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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 13:55:11 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 -hc2real 16 */ |
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27 | |||
28 | /* |
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29 | * This function contains 58 FP additions, 18 FP multiplications, |
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30 | * (or, 54 additions, 14 multiplications, 4 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 K765366864 = FFTW_KONST(+0.765366864730179543456919968060797733522689125); |
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34 | static const fftw_real K1_847759065 = FFTW_KONST(+1.847759065022573512256366378793576573644833252); |
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35 | static const fftw_real K1_414213562 = FFTW_KONST(+1.414213562373095048801688724209698078569671875); |
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36 | static const fftw_real K2_000000000 = FFTW_KONST(+2.000000000000000000000000000000000000000000000); |
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37 | |||
38 | /* |
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39 | * Generator Id's : |
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40 | * $Id: fcr_16.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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41 | * $Id: fcr_16.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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42 | * $Id: fcr_16.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 fftw_hc2real_16(const fftw_real *real_input, const fftw_real *imag_input, fftw_real *output, int real_istride, int imag_istride, int ostride) |
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46 | { |
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47 | fftw_real tmp9; |
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48 | fftw_real tmp54; |
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49 | fftw_real tmp42; |
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50 | fftw_real tmp21; |
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51 | fftw_real tmp6; |
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52 | fftw_real tmp18; |
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53 | fftw_real tmp39; |
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54 | fftw_real tmp53; |
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55 | fftw_real tmp13; |
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56 | fftw_real tmp29; |
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57 | fftw_real tmp16; |
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58 | fftw_real tmp26; |
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59 | fftw_real tmp23; |
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60 | fftw_real tmp49; |
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61 | fftw_real tmp57; |
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62 | fftw_real tmp56; |
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63 | fftw_real tmp46; |
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64 | fftw_real tmp30; |
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65 | ASSERT_ALIGNED_DOUBLE(); |
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66 | { |
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67 | fftw_real tmp7; |
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68 | fftw_real tmp8; |
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69 | fftw_real tmp40; |
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70 | fftw_real tmp19; |
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71 | fftw_real tmp20; |
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72 | fftw_real tmp41; |
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73 | ASSERT_ALIGNED_DOUBLE(); |
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74 | tmp7 = real_input[2 * real_istride]; |
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75 | tmp8 = real_input[6 * real_istride]; |
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76 | tmp40 = tmp7 - tmp8; |
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77 | tmp19 = imag_input[2 * imag_istride]; |
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78 | tmp20 = imag_input[6 * imag_istride]; |
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79 | tmp41 = tmp20 + tmp19; |
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80 | tmp9 = K2_000000000 * (tmp7 + tmp8); |
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81 | tmp54 = K1_414213562 * (tmp40 + tmp41); |
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82 | tmp42 = K1_414213562 * (tmp40 - tmp41); |
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83 | tmp21 = K2_000000000 * (tmp19 - tmp20); |
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84 | } |
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85 | { |
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86 | fftw_real tmp5; |
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87 | fftw_real tmp38; |
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88 | fftw_real tmp3; |
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89 | fftw_real tmp36; |
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90 | ASSERT_ALIGNED_DOUBLE(); |
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91 | { |
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92 | fftw_real tmp4; |
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93 | fftw_real tmp37; |
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94 | fftw_real tmp1; |
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95 | fftw_real tmp2; |
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96 | ASSERT_ALIGNED_DOUBLE(); |
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97 | tmp4 = real_input[4 * real_istride]; |
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98 | tmp5 = K2_000000000 * tmp4; |
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99 | tmp37 = imag_input[4 * imag_istride]; |
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100 | tmp38 = K2_000000000 * tmp37; |
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101 | tmp1 = real_input[0]; |
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102 | tmp2 = real_input[8 * real_istride]; |
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103 | tmp3 = tmp1 + tmp2; |
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104 | tmp36 = tmp1 - tmp2; |
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105 | } |
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106 | tmp6 = tmp3 + tmp5; |
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107 | tmp18 = tmp3 - tmp5; |
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108 | tmp39 = tmp36 - tmp38; |
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109 | tmp53 = tmp36 + tmp38; |
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110 | } |
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111 | { |
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112 | fftw_real tmp44; |
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113 | fftw_real tmp48; |
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114 | fftw_real tmp47; |
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115 | fftw_real tmp45; |
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116 | ASSERT_ALIGNED_DOUBLE(); |
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117 | { |
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118 | fftw_real tmp11; |
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119 | fftw_real tmp12; |
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120 | fftw_real tmp27; |
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121 | fftw_real tmp28; |
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122 | ASSERT_ALIGNED_DOUBLE(); |
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123 | tmp11 = real_input[real_istride]; |
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124 | tmp12 = real_input[7 * real_istride]; |
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125 | tmp13 = tmp11 + tmp12; |
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126 | tmp44 = tmp11 - tmp12; |
