Rev 107 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* |
| 2 | * Copyright (c) 1997-1999 Massachusetts Institute of Technology |
||
| 3 | * |
||
| 4 | * This program is free software; you can redistribute it and/or modify |
||
| 5 | * it under the terms of the GNU General Public License as published by |
||
| 6 | * the Free Software Foundation; either version 2 of the License, or |
||
| 7 | * (at your option) any later version. |
||
| 8 | * |
||
| 9 | * This program is distributed in the hope that it will be useful, |
||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
| 12 | * GNU General Public License for more details. |
||
| 13 | * |
||
| 14 | * You should have received a copy of the GNU General Public License |
||
| 15 | * along with this program; if not, write to the Free Software |
||
| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||
| 17 | * |
||
| 18 | */ |
||
| 19 | |||
| 20 | /* This file was automatically generated --- DO NOT EDIT */ |
||
| 21 | /* Generated on Tue May 18 13:54:43 EDT 1999 */ |
||
| 22 | |||
| 107 | pj | 23 | #include <fftw-int.h> |
| 24 | #include <fftw.h> |
||
| 2 | pj | 25 | |
| 26 | /* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -notwiddleinv 3 */ |
||
| 27 | |||
| 28 | /* |
||
| 29 | * This function contains 12 FP additions, 4 FP multiplications, |
||
| 30 | * (or, 10 additions, 2 multiplications, 2 fused multiply/add), |
||
| 31 | * 12 stack variables, and 12 memory accesses |
||
| 32 | */ |
||
| 33 | static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000); |
||
| 34 | static const fftw_real K866025403 = FFTW_KONST(+0.866025403784438646763723170752936183471402627); |
||
| 35 | |||
| 36 | /* |
||
| 37 | * Generator Id's : |
||
| 107 | pj | 38 | * $Id: fni_3.c,v 1.2 2003-03-24 11:14:51 pj Exp $ |
| 39 | * $Id: fni_3.c,v 1.2 2003-03-24 11:14:51 pj Exp $ |
||
| 40 | * $Id: fni_3.c,v 1.2 2003-03-24 11:14:51 pj Exp $ |
||
| 2 | pj | 41 | */ |
| 42 | |||
| 43 | void fftwi_no_twiddle_3(const fftw_complex *input, fftw_complex *output, int istride, int ostride) |
||
| 44 | { |
||
| 45 | fftw_real tmp1; |
||
| 46 | fftw_real tmp6; |
||
| 47 | fftw_real tmp4; |
||
| 48 | fftw_real tmp5; |
||
| 49 | fftw_real tmp9; |
||
| 50 | fftw_real tmp12; |
||
| 51 | fftw_real tmp11; |
||
| 52 | fftw_real tmp10; |
||
| 53 | ASSERT_ALIGNED_DOUBLE(); |
||
| 54 | tmp1 = c_re(input[0]); |
||
| 55 | tmp6 = c_im(input[0]); |
||
| 56 | { |
||
| 57 | fftw_real tmp2; |
||
| 58 | fftw_real tmp3; |
||
| 59 | fftw_real tmp7; |
||
| 60 | fftw_real tmp8; |
||
| 61 | ASSERT_ALIGNED_DOUBLE(); |
||
| 62 | tmp2 = c_re(input[istride]); |
||
| 63 | tmp3 = c_re(input[2 * istride]); |
||
| 64 | tmp4 = tmp2 + tmp3; |
||
| 65 | tmp5 = K866025403 * (tmp2 - tmp3); |
||
| 66 | tmp7 = c_im(input[istride]); |
||
| 67 | tmp8 = c_im(input[2 * istride]); |
||
| 68 | tmp9 = tmp7 + tmp8; |
||
| 69 | tmp12 = K866025403 * (tmp8 - tmp7); |
||
| 70 | } |
||
| 71 | c_re(output[0]) = tmp1 + tmp4; |
||
| 72 | tmp11 = tmp1 - (K500000000 * tmp4); |
||
| 73 | c_re(output[2 * ostride]) = tmp11 - tmp12; |
||
| 74 | c_re(output[ostride]) = tmp11 + tmp12; |
||
| 75 | c_im(output[0]) = tmp6 + tmp9; |
||
| 76 | tmp10 = tmp6 - (K500000000 * tmp9); |
||
| 77 | c_im(output[ostride]) = tmp5 + tmp10; |
||
| 78 | c_im(output[2 * ostride]) = tmp10 - tmp5; |
||
| 79 | } |
||
| 80 | |||
| 81 | fftw_codelet_desc fftwi_no_twiddle_3_desc = |
||
| 82 | { |
||
| 83 | "fftwi_no_twiddle_3", |
||
| 84 | (void (*)()) fftwi_no_twiddle_3, |
||
| 85 | 3, |
||
| 86 | FFTW_BACKWARD, |
||
| 87 | FFTW_NOTW, |
||
| 88 | 78, |
||
| 89 | 0, |
||
| 90 | (const int *) 0, |
||
| 91 | }; |