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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 13:54:27 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 -notwiddle 8 */ |
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27 | |||
28 | /* |
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29 | * This function contains 52 FP additions, 4 FP multiplications, |
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30 | * (or, 52 additions, 4 multiplications, 0 fused multiply/add), |
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31 | * 26 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: fn_8.c,v 1.1.1.1 2002-03-29 14:12:56 pj Exp $ |
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38 | * $Id: fn_8.c,v 1.1.1.1 2002-03-29 14:12:56 pj Exp $ |
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39 | * $Id: fn_8.c,v 1.1.1.1 2002-03-29 14:12:56 pj Exp $ |
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40 | */ |
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41 | |||
42 | void fftw_no_twiddle_8(const fftw_complex *input, fftw_complex *output, int istride, int ostride) |
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43 | { |
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44 | fftw_real tmp3; |
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45 | fftw_real tmp23; |
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46 | fftw_real tmp18; |
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47 | fftw_real tmp38; |
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48 | fftw_real tmp6; |
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49 | fftw_real tmp37; |
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50 | fftw_real tmp21; |
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51 | fftw_real tmp24; |
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52 | fftw_real tmp13; |
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53 | fftw_real tmp49; |
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54 | fftw_real tmp35; |
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55 | fftw_real tmp43; |
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56 | fftw_real tmp10; |
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57 | fftw_real tmp48; |
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58 | fftw_real tmp30; |
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59 | fftw_real tmp42; |
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60 | ASSERT_ALIGNED_DOUBLE(); |
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61 | { |
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62 | fftw_real tmp1; |
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63 | fftw_real tmp2; |
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64 | fftw_real tmp19; |
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65 | fftw_real tmp20; |
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66 | ASSERT_ALIGNED_DOUBLE(); |
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67 | tmp1 = c_re(input[0]); |
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68 | tmp2 = c_re(input[4 * istride]); |
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69 | tmp3 = tmp1 + tmp2; |
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70 | tmp23 = tmp1 - tmp2; |
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71 | { |
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72 | fftw_real tmp16; |
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73 | fftw_real tmp17; |
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74 | fftw_real tmp4; |
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75 | fftw_real tmp5; |
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76 | ASSERT_ALIGNED_DOUBLE(); |
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77 | tmp16 = c_im(input[0]); |
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78 | tmp17 = c_im(input[4 * istride]); |
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79 | tmp18 = tmp16 + tmp17; |
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80 | tmp38 = tmp16 - tmp17; |
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81 | tmp4 = c_re(input[2 * istride]); |
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82 | tmp5 = c_re(input[6 * istride]); |
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83 | tmp6 = tmp4 + tmp5; |
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84 | tmp37 = tmp4 - tmp5; |
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85 | } |
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86 | tmp19 = c_im(input[2 * istride]); |
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87 | tmp20 = c_im(input[6 * istride]); |
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88 | tmp21 = tmp19 + tmp20; |
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89 | tmp24 = tmp19 - tmp20; |
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90 | { |
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91 | fftw_real tmp11; |
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92 | fftw_real tmp12; |
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93 | fftw_real tmp31; |
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94 | fftw_real tmp32; |
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95 | fftw_real tmp33; |
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96 | fftw_real tmp34; |
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97 | ASSERT_ALIGNED_DOUBLE(); |
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98 | tmp11 = c_re(input[7 * istride]); |
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99 | tmp12 = c_re(input[3 * istride]); |
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100 | tmp31 = tmp11 - tmp12; |
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101 | tmp32 = c_im(input[7 * istride]); |
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102 | tmp33 = c_im(input[3 * istride]); |
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103 | tmp34 = tmp32 - tmp33; |
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104 | tmp13 = tmp11 + tmp12; |
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105 | tmp49 = tmp32 + tmp33; |
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106 | tmp35 = tmp31 - tmp34; |
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107 | tmp43 = tmp31 + tmp34; |
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108 | } |
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109 | { |
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110 | fftw_real tmp8; |
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111 | fftw_real tmp9; |
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112 | fftw_real tmp26; |
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113 | fftw_real tmp27; |
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114 | fftw_real tmp28; |
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115 | fftw_real tmp29; |
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116 | ASSERT_ALIGNED_DOUBLE(); |
