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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 6 */ |
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27 | |||
28 | /* |
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29 | * This function contains 46 FP additions, 28 FP multiplications, |
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30 | * (or, 32 additions, 14 multiplications, 14 fused multiply/add), |
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31 | * 22 stack variables, and 24 memory accesses |
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32 | */ |
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33 | static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000); |
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34 | static const fftw_real K866025403 = FFTW_KONST(+0.866025403784438646763723170752936183471402627); |
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35 | |||
36 | /* |
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37 | * Generator Id's : |
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38 | * $Id: ftwi_6.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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39 | * $Id: ftwi_6.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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40 | * $Id: ftwi_6.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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41 | */ |
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42 | |||
43 | void fftwi_twiddle_6(fftw_complex *A, const fftw_complex *W, int iostride, int m, int dist) |
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44 | { |
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45 | int i; |
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46 | fftw_complex *inout; |
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47 | inout = A; |
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48 | for (i = m; i > 0; i = i - 1, inout = inout + dist, W = W + 5) { |
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49 | fftw_real tmp7; |
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50 | fftw_real tmp31; |
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51 | fftw_real tmp50; |
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52 | fftw_real tmp54; |
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53 | fftw_real tmp29; |
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54 | fftw_real tmp33; |
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55 | fftw_real tmp38; |
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56 | fftw_real tmp44; |
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57 | fftw_real tmp18; |
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58 | fftw_real tmp32; |
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59 | fftw_real tmp41; |
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60 | fftw_real tmp45; |
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61 | ASSERT_ALIGNED_DOUBLE(); |
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62 | { |
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63 | fftw_real tmp1; |
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64 | fftw_real tmp49; |
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65 | fftw_real tmp6; |
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66 | fftw_real tmp48; |
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67 | ASSERT_ALIGNED_DOUBLE(); |
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68 | tmp1 = c_re(inout[0]); |
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69 | tmp49 = c_im(inout[0]); |
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70 | { |
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71 | fftw_real tmp3; |
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72 | fftw_real tmp5; |
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73 | fftw_real tmp2; |
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74 | fftw_real tmp4; |
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75 | ASSERT_ALIGNED_DOUBLE(); |
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76 | tmp3 = c_re(inout[3 * iostride]); |
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77 | tmp5 = c_im(inout[3 * iostride]); |
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78 | tmp2 = c_re(W[2]); |
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79 | tmp4 = c_im(W[2]); |
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80 | tmp6 = (tmp2 * tmp3) + (tmp4 * tmp5); |
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81 | tmp48 = (tmp2 * tmp5) - (tmp4 * tmp3); |
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82 | } |
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83 | tmp7 = tmp1 - tmp6; |
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84 | tmp31 = tmp1 + tmp6; |
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85 | tmp50 = tmp48 + tmp49; |
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86 | tmp54 = tmp49 - tmp48; |
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87 | } |
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88 | { |
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89 | fftw_real tmp23; |
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90 | fftw_real tmp36; |
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91 | fftw_real tmp28; |
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92 | fftw_real tmp37; |
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93 | ASSERT_ALIGNED_DOUBLE(); |
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94 | { |
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95 | fftw_real tmp20; |
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96 | fftw_real tmp22; |
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97 | fftw_real tmp19; |
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98 | fftw_real tmp21; |
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99 | ASSERT_ALIGNED_DOUBLE(); |
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100 | tmp20 = c_re(inout[4 * iostride]); |
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101 | tmp22 = c_im(inout[4 * iostride]); |
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102 | tmp19 = c_re(W[3]); |
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103 | tmp21 = c_im(W[3]); |
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104 | tmp23 = (tmp19 * tmp20) + (tmp21 * tmp22); |
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105 | tmp36 = (tmp19 * tmp22) - (tmp21 * tmp20); |
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106 | } |
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107 | { |
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108 | fftw_real tmp25; |
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109 | fftw_real tmp27; |
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110 | fftw_real tmp24; |
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111 | fftw_real tmp26; |
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112 | ASSERT_ALIGNED_DOUBLE(); |
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113 | tmp25 = c_re(inout[iostride]); |
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114 | tmp27 = c_im(inout[iostride]); |
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115 | tmp24 = c_re(W[0]); |
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116 | tmp26 = c_im(W[0]); |
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117 | tmp28 = (tmp24 * tmp25) + (tmp26 * tmp27); |
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118 | tmp37 = (tmp24 * tmp27) - (tmp26 * tmp25); |
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119 | } |
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120 | tmp29 = tmp23 - tmp28; |
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121 | tmp33 = tmp23 + tmp28; |
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122 | tmp38 = tmp36 - tmp37; |