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127 | tmp27 = imag_input[imag_istride]; |
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128 | tmp28 = imag_input[7 * imag_istride]; |
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129 | tmp29 = tmp27 - tmp28; |
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130 | tmp48 = tmp27 + tmp28; |
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131 | } |
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132 | { |
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133 | fftw_real tmp14; |
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134 | fftw_real tmp15; |
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135 | fftw_real tmp24; |
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136 | fftw_real tmp25; |
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137 | ASSERT_ALIGNED_DOUBLE(); |
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138 | tmp14 = real_input[3 * real_istride]; |
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139 | tmp15 = real_input[5 * real_istride]; |
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140 | tmp16 = tmp14 + tmp15; |
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141 | tmp47 = tmp15 - tmp14; |
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142 | tmp24 = imag_input[3 * imag_istride]; |
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143 | tmp25 = imag_input[5 * imag_istride]; |
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144 | tmp26 = tmp24 - tmp25; |
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145 | tmp45 = tmp25 + tmp24; |
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146 | } |
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147 | tmp23 = tmp13 - tmp16; |
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148 | tmp49 = tmp47 + tmp48; |
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149 | tmp57 = tmp48 - tmp47; |
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150 | tmp56 = tmp44 + tmp45; |
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151 | tmp46 = tmp44 - tmp45; |
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152 | tmp30 = tmp26 + tmp29; |
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153 | } |
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154 | { |
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155 | fftw_real tmp10; |
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156 | fftw_real tmp17; |
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157 | fftw_real tmp34; |
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158 | fftw_real tmp35; |
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159 | ASSERT_ALIGNED_DOUBLE(); |
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160 | tmp10 = tmp6 + tmp9; |
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161 | tmp17 = K2_000000000 * (tmp13 + tmp16); |
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162 | output[8 * ostride] = tmp10 - tmp17; |
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163 | output[0] = tmp10 + tmp17; |
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164 | tmp34 = tmp6 - tmp9; |
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165 | tmp35 = K2_000000000 * (tmp29 - tmp26); |
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166 | output[4 * ostride] = tmp34 - tmp35; |
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167 | output[12 * ostride] = tmp34 + tmp35; |
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168 | } |
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169 | { |
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170 | fftw_real tmp22; |
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171 | fftw_real tmp31; |
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172 | fftw_real tmp32; |
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173 | fftw_real tmp33; |
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174 | ASSERT_ALIGNED_DOUBLE(); |
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175 | tmp22 = tmp18 - tmp21; |
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176 | tmp31 = K1_414213562 * (tmp23 - tmp30); |
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177 | output[10 * ostride] = tmp22 - tmp31; |
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178 | output[2 * ostride] = tmp22 + tmp31; |
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179 | tmp32 = tmp18 + tmp21; |
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180 | tmp33 = K1_414213562 * (tmp23 + tmp30); |
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181 | output[6 * ostride] = tmp32 - tmp33; |
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182 | output[14 * ostride] = tmp32 + tmp33; |
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183 | } |
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184 | { |
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185 | fftw_real tmp43; |
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186 | fftw_real tmp50; |
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187 | fftw_real tmp51; |
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188 | fftw_real tmp52; |
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189 | ASSERT_ALIGNED_DOUBLE(); |
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190 | tmp43 = tmp39 + tmp42; |
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191 | tmp50 = (K1_847759065 * tmp46) - (K765366864 * tmp49); |
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192 | output[9 * ostride] = tmp43 - tmp50; |
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193 | output[ostride] = tmp43 + tmp50; |
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194 | tmp51 = tmp39 - tmp42; |
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195 | tmp52 = (K765366864 * tmp46) + (K1_847759065 * tmp49); |
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196 | output[5 * ostride] = tmp51 - tmp52; |
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197 | output[13 * ostride] = tmp51 + tmp52; |
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198 | } |
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199 | { |
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200 | fftw_real tmp55; |
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201 | fftw_real tmp58; |
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202 | fftw_real tmp59; |
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203 | fftw_real tmp60; |
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204 | ASSERT_ALIGNED_DOUBLE(); |
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205 | tmp55 = tmp53 - tmp54; |
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206 | tmp58 = (K765366864 * tmp56) - (K1_847759065 * tmp57); |
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207 | output[11 * ostride] = tmp55 - tmp58; |
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208 | output[3 * ostride] = tmp55 + tmp58; |
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209 | tmp59 = tmp53 + tmp54; |
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210 | tmp60 = (K1_847759065 * tmp56) + (K765366864 * tmp57); |
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211 | output[7 * ostride] = tmp59 - tmp60; |
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212 | output[15 * ostride] = tmp59 + tmp60; |
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213 | } |
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214 | } |
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215 | |||
216 | fftw_codelet_desc fftw_hc2real_16_desc = |
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217 | { |
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218 | "fftw_hc2real_16", |
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219 | (void (*)()) fftw_hc2real_16, |
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220 | 16, |
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221 | FFTW_BACKWARD, |
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222 | FFTW_HC2REAL, |
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223 | 367, |
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224 | 0, |
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225 | (const int *) 0, |
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226 | }; |