp13; |
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119 | fftw_real tmp15; |
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120 | ASSERT_ALIGNED_DOUBLE(); |
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121 | tmp14 = c_re(inout[2 * iostride]); |
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122 | tmp16 = c_im(inout[2 * iostride]); |
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123 | tmp13 = c_re(W[1]); |
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124 | tmp15 = c_im(W[1]); |
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125 | tmp17 = (tmp13 * tmp14) + (tmp15 * tmp16); |
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126 | tmp31 = (tmp13 * tmp16) - (tmp15 * tmp14); |
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127 | } |
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128 | tmp30 = tmp28 - tmp29; |
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129 | tmp33 = tmp31 - tmp32; |
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130 | tmp37 = tmp28 + tmp29; |
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131 | tmp38 = tmp31 + tmp32; |
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132 | tmp39 = tmp37 + tmp38; |
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133 | tmp42 = tmp17 - tmp22; |
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134 | tmp41 = tmp6 - tmp11; |
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135 | tmp12 = tmp6 + tmp11; |
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136 | tmp23 = tmp17 + tmp22; |
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137 | tmp24 = tmp12 + tmp23; |
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138 | } |
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139 | c_re(inout[0]) = tmp1 + tmp24; |
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140 | { |
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141 | fftw_real tmp34; |
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142 | fftw_real tmp36; |
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143 | fftw_real tmp27; |
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144 | fftw_real tmp35; |
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145 | fftw_real tmp25; |
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146 | fftw_real tmp26; |
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147 | ASSERT_ALIGNED_DOUBLE(); |
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148 | tmp34 = (K587785252 * tmp30) - (K951056516 * tmp33); |
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149 | tmp36 = (K951056516 * tmp30) + (K587785252 * tmp33); |
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150 | tmp25 = tmp1 - (K250000000 * tmp24); |
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151 | tmp26 = K559016994 * (tmp12 - tmp23); |
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152 | tmp27 = tmp25 - tmp26; |
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153 | tmp35 = tmp26 + tmp25; |
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154 | c_re(inout[2 * iostride]) = tmp27 - tmp34; |
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155 | c_re(inout[3 * iostride]) = tmp27 + tmp34; |
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156 | c_re(inout[iostride]) = tmp35 - tmp36; |
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157 | c_re(inout[4 * iostride]) = tmp35 + tmp36; |
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158 | } |
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159 | c_im(inout[0]) = tmp39 + tmp40; |
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160 | { |
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161 | fftw_real tmp43; |
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162 | fftw_real tmp47; |
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163 | fftw_real tmp46; |
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164 | fftw_real tmp48; |
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165 | fftw_real tmp44; |
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166 | fftw_real tmp45; |
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167 | ASSERT_ALIGNED_DOUBLE(); |
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168 | tmp43 = (K951056516 * tmp41) + (K587785252 * tmp42); |
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169 | tmp47 = (K587785252 * tmp41) - (K951056516 * tmp42); |
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170 | tmp44 = K559016994 * (tmp37 - tmp38); |
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171 | tmp45 = tmp40 - (K250000000 * tmp39); |
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172 | tmp46 = tmp44 + tmp45; |
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173 | tmp48 = tmp45 - tmp44; |
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174 | c_im(inout[iostride]) = tmp43 + tmp46; |
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175 | c_im(inout[4 * iostride]) = tmp46 - tmp43; |
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176 | c_im(inout[2 * iostride]) = tmp47 + tmp48; |
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177 | c_im(inout[3 * iostride]) = tmp48 - tmp47; |
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178 | } |
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179 | } |
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180 | } |
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181 | |||
182 | static const int twiddle_order[] = |
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183 | {1, 2, 3, 4}; |
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184 | fftw_codelet_desc fftwi_twiddle_5_desc = |
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185 | { |
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186 | "fftwi_twiddle_5", |
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187 | (void (*)()) fftwi_twiddle_5, |
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188 | 5, |
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189 | FFTW_BACKWARD, |
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190 | FFTW_TWIDDLE, |
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191 | 121, |
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192 | 4, |
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193 | twiddle_order, |
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194 | }; |