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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 13:54:35 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 -real2hc 10 */ |
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27 | |||
28 | /* |
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29 | * This function contains 34 FP additions, 12 FP multiplications, |
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30 | * (or, 28 additions, 6 multiplications, 6 fused multiply/add), |
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31 | * 22 stack variables, and 20 memory accesses |
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32 | */ |
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33 | static const fftw_real K587785252 = FFTW_KONST(+0.587785252292473129168705954639072768597652438); |
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34 | static const fftw_real K951056516 = FFTW_KONST(+0.951056516295153572116439333379382143405698634); |
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35 | static const fftw_real K250000000 = FFTW_KONST(+0.250000000000000000000000000000000000000000000); |
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36 | static const fftw_real K559016994 = FFTW_KONST(+0.559016994374947424102293417182819058860154590); |
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37 | |||
38 | /* |
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39 | * Generator Id's : |
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40 | * $Id: frc_10.c,v 1.1.1.1 2002-03-29 14:12:58 pj Exp $ |
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41 | * $Id: frc_10.c,v 1.1.1.1 2002-03-29 14:12:58 pj Exp $ |
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42 | * $Id: frc_10.c,v 1.1.1.1 2002-03-29 14:12:58 pj Exp $ |
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43 | */ |
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44 | |||
45 | void fftw_real2hc_10(const fftw_real *input, fftw_real *real_output, fftw_real *imag_output, int istride, int real_ostride, int imag_ostride) |
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46 | { |
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47 | fftw_real tmp18; |
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48 | fftw_real tmp29; |
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49 | fftw_real tmp10; |
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50 | fftw_real tmp23; |
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51 | fftw_real tmp13; |
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52 | fftw_real tmp24; |
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53 | fftw_real tmp14; |
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54 | fftw_real tmp31; |
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55 | fftw_real tmp3; |
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56 | fftw_real tmp26; |
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57 | fftw_real tmp6; |
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58 | fftw_real tmp27; |
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59 | fftw_real tmp7; |
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60 | fftw_real tmp30; |
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61 | fftw_real tmp16; |
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62 | fftw_real tmp17; |
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63 | ASSERT_ALIGNED_DOUBLE(); |
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64 | tmp16 = input[0]; |
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65 | tmp17 = input[5 * istride]; |
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66 | tmp18 = tmp16 - tmp17; |
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67 | tmp29 = tmp16 + tmp17; |
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68 | { |
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69 | fftw_real tmp8; |
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70 | fftw_real tmp9; |
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71 | fftw_real tmp11; |
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72 | fftw_real tmp12; |
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73 | ASSERT_ALIGNED_DOUBLE(); |
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74 | tmp8 = input[4 * istride]; |
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75 | tmp9 = input[9 * istride]; |
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76 | tmp10 = tmp8 - tmp9; |
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77 | tmp23 = tmp8 + tmp9; |
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78 | tmp11 = input[6 * istride]; |
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79 | tmp12 = input[istride]; |
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80 | tmp13 = tmp11 - tmp12; |
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81 | tmp24 = tmp11 + tmp12; |
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82 | } |
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83 | tmp14 = tmp10 + tmp13; |
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84 | tmp31 = tmp23 + tmp24; |
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85 | { |
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86 | fftw_real tmp1; |
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87 | fftw_real tmp2; |
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88 | fftw_real tmp4; |
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89 | fftw_real tmp5; |
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90 | ASSERT_ALIGNED_DOUBLE(); |
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91 | tmp1 = input[2 * istride]; |
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92 | tmp2 = input[7 * istride]; |
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93 | tmp3 = tmp1 - tmp2; |
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94 | tmp26 = tmp1 + tmp2; |
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95 | tmp4 = input[8 * istride]; |
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96 | tmp5 = input[3 * istride]; |
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97 | tmp6 = tmp4 - tmp5; |
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98 | tmp27 = tmp4 + tmp5; |
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99 | } |
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100 | tmp7 = tmp3 + tmp6; |
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101 | tmp30 = tmp26 + tmp27; |
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102 | { |
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103 | fftw_real tmp15; |
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104 | fftw_real tmp19; |
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105 | fftw_real tmp20; |
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106 | fftw_real tmp34; |
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107 | fftw_real tmp32; |
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108 | fftw_real tmp33; |
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109 | ASSERT_ALIGNED_DOUBLE(); |
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110 | tmp15 = K559016994 * (tmp7 - tmp14); |
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111 | tmp19 = tmp7 + tmp14; |
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112 | tmp20 = tmp18 - (K250000000 * tmp19); |
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113 | real_output[real_ostride] = tmp15 + tmp20; |
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114 | real_output[3 * real_ostride] = tmp20 - tmp15; |
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115 | real_output[5 * real_ostride] = tmp18 + tmp19; |
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116 | tmp34 = K559016994 * (tmp30 - tmp31); |
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117 | tmp32 = tmp30 + tmp31; |
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118 | tmp33 = tmp29 - (K250000000 * tmp32); |
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119 | real_output[2 * real_ostride] = tmp33 - tmp34; |
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120 | real_output[4 * real_ostride] = tmp34 + tmp33; |
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121 | real_output[0] = tmp29 + tmp32; |
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122 | } |
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123 | { |
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124 | fftw_real tmp21; |
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125 | fftw_real tmp22; |
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126 | fftw_real tmp25; |
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127 | fftw_real tmp28; |
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128 | ASSERT_ALIGNED_DOUBLE(); |
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129 | tmp21 = tmp3 - tmp6; |
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130 | tmp22 = tmp10 - tmp13; |
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131 | imag_output[imag_ostride] = -((K951056516 * tmp21) + (K587785252 * tmp22)); |
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132 | imag_output[3 * imag_ostride] = (K587785252 * tmp21) - (K951056516 * tmp22); |
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133 | tmp25 = tmp23 - tmp24; |
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134 | tmp28 = tmp26 - tmp27; |
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135 | imag_output[2 * imag_ostride] = (K951056516 * tmp25) - (K587785252 * tmp28); |
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136 | imag_output[4 * imag_ostride] = (K951056516 * tmp28) + (K587785252 * tmp25); |
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137 | } |
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138 | } |
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139 | |||
140 | fftw_codelet_desc fftw_real2hc_10_desc = |
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141 | { |
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142 | "fftw_real2hc_10", |
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143 | (void (*)()) fftw_real2hc_10, |
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144 | 10, |
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145 | FFTW_FORWARD, |
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146 | FFTW_REAL2HC, |
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147 | 222, |
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148 | 0, |
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149 | (const int *) 0, |
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150 | }; |