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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 13:54:26 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 -notwiddle 2 */ |
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| 27 | |||
| 28 | /* |
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| 29 | * This function contains 4 FP additions, 0 FP multiplications, |
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| 30 | * (or, 4 additions, 0 multiplications, 0 fused multiply/add), |
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| 31 | * 4 stack variables, and 8 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: fn_2.c,v 1.1.1.1 2002-03-29 14:12:56 pj Exp $ |
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| 37 | * $Id: fn_2.c,v 1.1.1.1 2002-03-29 14:12:56 pj Exp $ |
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| 38 | * $Id: fn_2.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 fftw_no_twiddle_2(const fftw_complex *input, fftw_complex *output, int istride, int ostride) |
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| 42 | { |
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| 43 | fftw_real tmp1; |
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| 44 | fftw_real tmp2; |
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| 45 | fftw_real tmp3; |
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| 46 | fftw_real tmp4; |
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| 47 | ASSERT_ALIGNED_DOUBLE(); |
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| 48 | tmp1 = c_re(input[0]); |
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| 49 | tmp2 = c_re(input[istride]); |
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| 50 | c_re(output[ostride]) = tmp1 - tmp2; |
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| 51 | c_re(output[0]) = tmp1 + tmp2; |
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| 52 | tmp3 = c_im(input[0]); |
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| 53 | tmp4 = c_im(input[istride]); |
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| 54 | c_im(output[ostride]) = tmp3 - tmp4; |
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| 55 | c_im(output[0]) = tmp3 + tmp4; |
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| 56 | } |
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| 57 | |||
| 58 | fftw_codelet_desc fftw_no_twiddle_2_desc = |
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| 59 | { |
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| 60 | "fftw_no_twiddle_2", |
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| 61 | (void (*)()) fftw_no_twiddle_2, |
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| 62 | 2, |
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| 63 | FFTW_FORWARD, |
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| 64 | FFTW_NOTW, |
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| 65 | 45, |
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| 66 | 0, |
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| 67 | (const int *) 0, |
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| 68 | }; |