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117 | tmp8 = c_re(input[istride]); |
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118 | tmp9 = c_re(input[5 * istride]); |
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119 | tmp26 = tmp8 - tmp9; |
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120 | tmp27 = c_im(input[istride]); |
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121 | tmp28 = c_im(input[5 * istride]); |
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122 | tmp29 = tmp27 - tmp28; |
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123 | tmp10 = tmp8 + tmp9; |
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124 | tmp48 = tmp27 + tmp28; |
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125 | tmp30 = tmp26 + tmp29; |
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126 | tmp42 = tmp29 - tmp26; |
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127 | } |
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128 | } |
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129 | { |
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130 | fftw_real tmp7; |
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131 | fftw_real tmp14; |
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132 | fftw_real tmp15; |
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133 | fftw_real tmp22; |
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134 | ASSERT_ALIGNED_DOUBLE(); |
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135 | tmp7 = tmp3 + tmp6; |
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136 | tmp14 = tmp10 + tmp13; |
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137 | c_re(output[4 * ostride]) = tmp7 - tmp14; |
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138 | c_re(output[0]) = tmp7 + tmp14; |
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139 | tmp15 = tmp13 - tmp10; |
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140 | tmp22 = tmp18 - tmp21; |
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141 | c_im(output[2 * ostride]) = tmp15 + tmp22; |
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142 | c_im(output[6 * ostride]) = tmp22 - tmp15; |
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143 | } |
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144 | { |
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145 | fftw_real tmp51; |
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146 | fftw_real tmp52; |
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147 | fftw_real tmp47; |
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148 | fftw_real tmp50; |
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149 | ASSERT_ALIGNED_DOUBLE(); |
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150 | tmp51 = tmp18 + tmp21; |
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151 | tmp52 = tmp48 + tmp49; |
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152 | c_im(output[4 * ostride]) = tmp51 - tmp52; |
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153 | c_im(output[0]) = tmp51 + tmp52; |
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154 | tmp47 = tmp3 - tmp6; |
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155 | tmp50 = tmp48 - tmp49; |
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156 | c_re(output[6 * ostride]) = tmp47 - tmp50; |
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157 | c_re(output[2 * ostride]) = tmp47 + tmp50; |
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158 | } |
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159 | { |
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160 | fftw_real tmp25; |
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161 | fftw_real tmp36; |
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162 | fftw_real tmp39; |
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163 | fftw_real tmp40; |
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164 | ASSERT_ALIGNED_DOUBLE(); |
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165 | tmp25 = tmp23 + tmp24; |
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166 | tmp36 = K707106781 * (tmp30 + tmp35); |
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167 | c_re(output[5 * ostride]) = tmp25 - tmp36; |
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168 | c_re(output[ostride]) = tmp25 + tmp36; |
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169 | tmp39 = tmp37 + tmp38; |
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170 | tmp40 = K707106781 * (tmp35 - tmp30); |
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171 | c_im(output[7 * ostride]) = tmp39 - tmp40; |
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172 | c_im(output[3 * ostride]) = tmp39 + tmp40; |
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173 | } |
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174 | { |
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175 | fftw_real tmp45; |
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176 | fftw_real tmp46; |
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177 | fftw_real tmp41; |
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178 | fftw_real tmp44; |
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179 | ASSERT_ALIGNED_DOUBLE(); |
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180 | tmp45 = tmp38 - tmp37; |
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181 | tmp46 = K707106781 * (tmp42 + tmp43); |
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182 | c_im(output[5 * ostride]) = tmp45 - tmp46; |
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183 | c_im(output[ostride]) = tmp45 + tmp46; |
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184 | tmp41 = tmp23 - tmp24; |
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185 | tmp44 = K707106781 * (tmp42 - tmp43); |
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186 | c_re(output[7 * ostride]) = tmp41 - tmp44; |
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187 | c_re(output[3 * ostride]) = tmp41 + tmp44; |
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188 | } |
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189 | } |
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190 | |||
191 | fftw_codelet_desc fftw_no_twiddle_8_desc = |
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192 | { |
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193 | "fftw_no_twiddle_8", |
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194 | (void (*)()) fftw_no_twiddle_8, |
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195 | 8, |
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196 | FFTW_FORWARD, |
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197 | FFTW_NOTW, |
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198 | 177, |
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199 | 0, |
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200 | (const int *) 0, |
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201 | }; |