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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 13:54:43 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 -notwiddleinv 4 */ |
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27 | |||
28 | /* |
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29 | * This function contains 16 FP additions, 0 FP multiplications, |
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30 | * (or, 16 additions, 0 multiplications, 0 fused multiply/add), |
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31 | * 12 stack variables, and 16 memory accesses |
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32 | */ |
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33 | |||
34 | /* |
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35 | * Generator Id's : |
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36 | * $Id: fni_4.c,v 1.1.1.1 2002-03-29 14:12:56 pj Exp $ |
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37 | * $Id: fni_4.c,v 1.1.1.1 2002-03-29 14:12:56 pj Exp $ |
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38 | * $Id: fni_4.c,v 1.1.1.1 2002-03-29 14:12:56 pj Exp $ |
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39 | */ |
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40 | |||
41 | void fftwi_no_twiddle_4(const fftw_complex *input, fftw_complex *output, int istride, int ostride) |
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42 | { |
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43 | fftw_real tmp3; |
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44 | fftw_real tmp11; |
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45 | fftw_real tmp10; |
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46 | fftw_real tmp15; |
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47 | fftw_real tmp6; |
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48 | fftw_real tmp7; |
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49 | fftw_real tmp14; |
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50 | fftw_real tmp16; |
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51 | ASSERT_ALIGNED_DOUBLE(); |
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52 | { |
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53 | fftw_real tmp1; |
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54 | fftw_real tmp2; |
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55 | fftw_real tmp8; |
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56 | fftw_real tmp9; |
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57 | ASSERT_ALIGNED_DOUBLE(); |
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58 | tmp1 = c_re(input[0]); |
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59 | tmp2 = c_re(input[2 * istride]); |
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60 | tmp3 = tmp1 + tmp2; |
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61 | tmp11 = tmp1 - tmp2; |
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62 | tmp8 = c_im(input[0]); |
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63 | tmp9 = c_im(input[2 * istride]); |
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64 | tmp10 = tmp8 - tmp9; |
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65 | tmp15 = tmp8 + tmp9; |
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66 | } |
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67 | { |
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68 | fftw_real tmp4; |
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69 | fftw_real tmp5; |
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70 | fftw_real tmp12; |
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71 | fftw_real tmp13; |
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72 | ASSERT_ALIGNED_DOUBLE(); |
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73 | tmp4 = c_re(input[istride]); |
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74 | tmp5 = c_re(input[3 * istride]); |
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75 | tmp6 = tmp4 + tmp5; |
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76 | tmp7 = tmp4 - tmp5; |
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77 | tmp12 = c_im(input[istride]); |
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78 | tmp13 = c_im(input[3 * istride]); |
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79 | tmp14 = tmp12 - tmp13; |
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80 | tmp16 = tmp12 + tmp13; |
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81 | } |
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82 | c_re(output[2 * ostride]) = tmp3 - tmp6; |
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83 | c_re(output[0]) = tmp3 + tmp6; |
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84 | c_im(output[ostride]) = tmp7 + tmp10; |
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85 | c_im(output[3 * ostride]) = tmp10 - tmp7; |
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86 | c_re(output[ostride]) = tmp11 - tmp14; |
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87 | c_re(output[3 * ostride]) = tmp11 + tmp14; |
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88 | c_im(output[2 * ostride]) = tmp15 - tmp16; |
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89 | c_im(output[0]) = tmp15 + tmp16; |
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90 | } |
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91 | |||
92 | fftw_codelet_desc fftwi_no_twiddle_4_desc = |
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93 | { |
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94 | "fftwi_no_twiddle_4", |
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95 | (void (*)()) fftwi_no_twiddle_4, |
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96 | 4, |
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97 | FFTW_BACKWARD, |
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98 | FFTW_NOTW, |
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99 | 100, |
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100 | 0, |
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101 | (const int *) 0, |
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102 | }; |