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123 | tmp44 = tmp36 + tmp37; |
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124 | } |
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125 | { |
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126 | fftw_real tmp12; |
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127 | fftw_real tmp39; |
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128 | fftw_real tmp17; |
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129 | fftw_real tmp40; |
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130 | ASSERT_ALIGNED_DOUBLE(); |
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131 | { |
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132 | fftw_real tmp9; |
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133 | fftw_real tmp11; |
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134 | fftw_real tmp8; |
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135 | fftw_real tmp10; |
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136 | ASSERT_ALIGNED_DOUBLE(); |
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137 | tmp9 = c_re(inout[2 * iostride]); |
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138 | tmp11 = c_im(inout[2 * iostride]); |
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139 | tmp8 = c_re(W[1]); |
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140 | tmp10 = c_im(W[1]); |
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141 | tmp12 = (tmp8 * tmp9) + (tmp10 * tmp11); |
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142 | tmp39 = (tmp8 * tmp11) - (tmp10 * tmp9); |
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143 | } |
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144 | { |
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145 | fftw_real tmp14; |
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146 | fftw_real tmp16; |
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147 | fftw_real tmp13; |
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148 | fftw_real tmp15; |
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149 | ASSERT_ALIGNED_DOUBLE(); |
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150 | tmp14 = c_re(inout[5 * iostride]); |
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151 | tmp16 = c_im(inout[5 * iostride]); |
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152 | tmp13 = c_re(W[4]); |
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153 | tmp15 = c_im(W[4]); |
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154 | tmp17 = (tmp13 * tmp14) + (tmp15 * tmp16); |
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155 | tmp40 = (tmp13 * tmp16) - (tmp15 * tmp14); |
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156 | } |
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157 | tmp18 = tmp12 - tmp17; |
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158 | tmp32 = tmp12 + tmp17; |
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159 | tmp41 = tmp39 - tmp40; |
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160 | tmp45 = tmp39 + tmp40; |
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161 | } |
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162 | { |
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163 | fftw_real tmp42; |
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164 | fftw_real tmp30; |
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165 | fftw_real tmp35; |
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166 | fftw_real tmp53; |
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167 | fftw_real tmp55; |
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168 | fftw_real tmp56; |
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169 | ASSERT_ALIGNED_DOUBLE(); |
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170 | tmp42 = K866025403 * (tmp38 - tmp41); |
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171 | tmp30 = tmp18 + tmp29; |
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172 | tmp35 = tmp7 - (K500000000 * tmp30); |
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173 | c_re(inout[3 * iostride]) = tmp7 + tmp30; |
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174 | c_re(inout[iostride]) = tmp35 + tmp42; |
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175 | c_re(inout[5 * iostride]) = tmp35 - tmp42; |
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176 | tmp53 = K866025403 * (tmp18 - tmp29); |
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177 | tmp55 = tmp41 + tmp38; |
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178 | tmp56 = tmp54 - (K500000000 * tmp55); |
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179 | c_im(inout[iostride]) = tmp53 + tmp56; |
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180 | c_im(inout[5 * iostride]) = tmp56 - tmp53; |
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181 | c_im(inout[3 * iostride]) = tmp55 + tmp54; |
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182 | } |
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183 | { |
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184 | fftw_real tmp46; |
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185 | fftw_real tmp34; |
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186 | fftw_real tmp43; |
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187 | fftw_real tmp52; |
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188 | fftw_real tmp47; |
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189 | fftw_real tmp51; |
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190 | ASSERT_ALIGNED_DOUBLE(); |
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191 | tmp46 = K866025403 * (tmp44 - tmp45); |
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192 | tmp34 = tmp32 + tmp33; |
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193 | tmp43 = tmp31 - (K500000000 * tmp34); |
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194 | c_re(inout[0]) = tmp31 + tmp34; |
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195 | c_re(inout[4 * iostride]) = tmp43 + tmp46; |
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196 | c_re(inout[2 * iostride]) = tmp43 - tmp46; |
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197 | tmp52 = K866025403 * (tmp32 - tmp33); |
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198 | tmp47 = tmp45 + tmp44; |
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199 | tmp51 = tmp50 - (K500000000 * tmp47); |
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200 | c_im(inout[0]) = tmp47 + tmp50; |
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201 | c_im(inout[4 * iostride]) = tmp52 + tmp51; |
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202 | c_im(inout[2 * iostride]) = tmp51 - tmp52; |
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203 | } |
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204 | } |
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205 | } |
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206 | |||
207 | static const int twiddle_order[] = |
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208 | {1, 2, 3, 4, 5}; |
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209 | fftw_codelet_desc fftwi_twiddle_6_desc = |
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210 | { |
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211 | "fftwi_twiddle_6", |
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212 | (void (*)()) fftwi_twiddle_6, |
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213 | 6, |
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214 | FFTW_BACKWARD, |
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215 | FFTW_TWIDDLE, |
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216 | 143, |
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217 | 5, |
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218 | twiddle_order, |
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219 | }; |