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| Rev | Author | Line No. | Line |
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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 13:55:06 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 7 */ |
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| 27 | |||
| 28 | /* |
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| 29 | * This function contains 24 FP additions, 19 FP multiplications, |
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| 30 | * (or, 23 additions, 18 multiplications, 1 fused multiply/add), |
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| 31 | * 13 stack variables, and 14 memory accesses |
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| 32 | */ |
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| 33 | static const fftw_real K2_000000000 = FFTW_KONST(+2.000000000000000000000000000000000000000000000); |
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| 34 | static const fftw_real K1_801937735 = FFTW_KONST(+1.801937735804838252472204639014890102331838324); |
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| 35 | static const fftw_real K445041867 = FFTW_KONST(+0.445041867912628808577805128993589518932711138); |
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| 36 | static const fftw_real K1_246979603 = FFTW_KONST(+1.246979603717467061050009768008479621264549462); |
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| 37 | static const fftw_real K867767478 = FFTW_KONST(+0.867767478235116240951536665696717509219981456); |
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| 38 | static const fftw_real K1_949855824 = FFTW_KONST(+1.949855824363647214036263365987862434465571601); |
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| 39 | static const fftw_real K1_563662964 = FFTW_KONST(+1.563662964936059617416889053348115500464669037); |
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| 40 | |||
| 41 | /* |
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| 42 | * Generator Id's : |
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| 43 | * $Id: fcr_7.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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| 44 | * $Id: fcr_7.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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| 45 | * $Id: fcr_7.c,v 1.1.1.1 2002-03-29 14:12:57 pj Exp $ |
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| 46 | */ |
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| 47 | |||
| 48 | void fftw_hc2real_7(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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| 49 | { |
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| 50 | fftw_real tmp9; |
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| 51 | fftw_real tmp13; |
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| 52 | fftw_real tmp11; |
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| 53 | fftw_real tmp1; |
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| 54 | fftw_real tmp4; |
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| 55 | fftw_real tmp2; |
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| 56 | fftw_real tmp3; |
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| 57 | fftw_real tmp5; |
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| 58 | fftw_real tmp12; |
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| 59 | fftw_real tmp10; |
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| 60 | fftw_real tmp6; |
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| 61 | fftw_real tmp8; |
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| 62 | fftw_real tmp7; |
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| 63 | ASSERT_ALIGNED_DOUBLE(); |
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| 64 | tmp6 = imag_input[2 * imag_istride]; |
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| 65 | tmp8 = imag_input[imag_istride]; |
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| 66 | tmp7 = imag_input[3 * imag_istride]; |
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| 67 | tmp9 = (K1_563662964 * tmp6) - (K1_949855824 * tmp7) - (K867767478 * tmp8); |
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| 68 | tmp13 = (K867767478 * tmp6) + (K1_563662964 * tmp7) - (K1_949855824 * tmp8); |
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| 69 | tmp11 = (K1_563662964 * tmp8) + (K1_949855824 * tmp6) + (K867767478 * tmp7); |
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| 70 | tmp1 = real_input[0]; |
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| 71 | tmp4 = real_input[3 * real_istride]; |
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| 72 | tmp2 = real_input[real_istride]; |
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| 73 | tmp3 = real_input[2 * real_istride]; |
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| 74 | tmp5 = tmp1 + (K1_246979603 * tmp3) - (K445041867 * tmp4) - (K1_801937735 * tmp2); |
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| 75 | tmp12 = tmp1 + (K1_246979603 * tmp4) - (K1_801937735 * tmp3) - (K445041867 * tmp2); |
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| 76 | tmp10 = tmp1 + (K1_246979603 * tmp2) - (K1_801937735 * tmp4) - (K445041867 * tmp3); |
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| 77 | output[4 * ostride] = tmp5 - tmp9; |
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| 78 | output[3 * ostride] = tmp5 + tmp9; |
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| 79 | output[0] = tmp1 + (K2_000000000 * (tmp2 + tmp3 + tmp4)); |
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| 80 | output[2 * ostride] = tmp12 + tmp13; |
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| 81 | output[5 * ostride] = tmp12 - tmp13; |
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| 82 | output[6 * ostride] = tmp10 + tmp11; |
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| 83 | output[ostride] = tmp10 - tmp11; |
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| 84 | } |
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| 85 | |||
| 86 | fftw_codelet_desc fftw_hc2real_7_desc = |
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| 87 | { |
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| 88 | "fftw_hc2real_7", |
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| 89 | (void (*)()) fftw_hc2real_7, |
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| 90 | 7, |
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| 91 | FFTW_BACKWARD, |
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| 92 | FFTW_HC2REAL, |
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| 93 | 169, |
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| 94 | 0, |
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| 95 | (const int *) 0, |
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| 96 | }; |